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Well.. I'd searched for this manual and although I found many copies online I was pleased to find your website with a well balanced pricing system and easy to search and follow links. That together with the very quick response time was just what I was looking for.. being a very impatient tech.. ;-) I had the service manual in front of me within a short time.
Bookmarked.. and you can bet I will always come here first for my service & user manuals..
best regards
Ed(Tony) Foley
G7WHK
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I will definitely be back for more information when I need it.
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The service manual when downloaded and printed out was clear and easy to read. I would have liked to have been able to enlarge some details, but this was not possible as the file permissions did not allow this. The service was very good. The time taken from placing my order to downloading the document was only a few minutes.
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The manual is useful for trouble shooting for an old instrument. It saved money,and let me enjoy DIY.
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Perfect source of information for replacing the HDD and performing general diagnostics.
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A Step 2-3: Input selection Step 2-5: SDA/SCL
CN1001 (Pin 5) Is the voltage "L" when selecting IN1? And is the voltage "H"(5V) when selecting IN2? Yes CN1001 (Pin 4) SELB SELA IC102 (Pin 7) No Diagnose the MAIN Assy. Does a signal output in constant period (0 to 5 V) ? Yes IC102 (Pin 9) SDA (HDMI OUT)
A
No Check the JA301 and IC102. If JA301 or IC102 is failure, replace JA301 or IC102.
SCL (HDMI OUT)
B
Is the voltage "H"(5V) when selecting IN1? And is the voltage "L" when selecting IN2? Yes
No Diagnose the MAIN Assy.
Does a clock output in constant period (0 to 5 V) ? Yes IC101 (Pin 39) Is there a same signal as IC102-pin 7 (0 to 3.3V) ? Yes IC101 (Pin 38)
No Check the JA301 and IC102. If JA301 or IC102 is failure, replace JA301 or IC102.
SDA_SINK
Step 2-4: Hot Plug Detect
CN1001 (Pin 7) HPD_IN
No Check the IC102 and IC101. If IC102 or IC101 is failure, replace IC102 or IC101.
C
Is the voltage "H" (5 V)? Yes CN1001 (Pin 6)
No Check the JA301. If JA301 is failure, replace JA301.
SCL_SINK
HPD_SINK
Is the voltage "H" (5 V)?
No Diagnose the MAIN Assy.
Is there a same No Check the IC102 and IC101. signal as IC102-pin 9 If IC102 or IC101 is failure, (0 to 3.3V) replace IC102 or IC101. ? Yes * When connected the source equipment to IN1;
D
IC101 (Pin 63) Yes * When connected the source equipment to IN1; JA101 (Pin 19) Is the voltage 5 V when selecting IN1? HPD0 Check the IC101 and JA101. If IC101 or JA101 is failure, replace IC101 or JA101.
SDA (HDMI IN1)
No
Is there a same No Check the IC101 and JA101. signal as IC102-pin 7 If IC101 or JA101 is failure, when selecting replace IC101 or JA101. IN1? (0 to 5 V) Yes IC101 (Pin 64) SCL (HDMI IN1)
Yes * When connected the source equipment to IN2; JA102 (Pin 19) Is the voltage 5 V when selecting IN2? Yes HPD1
No
Check the IC101 and JA102. If IC101 or JA102 is failure, replace IC101 or JA102.
Is there a same No Check the IC101 and JA101. signal as IC102-pin 9 If IC101 or JA101 is failure, when selecting replace IC101 or JA101. IN1? (0 to 5 V) Yes
E
B
F
VSX-918V-K
5 6 7 8
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