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There are currently no product reviews.
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Exactly what was needed to assess the product - excellent value and great service
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A site where discontinualed schematic diagrams and back dated information can be found on discontinued radios tv's and any electronic equipment can be found. Newer manuals either Service and operating manuals. Radio amateurs should find this site a great source for ham radio equipment manuals. I will return to this site should I need information on any electrical equipment. priced easy to download in a PDF format and print pages need to undertake the repair.
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Quality scan of the original. All the detail necessary to troubleshoot, repair and adjust the unit. I'm sure I will be downloading more manuals in the future as the need arises.
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Exactly as described, a Service Manual complete with the schematics and PCB layout delivered in a timely manner. Many thanks for the great service.
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some of the writing is a bit blur but the part in the schmatic was great and i have fixed the machine thanks
5
6
7
8
C
R452 C414 SY IN VCSDA
A
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
Is there a C signal? Yes No Diagnose between the BOARD TO BOARD Assy and S. VIDEO Assy. Is there a same signal as VCSCL (0 to 3.3 V)? Yes
d-2
No Check the Q451. If Q451 is failure, replace Q451.
B
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
Is the voltage "H" (5 V)? No Diagnose between the BOARD TO BOARD Assy and MAIN Assy. Is there a clock (27 MHz)? Yes IC701 (Pins 2 to 9) P8 to P15 No Check the parts and patterns in the path (IC401). If IC401 is failure, replace IC401.
C
X'tal
Yes
f
IC401 (Pin 22) Is there the CLK (28.63636MHz) ? Yes 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
D
Step 3-4: I2C
CN318 (Pin 4) VCSDA
g-1
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
Does a signal output in constant period (0 to 5 V) ? Yes CN318 (Pin 3) 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.
E
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
VSX-917V-K
5 6 7 8
115
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