Troubleshooting - JVC HR-XV45SEF Service Manual

5.1 ELECTRICAL TROUBLESHOOTING GUIDE (VCR PART)
5.1.1 Power(SMPS) CIRCUIT
(1) No 5.3VA
No 5.3VA
YES
Is the FR101
Normal?
YES
Is the BD101
Normal?
YES
Is the R101
Normal?
YES
Is Vcc (9V - 18V) sup-
plied to IC101 Pin2?
YES
Are the D125
normal?
Is there about 2.5V
at the IC103 Pin1?
YES
Is the D123
normal?
YES
Is the D124
Normal?
YES
Is the D121
Normal?
YES
Power Line of Main
PCB is short
SECTION 5

TROUBLESHOOTING

NO
Replace the FR101
(Use the same ICW)
NO
Replace the
BD101
NO
Replace the R101
NO
Is the D102
normal?
NO
Replace the R125
NO
Replace the IC103
NO
Replace the D123
NO
Replace the D124
NO
Replace the D121
Check or Replace
the D102
(No.YD070)1-37