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Simple and fast...
The diagrams are clear and legible; i have been a great help.
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Very easy site. Great service and quick release for download. Manuals are of good quality.
Joop - The Netherlands
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Very good manual, in depth and complete. Only criticism is that some of the circuit diagrams are slightly blurry and hard to follow for long periods of time, but this is to be expected. Perfect for any maintenance required. Also contains the wiring diagrams of the control cable for constructing extensions.
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Detailed SONY CFD980 Service Manual at an easy to find one stop shopping. Make my radio hobby technically interesting. Thanks.
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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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