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It's a good manual, this one it's a scan from the original factory service manual, great quality 100% readeable. definetely it worths what I paid for.
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A good manual! fast service and good qualityi for pdf document.
thanks!
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Very helpful and complete manual. Maybe only one negative is schematics have sometimes unreadable name of the parts. But it's not a big problem.
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Excellent high quality schematics brought my old Heidelberg back to life. Fast download at a reasonable price. Thanks.
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This document is just what I was looking for, it´s very useful, it contains adjustment procedures for the final stage of the power amp and also
has a complete wiring diagram and description of the main semiconductors used in the design.
1
2
3
4
Step 3: HDMI
A
Step 3-2: CLK, DATA
Step 3-3: Tx
U
IC101 (pins 1-3, 121) VIDEO No Check the soldering of IC101. If soldering has not been done correctly, replace IC101.
W
D381 (Cathode) HPD No Check the soldering of D381. If soldering has not been done correctly, replace D381.
Is there a clock ?
Is the voltage "H" (5 V)?
U
B
Yes
X
Yes DDC_TX No Check the soldering of IC301. If soldering has not been done correctly, replace IC301.
IC101 (pins D0-D23) No Check the soldering of IC101. If soldering has not been done correctly, replace IC101.
IC301 (pins 19, 20)
Is there a data ?
Is there a signal ?
U
Yes AUDIO (DVD) No Check the soldering of IC101. If soldering has not been done correctly, replace IC101.
Y
Yes
IC101 (pins 78, 88) Are there clock and data?
C
Q353 (pins 3, 6) Are signals the No Check the soldering of Q353. same as those at Pins 4 and 1 but whose voltage If soldering has not been done has been converted correctly, replace Q353. from 3V to 5V detected? Yes Yes
V
Yes IC201 (pin 11)
Z
Is there a data ? Yes Check the INTERFACE Assy and DIGITAL MOTHER Assy.
D
No
Check the soldering of IC201. If soldering has not been done correctly, replace IC201.
IC301 (pins 26, 27, 29, 30, 32, 33, 35, 36) TMDS_TX
Do signals (approx. 0.5 Vp-p) run in all the lines? Yes
No Check the soldering of IC301. If soldering has not been done correctly, replace IC301.
U
IC101 (pins 81-88) Are there clock and data? Yes AUDIO (DVD-AUDIO/Multi ch)
CN301
Is soldering of No Check the soldering of IC101. If soldering has not been done correctly, replace IC101. CN301 OK? Yes Replace CN301
No
Solder the CN301correctly.
V
E
IC201 (pins 12-18) Are there clock and data? Yes Check the INTERFACE Assy and DIGITAL MOTHER Assy. No Check the soldering of IC201. If soldering has not been done correctly, replace IC201.
F
214
1 2
VSX-74TXVi
3 4
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