Panasonic VDR-M70EG Service Manual page 51

Symptom
No power
Date/time is
incorrect
Auto-focus does
not operate.
No zoom works
even if zoom lever
is operated.
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Table 4-7-1 Trouble Diagnosis Table
Service
Check points
position
F0501 [MAN-B]
F0502 [MAN-B]
F0503 [MAN-B]
F0504 [MAN-B]
TL0504 [MAN-B]
IC1503- 53 to 56
[MAN-B] (Do not
solder lead wire)
TL0510 [MAN-A]
TL0511 [MAN-B]
TL0512 [MAN-A]
TL0513 [MAN-A]
TL0515 [MAN-A]
TL0517 [MAN-A]
TL0518 [MAN-B]
TL7041 [AEL-B]
----- -----
----- -----
TL1543 [MAN-B]
VDR-M70EG / VDR-M70EB / VDR-M70GC / VDR-M50EG / VDR-M50EB / VDR-M50GC
Detail of check
Is fuse blown?
Is the voltage approx. 3.2 V
DC (REG ON) when the
power switch is set to
"VIDEO" or "PHOTO" from
"POWER OFF"?
Can approx. 3 V DC (SYS3V)
be confirmed?
Can approx. 1.5 V DC
(C1.6V) be confirmed?
Can approx. 3.2 V DC
(CAM3V) be confirmed?
Can approx. 4.8 V DC
(CAM5V) be confirmed?
Can approx. 3 V DC (D3V)
be confirmed?
Can approx. 5 V DC (D5V)
be confirmed?
Can approx. 2.5 V DC
(D2.5V) be confirmed?
Can approx. 15 V DC (C15V)
be confirmed?
Can approx. 3 V DC (B/U3V)
be confirmed?
Even if manual focus is set
and +/- buttons are operated,
focus is not correct, and
when power is turned on
again, abnormal sound is
heard from the lens and it
takes more than 20 seconds
before an image appears.
No zoom is operated by the
remote control, and when
power is turned on again,
abnormal sound is heard
from the lens and it takes
more than 20 seconds before
an image appears.
Can change in voltage be
confirmed when lever is
operated (T/W)?
51
Troubleshooting due to
check results
Yes: Replace MAN-H/
MAN circuit board.
No: Replace MAN-H/
MAN circuit board.
Yes: Replace MAN-H/
MAN circuit board.
No: Replace BA1801.
Yes: Replace lens unit.
No: Replace MAN-H/
MAN circuit board.
Yes: Replace lens unit.
Yes: Replace MAN-H/
MAN circuit board.
No: Replace rear cover.