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Symptom
No power
No information appears on
screen after pressing DIS-
PLAY button: POWER switch
does not work.
No operating sound
No sound from speaker
No audio from audio output
jack
Microphone sound cannot be
recorded
Sound from external micro-
phone cannot be recorded
No sound can be recorded
Speaker sound volume
cannot be adjusted
Operation switches on side
case L do not work
Zoom switch does not work
EJECT switch does not work
*1: Solder lead wire, etc. to check point for measurement.
*2: Perform measurement with GYR circuit board removed.
E1 - 14
Check point
Detail of check
L0501
[ANA-A]
Continuity check
F0502
[ANA-B]
(*1)
L0509
[ANA-A]
L0504
[ANA-A]
TL0520
[ANA-B]
"Hi" when power turns on
(*1)
TL1523
[ANA-B]
Approx. 3V DC (SYS3V)
(*1)
L0502
[ANA-A]
Approx. 3V DC (CAM3V)
L0503
[ANA-A]
Approx. 5V DC (CAM5V)
L0505
[ANA-A]
Approx. 1.8V DC (CAM1.8V)
L0510
[ANA-A]
Approx. 3V DC (DRV3V)
L0511
[ANA-A]
Approx. 5V DC (DRV5V)
C0546
[ANA-A]
Approx. 15V DC
TL1501
[ANA-A]
Voltage varies when POWER
switch is turned on/off.
-----
Connections of switch unit.
Red and blue wires
Red and blue wires are "Hi".
of the MV100
connection jig.
-----
Connect jigs in the same way
as for adjustment, and start
adjustment program (only
startup is necessary, adjust-
ment is not necessary).
IC4001-2
[DIG-A]
Goes "Hi" momentarily when
power is turned on (SH-RST
pulse).
PG6301
[ANA-A]
Check connections.
(speaker connec-
tor)
TL6301
[ANA-A]
Audio signal
TL6302
[ANA-A]
TL1701
[ANA-A]
Audio signal
TL1702
[ANA-A]
PG6001
[JKR-A]
Check connections
TL6091
[JKR-B]
Audio signal
TL6092
[JKR-B]
Microphone jack
Connection of external
(JK6051)
[JKR-B]
microphone
-----
Sound is output from speaker.
-----
Volume indicator on screen
operates.
PG1503-4 [ANA-A]
Switch operation changes
PG1503-5 [ANA-A]
voltage.
TL1503
[ANA-A]
Switch operation changes
voltage.
TL1501
[ANA-A]
Troubleshooting due to check results
NG: F0501 (fuse) faulty. Replace ANA
circuit board.
NG: F0502 (fuse) faulty. Replace ANA
circuit board.
NG: F0503 (fuse) faulty. Replace ANA
circuit board.
NG: F0504 (fuse) faulty. Replace ANA
circuit board.
NG: IC1501 faulty. Replace ANA circuit
board.
NG: IC1503 faulty. Replace ANA circuit
board.
NG: IC0501 or its peripheral circuits
faulty. Replace ANA circuit board.
NG: Check connections of switch unit.
OK: IC1501 or peripheral circuits faulty.
Replace ANA circuit board.
OK: Replace switch unit
NG: IC4001 faulty. Replace DIG circuit
board.
NG: IC4002 faulty. Replace DIG circuit
board.
NG: IC1501 faulty. Replace ANA circuit
board.
OK: IC4001 faulty. Replace DIG circuit
board.
NG: Connector connections faulty.
OK: Replace side case L (speaker).
NG: IC6301 or its peripheral circuits
faulty. Replace ANA circuit board.
NG: IC6103 or its peripheral circuits
faulty. Replace ANA circuit board.
OK: Check parts on JKR circuit board.
NG: Connector connections faulty.
OK: Replace microphone.
NG: Check IC6001, IC6091 and their
peripheral circuits.
OK: Replace ANA circuit board.
NG: External microphone connection
faulty. JK6051 contact faulty.
OK: Check Q6051 R/L and their
peripheral circuits.
NG: IC6301 faulty. Replace ANA circuit
board.
OK: IC5001 faulty. Replace DIG circuit
board.
NG: Replace switch unit.
OK: IC6301 faulty. Replace ANA circuit
board.
NG: Replace side case-L.
OK: CAM3V line or IC1501 faulty.
Replace ANA circuit board.
NG: Replace switch unit.
OK: IC1501 or its peripheral circuits
faulty. Replace ANA circuit board.
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