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The purchased manual is an high quality scan of the original Philips paper-based Service Manual. I am very satisfied!
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The purchased manual is an scan of the original Panasonic paper-based Service Manual. Unfortunately the contrast is not perfect, but I am satisfied anyway!
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The purchased manual is an high-quality scan of the original JVC paper-based Service Manual. The Service Manual includes the Owner´s Manual, so you do not have to buy both of them.
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It paid to find this Service Manual, couldn't find it anywhere else. Exactly what I wanted. Received within 24 hours.
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Complete manual with clear schematic diagrams and printed circuit board layouts of two variants of the headset and the transmitter an old and a new version.
Also shows how the headset and the transmitter is opened and how transmitter and receivers can be adjusted and where to measure.
I had no problems to repair the headset using this service manual.
1
2
3
4
C
A
R452 C414 SY IN
VCSDA
b-2
Is there a Y signal? Yes C420 SC IN No Diagnose between the BOARD TO BOARD Assy and S. VIDEO Assy.
d-1
Is there a same signal as VCSDA (0 to 3.3 V)? Yes R454 VCSCL No Check the Q451. If Q451 is failure, replace Q451.
b-3
B
d-2
Is there a same signal as VCSCL (0 to 3.3 V)? Yes No Check the Q451. If Q451 is failure, replace Q451.
Is there a C signal? Yes
No
Diagnose between the BOARD TO BOARD Assy and S. VIDEO Assy.
Note: Check is unnecessary because component input does not convert it.
Step 3-5: VIDEO CLK, DATA
IC701 (Pin 48) LLC1
Step 3-3: Reset
CN318 (Pin 2) XVCRST
e A
C
Is there a clock (27 MHz)? Yes IC701 (Pins 2 to 9)
No Check the parts and patterns in the path (IC401). If IC401 is failure, replace IC401.
Is the voltage "H" (5 V)?
No Diagnose between the BOARD TO BOARD Assy and MAIN Assy.
P8 to P15
X'tal
Yes
f
IC401 (Pin 22) Is there the CLK (28.63636MHz) ? Yes
D
XTAL
c
No Check the X401 or IC402. If X401 or IC402 is failure, replace X401 or IC402.
Is there a data?
No Check the parts and patterns in the path. If IC401 is failure, replace IC401.
Yes
Step 3-6: Video Output
IC701 (Pin 35) DACA
Step 3-4: I2C
CN318 (Pin 4) Does a signal output in constant period (0 to 5 V) ? Yes
E
g-1
VCSDA Is there a composite signal? Yes CN316 (Pin 21) No Check the parts and patterns in the path. If IC701 or R731 or R732 or Q731 is failure, replace it. CVBS OUT
A
No Diagnose between the BOARD TO BOARD Assy and MAIN Assy.
a
VCSCL Is there a composite signal? Yes IC701 (Pin 33) DACB No Check the parts and patterns in the path. If Q731 or R733 is failure, replace Q731 or R733. No Diagnose between the BOARD TO BOARD Assy and MAIN Assy.
CN318 (Pin 3)
A
Does a clock output in constant period (0 to 5 V) ? Yes
g-2
Is there a Y signal? Yes No Check the parts and patterns in the path. If IC701 or R741 or R742 or Q741 is failure, replace it.
F
D
112
1 2
VSX-917V-K
3 4
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