12.1. Distinguish the problem
How to distinguish the trouble
1. View mechanical part if visual damage occurred.
Confirm the movement of mechanical parts assembly (tray ass’y, loading mechanism ass’y, etc.).
2. Diagnose if Optical Pickup Unit is faulty (refer to diagnosis of Optical Pickup Unit).
3. If mechanism and OPU are OK, it is P.C.B.
12.1.1. Troubleshooting Guide Part 1
Checking Points
Possible Faults
Possible Reasons
Countermeasure
AC Inlet Circuit
1. Failure to power-up
the main unit.
2. Power On switch
·
Wrong
selection
of
AC
power to main unit.
·
AC inlet JK500 is faulty.
·
AC
Line
filter
L500
is
faulty.
·
Power On switch broken.
·
Replace of fuse if found faulty.
·
Replace of AC Inlet if found faulty or damaged.
·
Replace AC Line filter is found faulty or damaged.
·
Replace Power On button switch if necessary.
·
If conditions as mentioned above is in good condition.
Check for wire connection. (W1/W2). If connection is
good, please proceed to check for Transformer Circuit.
3.
Intermittent
Power
supply to main unit.
·
Check for connection.
·
If condition 1 to 4 as mentioned above is in good
condition. Check for wire connection. (W1/W2). If
connection is good, please proceed to check for
Transformer Circuit
17
SA-VK81DEE
Summary of Contents for SA-VK81DEE
Page 8: ...8 Accessories Remote control AC cord FM antenna AM antenna Video cable 8 SA VK81DEE ...
Page 9: ...9 Operation Procedures 9 SA VK81DEE ...
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Page 11: ...10 Disc information 11 SA VK81DEE ...
Page 12: ...12 SA VK81DEE ...
Page 16: ...12 Procedure for repairing the set 16 SA VK81DEE ...
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Page 68: ...18 3 1 Cassette Deck Section 18 3 2 Adjustment Point 18 3 Alignment Points 68 SA VK81DEE ...
Page 128: ...25 1 Deck Mechanism RAA3412 S 25 1 1 Deck Mechanism Parts Location 128 SA VK81DEE ...
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Page 131: ...25 2 DVD Loading Mechanism 25 2 1 DVD Loading Mechanism Parts Location 131 SA VK81DEE ...
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Page 135: ...25 3 Cabinet 25 3 1 Cabinet Parts Location 135 SA VK81DEE ...
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