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tres bon document
cela a permis de verifier la connection de l'ecran
merci
salutations
;
The manual was of good quality with high resolution schematic diagrams.
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The manual was very clear and contained all the information I was looking for. My dishwasher is working again because of this servicemanual!
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Quality scan, great manual. I solved my problem with this manual.
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The AKAI 1720 model reel to reel tape recorder described in this Manual is quite an old unit - circa late 1960's. As a consequence, the description of the mechanical details - and adjustments thereof - is quite critical. The manual does this quite well. The schematics are also well presented and have detailed PCB overlays. Probably the only negative is that some half-tone detail has been lost from the original manual as it has been scanned in simple B&W.
5 Troubleshooting
5-2 No Video [Analog]
Check signal cable and connection. Does the digital video signal appear at the Pin 26,27,28,29,31,32,33,34,36,37,38,39, 41,42,44,45,46,47,49, and 50 of IC302? Yes The output of Pin 1 and 19 of IC500 is High? No Check IC500 and related circuit. No Does the input signal appear at Pin of 11, 22, 64, 65, and 66 of IC302?(DCLK, LVDS-EN, DHS, DVS, DEN)
2 3 4 5 6
1
Yes
Check TFT-LCD panel and Inverter.
Yes Replace IC302.
No Does the analog video signal appear at R126,R127 and R128? (RED, GREEN, BLUE) Yes Does the Sync. signal appear at the output of Pin 30 and 31 of IC 500 ? (MCU_VSYNC, MCU_HSYNC)
7 8
No
Check PC Signal.
No Check IC101 and related circuit.
Yes Does the input signal appear at the Pin 40 and 41 of IC 201? 9 10 (PLL H*V, COAST) Yes During power on-off, does the input signal appear at the Pin29 and 30 of IC201? (AD-SDA_B, AD-SCL_B) Yes Do the clock and Sync. signal appear at Pin115 and 117 of IC 201 (ACLK 11 , AHS_Z4 12 ) and does the digital video signal appear at the output port RA200~RA211? Yes During power on-off dose the input signal appear at the R546 and R547? (Z4_SDA_A, Z4_SCL_A) No Check IC500 and related circuit. No Check IC201 and related circuit. No Check IC500 and related circuit. No Check the related circuit for these ports.
5-2
CN17A*/B* CN18A*
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