T-View 100 » History » Version 26
laforge, 11/10/2022 03:51 PM
1 | 1 | manawyrm | h1. T-View 100 |
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2 | |||
3 | 21 | laforge | {{>toc}} |
4 | |||
5 | 3 | manawyrm | T-View 100 was a video telephone, made by Deutsche Telekom / Siemens. |
6 | 1 | manawyrm | |
7 | 20 | manawyrm | @manawyrm has two of these phones, @LaForge owns two as well. |
8 | 6 | manawyrm | |
9 | 5 | manawyrm | h2. External photos |
10 | 9 | manawyrm | !{width:40%}DSC00422.jpg! !{width:40%}DSC00423.jpg! |
11 | 5 | manawyrm | |
12 | Power supply is called STN20, output DC 22.5V; 0.9A. Center positive, 5.5/2.5mm barrel jack. |
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13 | The RCA connectors are (from left to right): Audio out, Video out, Video in, Audio in |
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14 | 10 | manawyrm | |
15 | h3. Mini-DIN / RS232 |
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16 | |||
17 | 19 | manawyrm | The Mini-DIN (8pin) connector carries a RS232 serial. It was used to connect to auxiliary devices like relay control boxes (to alert deaf people of calls), VCRs (remote control) and PCs (for firmware updates). |
18 | 13 | manawyrm | We have a copy of the 1.2 firmware update and the RS232 communication protocol. |
19 | 10 | manawyrm | |
20 | RS232 pinout is given _without_ Null-Modem reversal (aka it's meant to be a male connector), reverse RXD/TXD and RTS/CTS for a female connector. |
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21 | 12 | manawyrm | Serial settings (for debug output) seems to be 19200, 8n2. |
22 | 10 | manawyrm | |_.Mini-DIN|_.RS232|_.RS232 Pin| |
23 | | 1 | NC | - | |
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24 | | 2 | TXD | 3 | |
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25 | | 3 | RXD | 2 | |
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26 | | 4 | RTS | 7 | |
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27 | | 5 | CTS | 8 | |
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28 | | 6 | NC | - | |
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29 | | 7 | GND | 5 | |
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30 | | 8 | NC | - | |
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31 | 5 | manawyrm | |
32 | 18 | laforge | The framing and at least some commands are described in attachment:V24-Control.pdf |
33 | |||
34 | 14 | manawyrm | h3. Service menu |
35 | 15 | manawyrm | |
36 | 14 | manawyrm | There is a hidden service menu. Scroll to "Service", press OK, type the number 7. |
37 | Enter passcode "3570" and press OK. |
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38 | |||
39 | 23 | manawyrm | "Service" -> 8 is another hidden option for a "Factory SETUP". The passcode is 3745. |
40 | |||
41 | 5 | manawyrm | h2. Internal photos |
42 | 3 | manawyrm | |
43 | Video/Interfacing PCB: |
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44 | !{width:40%}IMG_3633.JPG! |
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45 | |||
46 | Telephone PCB: |
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47 | !{width:40%}IMG_3644.JPG! |
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48 | |||
49 | Display/Camera PCB: |
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50 | !{width:40%}IMG_3656.JPG! |
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51 | |||
52 | h2. Phone disassembly |
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53 | 1 | manawyrm | |
54 | 6 | manawyrm | The bottom cover plate has 6 Phillips screws and is clipped together at the bottom. Use multiple guitar picks to get them free. |
55 | 2 | manawyrm | The plastic does not seem to be brittle (yet), some force is OK. |
56 | |||
57 | 1 | manawyrm | !{width:40%}IMG_3647.JPG! |
58 | |||
59 | Backside of the main video / interfacing PCB is visible under the cover plate: |
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60 | !{width:40%}IMG_3631.JPG! |
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61 | |||
62 | 3 | manawyrm | Lift the video / interfacing PCB out by pulling it straight up, it's connected via a rigid interface PCB (but not screwed down): |
63 | 1 | manawyrm | !{width:40%}IMG_3634.JPG! |
64 | 3 | manawyrm | |
65 | 6 | manawyrm | Unscrew the 7 Phillips screws attaching the plastic shield. Be careful with the speaker wires on the right, they are not detachable! |
66 | 3 | manawyrm | Lift the plastic shield out of the way to the right. When re-assembling, make sure the hook-mechanism and speaker are correctly in-place. |
67 | !{width:40%}IMG_3642.JPG! |
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68 | 4 | manawyrm | |
69 | h2. Display/camera disassembly |
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70 | |||
71 | Disassembling the display/camera unit is a bit tricky. You'll need a 10mm socket (and possibly socket extension)! |
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72 | |||
73 | Start by removing the 4 screws on the connector: |
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74 | !{width:40%}IMG_3650.JPG! |
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75 | |||
76 | then remove the 3 screws in the top of the unit. |
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77 | The sides of the display/camera unit are covered with round covers. They can be pulled out with a bit of force. |
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78 | !{width:40%}IMG_3652.JPG! |
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79 | |||
80 | 1 | manawyrm | Use a 10mm socket to unscrew the nuts on both sides. |
81 | Lift the connector cover. This is tricky! Please fill in a good way to do this. The author broke 2 plastic clips by doing it: |
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82 | !{width:40%}IMG_3653.JPG! |
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83 | |||
84 | Remove both bolts (and the washers). The swivel piece can now be bent inwards slightly with a bit of force to get it out. |
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85 | !{width:40%}IMG_3654.JPG! |
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86 | Unscrew the 2 remaining screws holding the display unit together. |
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87 | |||
88 | 24 | laforge | There are clips all around the display/camera unit. Use guitar picks again and open the display. |
89 | 7 | manawyrm | |
90 | h2. Common faults |
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91 | |||
92 | 25 | laforge | h3. Faulty display hotbar |
93 | |||
94 | 7 | manawyrm | Symptoms: Missing (pixel) rows / columns on the (24x2) character LCD. |
95 | Fix: Try and reheat the hotbar (~180°C) with a clean soldering iron tip and a lot of pressure |
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96 | |||
97 | Symptoms: Garbled characters/stuck bit |
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98 | Fix: HD44780 interface is connected via Hotbar as well. |
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99 | 1 | manawyrm | Find out which bits (D0-D7) are affected and solder wires for those bits directly to the LCD |
100 | 24 | laforge | |
101 | {{thumbnail(IMG_3779.JPG)}} |
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102 | 1 | manawyrm | {{thumbnail(Bildschirmfoto 2022-03-11 um 13.07.27.png)}} |
103 | |||
104 | 25 | laforge | h3. Faulty display |
105 | |||
106 | 1 | manawyrm | Symptoms: No LCD output at all |
107 | Fix: Buy a new LCD. You'll need one with HD44780 ROM code A00 charset (the Japanese/Kana charset). The 0xE1 character should be "ä" (a with Umlauts). |
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108 | |||
109 | 25 | laforge | We couldn't find any mechanically 100% compatible model, but the NewHaven NHD-0224AZ-FSW-GBW is electrically and character set compatible. If you want to do the re-work, the following recommendations apply: |
110 | * remove the transparent plastic carrier for the old LCD module |
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111 | * remove the old LCD module (just tear the flex cable from the top side of the board) |
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112 | * use solder wires to connect the new LCD to vias on the PCB (see picture) |
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113 | * either fix the contrast voltage to GND, or re-work the existing contrast voltage biasing circuit. The original Siemens circuit consists of a 5V PWM feeding into a resistive divider of two 24kOhms resistors. Replace the GND-facing resistor with a 2.2kOms (or even lower). Play with the contrast settings (+/- buttons while receiver is on-hook) to see if you hit the right voltage range. Adjust resistive divider as needed. |
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114 | * re-work the plastic cover that is located between the two boards as needed. You can either make more space for the LCD module by creatng a cut-out, or you can use it as-is and adjust the spacers on the "video" side. |
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115 | |||
116 | {{thumbnail(tview-nhd-rework.jpg)}} |
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117 | |||
118 | h3. Faulty capacitors |
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119 | |||
120 | 7 | manawyrm | Symptoms: Crashing, low display contrast, flickering LEDs, poor video quality, mains hum on the speakers |
121 | Fix: Replace all electrolytic capacitors |
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122 | 8 | manawyrm | |
123 | 7 | manawyrm | Remove the old caps using the "Twist method":https://www.youtube.com/watch?v=-1S3F6_g3Sw |
124 | |||
125 | |_.Capacity|_.Voltage|_.Count|_.Width x Height (mm)|_.Replacement part| |
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126 | |220µF|35V|8|10.31x10.31|Nichicon UCL1V221MCL6GS| |
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127 | |470µF|16V|2|10.31x10.31|Nichicon UCX1C471MCL1GS| |
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128 | |47µF|35V|6|8.28x8.28|Nichicon UUE1V470MNS1GS| |
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129 | |220µF|10V|1|8.28x8.28|Nichicon UWG1A221MNL1GS| |
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130 | 8 | manawyrm | |47µF|16V|3|6.60x6.60|Nichicon UCB1C470MCL1GS| |
131 | 1 | manawyrm | |100µF|10V|1|6.60x6.60|Nichicon UUT1A101MCL1GS| |
132 | |2.2µF|35V|2|3.33x3.33|Nichicon UWJ1H2R2MCL1GB| |
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133 | 8 | manawyrm | |10µF|16V|1|3.33x3.33|Nichicon UUT1C100MCL1GS| |
134 | |||
135 | 25 | laforge | h3. Bad connections |
136 | |||
137 | 7 | manawyrm | Symptoms: Phone working, no picture, no backlight |
138 | Fix: Replug the display assembly a couple of times |
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139 | 1 | manawyrm | |
140 | 11 | manawyrm | |
141 | h2. Bootlog (RS232 Debug) |
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142 | |||
143 | <pre> |
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144 | LOut: Header: 1000101, Function: 2a P1: 00000000 P2: 00000000 P3: 00000000 |
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145 | 7In : Header: 1000101, Function: 2a P1: 0 P2: 0 P3: 0 |
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146 | 'Process BC - version 0.16 - 26/08/98 |
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147 | VCP ALERT : 0xff, 0x0 |
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148 | Send SRAM_NOT_OK to Bruno |
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149 | VC_uv_Test_conf |
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150 | -VC Process: Version 26.08.1998 for TST4025 |
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151 | VCP ALERT : 0x0, 0x0 |
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152 | Send SRAM_OK to Bruno |
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153 | VC_uv_Test_conf |
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154 | TM process initialized |
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155 | 20 |
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156 | VCP ALERT : 0x3, 0x13 |
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157 | VCP ALERT : 0x3, 0x12 |
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158 | VCP ALERT : 0x4, 0x1 |
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159 | VC_vb_h221_running_noty |
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160 | VCP ALERT : 0x3, 0x2 |
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161 | DIn : Header: 2000100, Function: 7 P1: 5000000 P2: 11 P3: da323200 |
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162 | KOut: Header: 1010200, Function: 2 P1: 04fff800 P2: 00000000 P3: 00000000 |
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163 | GIn : Header: 2000100, Function: 3 P1: fff80000 P2: 4025 P3: f8000000 |
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164 | LOut: Header: 1010900, Function: ac P1: 00004025 P2: 00100022 P3: 00000000 |
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165 | $FT$:onhook audio$ |
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166 | $FT$:onhook audio$ |
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167 | LIn : Header: 9010101, Function: a4 P1: 40465424 P2: 3a6f6e68 P3: 6f6f6b00 |
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168 | KOut: Header: 1010200, Function: 0 P1: 04000036 P2: 04000000 P3: ff000000 |
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169 | KOut: Header: 1010200, Function: 0 P1: 04000036 P2: 08000000 P3: ff000000 |
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170 | KOut: Header: 1010200, Function: 0 P1: 0400000f P2: 0c000000 P3: 00000000 |
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171 | KOut: Header: 1010200, Function: 0 P1: 0400000a P2: bc000000 P3: 00000000 |
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172 | KOut: Header: 1010200, Function: 0 P1: 0400000a P2: 98000000 P3: 05000000 |
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173 | KOut: Header: 1010200, Function: 0 P1: 0400000a P2: 90000000 P3: 00000000 |
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174 | KOut: Header: 1010200, Function: 0 P1: 0400000f P2: 08000000 P3: 00000000 |
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175 | %Out: Header: 1010200, Function: 1 |
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176 | JIn : Header: 9010101, Function: a6 P1: c04124 P2: 3a6f6e68 P3: 6f6f6b00 |
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177 | KOut: Header: 1010200, Function: c P1: 0000000f P2: 08000000 P3: 00000000 |
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178 | LIn : Header: 9010101, Function: a1 P1: ff014124 P2: 3a6f6e68 P3: 6f6f6b00 |
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179 | KOut: Header: 1010200, Function: 0 P1: 04000036 P2: 08000000 P3: ff000000 |
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180 | KOut: Header: 1010200, Function: 0 P1: 04000036 P2: 0c000000 P3: 10000000 |
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181 | KOut: Header: 1010200, Function: 0 P1: 04000036 P2: 18000000 P3: 0b000000 |
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182 | KOut: Header: 1010200, Function: 0 P1: 04000036 P2: 20000000 P3: 08000000 |
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183 | KOut: Header: 1010200, Function: 0 P1: 04000036 P2: 14000000 P3: 0d000000 |
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184 | LIn : Header: 9010101, Function: a7 P1: ff014124 P2: 3a6f6e68 P3: 6f6f6b00 |
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185 | KOut: Header: 1010200, Function: d P1 |
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186 | VC_v |
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187 | $FT$:User Interface Ready$ |
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188 | $FT$:onhook audio$ |
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189 | $FT$:offhook audio$ |
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190 | $FT$:onhook audio$ |
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191 | $FT$:onhook audio$ |
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192 | $FT$:onhook audio$ |
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193 | $FT$:alerting video$ |
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194 | IIn : Header: 9010101, Function: a6 P1: 15424 P2: 3a616c65 P3: 72746900 |
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195 | KOut: Header: 1010200, Function: c P1: 00000036 P2: 14000000 P3: 0d000000 |
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196 | $FT$:pin authorized$ |
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197 | CIn : Header: 9010101, Function: a3 P1: 30026 P2: 700000 P3: 8200 |
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198 | %Out: Header: 1010200, Function: 1 |
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199 | $FT$:offhook video$ |
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200 | LIn : Header: 7020100, Function: 23 P1: 40015424 P2: 3a6f6666 P3: 686f6f00 |
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201 | %Out: Header: 1010200, Function: 1 |
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202 | %Out: Header: 1010200, Function: 1 |
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203 | KOut: Header: 1010200, Function: 0 P1: 0400004b P2: 5c000000 P3: 01000000 |
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204 | LOut: Header: 1010101, Function: e0 P1: 00000001 P2: 00002904 P3: 00000000 |
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205 | KOut: Header: 1010200, Function: 0 P1: 0400001a P2: 60000000 P3: 00000000 |
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206 | LOut: Header: 1010101, Function: e2 P1: 00000001 P2: 00007530 P3: 00000000 |
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207 | VCP ALERT : 0x4, 0x3 |
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208 | VC_vb_h221_frame_found_noty |
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209 | DIn : Header: 2000100, Function: 9 P1: 5000000 P2: 11 P3: da323200 |
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210 | KOut: Header: 1010200, Function: 0 P1: 0400006e P2: d4800000 P3: 00000000 |
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211 | KOut: Header: 1010200, Function: 0 P1: 0400006e P2: a8000000 P3: 00000000 |
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212 | %Out: Header: 1010200, Function: 4 |
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213 | VC_bv_getarray_req |
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214 | Address: 0x4b24 |
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215 | AIn : Header: 2000100, Function: 5 P1: 20000 P2: 4b240000 P3: b |
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216 | VCP ALERT : 0x5, 0x1 |
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217 | VC_vb_h242_caps_rcvd_noty |
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218 | DIn : Header: 2000100, Function: a P1: 5000000 P2: 11 P3: da32340b |
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219 | %Out: Header: 1010200, Function: 4 |
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220 | VC_bv_getarray_req |
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221 | Address: 0x544c |
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222 | Caps read: 30026 |
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223 | Caps read: 80700000 |
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224 | Caps read: 0 |
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225 | EIn : Header: 2000100, Function: 5 P1: 30000 P2: 544c0004 P3: 30026 |
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226 | VCP ALERT : 0x5, 0xc |
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227 | VCP ALERT : 0x5, 0x1 |
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228 | VC_vb_h242_caps_rcvd_noty |
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229 | DIn : Header: 2000100, Function: a P1: 5000000 P2: 11 P3: da323426 |
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230 | %Out: Header: 1010200, Function: 4 |
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231 | VC_bv_getarray_req |
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232 | Address: 0x544c |
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233 | Caps read: 30026 |
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234 | Caps read: 80700000 |
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235 | Caps read: 8280 |
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236 | EIn : Header: 2000100, Function: 5 P1: 30000 P2: 544c0004 P3: 30026 |
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237 | VCP ALERT : 0x5, 0x2 |
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238 | VC_vb_h242_caps_end_seqa_noty |
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239 | DIn : Header: 2000100, Function: b P1: 5000000 P2: 11 P3: da323426 |
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240 | %Out: Header: 1010200, Function: 4 |
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241 | VC_bv_getarray_req |
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242 | Address: 0x54b0 |
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243 | Caps read: 30026 |
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244 | Caps read: 80700000 |
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245 | Caps read: 8280 |
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246 | EIn : Header: 2000100, Function: 5 P1: 30000 P2: 54b00004 P3: 30026 |
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247 | LOut: Header: 1010900, Function: ab P1: 00030026 P2: 80700000 P3: 00008280 |
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248 | LOut: Header: 1010900, Function: ab P1: 00030026 P2: 80700000 P3: 00008280 |
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249 | KIn : Header: 9010101, Function: a2 P1: 1015424 P2: 3a6f6666 P3: 686f6f26 |
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250 | %Out: Header: 1010200, Function: 4 |
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251 | %Out: Header: 1010200, Function: 4 |
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252 | KOut: Header: 1010200, Function: 2 P1: 0400001b P2: 5c700000 P3: 00008280 |
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253 | KOut: Header: 1010200, Function: 2 P1: 0400001b P2: 68700000 P3: 00008280 |
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254 | KIn : Header: 9010101, Function: a2 P1: 1015424 P2: 3a6f6666 P3: 686f6f26 |
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255 | %Out: Header: 1010200, Function: 4 |
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256 | Send C_NOWAIT not ok |
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257 | %Out: Header: 1010200, Function: 4 |
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258 | KOut: Header |
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259 | VC_bv_ge |
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260 | HIn : |
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261 | HIn |
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262 | 9In : Hea |
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263 | LIn : Header: 7020100, Function: 23 P1: 40025424 P2: 3a6f6666 P3: 686f6f00 |
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264 | %Out: Header: 1010200, Function: 1 |
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265 | %Out: Header: 1010200, Function: 1 |
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266 | KOut: Header: 1010200, Function: 0 P1: 0400004b P2: 5c000000 P3: 01008280 |
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267 | %Out: Header: 1010200, Function: 4 |
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268 | LOut: Header: 1010101, Function: e0 P1: 00000002 P2: 00002710 P3: 00000000 |
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269 | VC_bv_getarray_req |
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270 | VCP ALERT : 0x4, 0x3 |
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271 | VC_vb_h221_frame_found_noty |
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272 | DIn : Header: 2000100, Function: 9 P1: 5000000 P2: 11 P3: da32320b |
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273 | %Out: Header: 1010200, Function: 4 |
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274 | %Out: Header: 1010200, Function: 4 |
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275 | KOut: Header: 1010200, Function: 2 P1: 0400001b P2: 5c000000 P3: 01008280 |
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276 | KOut: Header: 1010200, Function: 2 P1: 0400001b P2: 68000000 P3: 01008280 |
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277 | VC_bv_getarray_req |
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278 | Address: 0x544c |
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279 | Caps read: 20000000 |
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280 | Caps read: 1 |
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281 | Caps read: 10200084 |
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282 | VC_bv_getarray_req |
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283 | Address: 0x53e8 |
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284 | Caps read: 20000000 |
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285 | Caps read: 1 |
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286 | Caps read: 10200084 |
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287 | HIn : Header: 2000100, Function: 5 P1: 30000 P2: 544c0000 P3: 20000000 |
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288 | HIn : Header: 2 |
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289 | VCP ALERT : 0x3, 0x1 |
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290 | VCP ALERT : 0x3, 0xa |
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291 | VCP ALERT : 0x3, 0x14 |
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292 | :In : Header: 1010101, Function: e2 P1: 1 P2: 7530 P3: 0 |
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293 | KOut: Header: 1010200, Function: 0 P1: 0400001a P2: 60000000 P3: 01008280 |
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294 | $FT$:onhook video$ |
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295 | LIn : Header: 7020100, Function: 22 P1: 24465424 P2: 3a6f6e68 P3: 6f6f6b00 |
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296 | KOut: Header: 1010200, Function: 0 P1: 0400000a P2: 84000000 P3: 01008280 |
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297 | LOut: Header: 1010101, Function: e1 P1: 00000001 P2: 00000708 P3: 00000000 |
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298 | KOut: Header: 1010200, Function: 2 P1: 0400000a P2: 84000000 P3: 01008280 |
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299 | 8In : Header: 2000100, Function: 3 P1: a84 P2: 1 P3: 0 |
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300 | KOut: Header: 1010200, Function: 2 P1: 0400000a P2: 84000000 P3: 01008280 |
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301 | 8In : Header: 2000100, Function: 3 P1: a84 P2: 1 P3: 0 |
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302 | KOut: Header: 1010200, Function: 2 P1: 0400000a P2: 84000000 P3: 01008280 |
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303 | 8In : Header: 2000100, Function: 3 P1: a84 P2: 1 P3: 0 |
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304 | KOut: Header: 1010200, Function: 2 P1: 0400000a P2: 84000000 P3: 01008280 |
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305 | 8In : Header: 2000100, Function: 3 P1: a84 P2: 1 P3: 0 |
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306 | KOut: Header: 1010200, Function: 2 P1: 0400000a P2: 84000000 P3: 01008280 |
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307 | 8In : Header: 2000100, Function: 3 P1: a84 P2: 1 P3: 0 |
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308 | KOut: Header: 1010200, Function: 2 P1: 0400000a P2: 84000000 P3: 01008280 |
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309 | 8In : Header: 2000100, Function: 3 |
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310 | 8In |
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311 | 8In : |
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312 | 8In : |
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313 | 8In |
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314 | 8In : |
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315 | 8In |
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316 | 8In : |
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317 | 8In |
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318 | 8In : |
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319 | VCP ALERT : 0x5, 0x1 |
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320 | VC_vb_h242_caps_rcvd_noty |
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321 | DIn : Header: 2000100, Function: a P1: 5000000 P2: 11 P3: da323400 |
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322 | VCP ALERT : 0x5, 0x2 |
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323 | VC_vb_h242_caps_end_seqa_noty |
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324 | DIn : Header: 2000100, Function: b P1: 5000000 P2: 11 P3: da323400 |
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325 | %Out: Header: 1010200, Function: 1 |
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326 | %Out: Header: 1010200, Function: 1 |
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327 | %Out: Header: 1010200, Function: 1 |
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328 | %Out: Header: 1010200, Function: 1 |
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329 | KOut: Header: 1010200, Function: 0 P1: 0400004b P2: 5c000000 P3: 01008280 |
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330 | LOut: Header: 1010702, Function: 26 P1: 0400004b P2: 5c000000 P3: 01008280 |
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331 | KOut: Header: 1010200, Function: 0 P1: 0400000a P2: 840000 |
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332 | KOut: Header: |
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333 | VCP |
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334 | VCP ALERT : 0x3, 0x2 |
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335 | $FT$:onhook audio$ |
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336 | </pre> |
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337 | 21 | laforge | |
338 | h2. External Camera |
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339 | |||
340 | 22 | laforge | There was an official external camera accessory , a Deutsche Telekom 663701-001 (re-branded Minolta EDUKCM-100) |
341 | 21 | laforge | |
342 | * "FCC report":https://fcc.report/FCC-ID/EDUKCM-100 |
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343 | 26 | laforge | |
344 | h2. Firmware |
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345 | |||
346 | There are four known firmware versions: |
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347 | * V1.0 (July 1998) |
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348 | * V1.1 (?) |
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349 | * V1.2 (December 1998) |
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350 | * V1.3 (?) |
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351 | |||
352 | The firmware consists actually of different images for different processors on the unit. |
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353 | |||
354 | |_.Filename|_.Format|_.Purpose| |
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355 | |vcvcp.bin|binary|presumably for the video codec/processor| |
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356 | |vsetrel.abs|srec|for the VSet (telephone) board, derived from ProfiTEl70| |
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357 | |vcodrel.abs|srec|contains strings related to H.261, H.221 and VCP| |
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358 | |||
359 | The Firmware update utility running on the PC side is called Fload68k.exe "M68k Flash-Loader V 3.31 (C) 1997 Orsys GmbH" and it talks about three parts: |
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360 | * "Talkset" (abs format, programmed via SPI or "RS232 direct") |
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361 | * "VCODEC" (abs format, programmed via via "RS232 direct") |
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362 | * "VCP" (bin format, separate programming mode "VCP") |