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There are currently no product reviews.
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Happy to find finally a schematic for this amplifier. The schematic is of good quality, the pcb layout is useless: all is black. Never the less, it is very easy to find the components on the board using the schematics.
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Hard to find manual was ready the next day. Scans were very legible (including schematics). All the essential parts of the service manual were present (adjustment procedure, schematics, and parts list). It would have been nice if the rest of the manual was included (disassembly procedure, theory of operation, etc.).
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The Service Manual for the Kenwood KR-V55R provided by owner-manuals.com was as described/advertised. The contents provided the necessary information to effect a diagnosis of the unit. The schematics above all else was instrumental in tracing the the signal flow from component to component.
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This manual was the factory original. Excellent value and contained all the details I needed. Easy dowwnload provided the information when I needed it.
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Impeccable, document très complet. Perfect, i get all i need. All schematic are correct. Thanks
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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
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VSX-74TXVi
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