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1-11-1

E9B30TR

The power cannot be turned on.

Is the fuse normal?

Is normal state restored when once unplugged 
power cord is plugged again after several seconds.

Is the AL+5V line voltage normal?

Check each rectifying circuit of secondary circuit 
and service it if defective.

See FLOW CHART No.2  <The fuse blows out.>

Check for lead or short-circuiting of primary
circuit component and service it if defective.
(Q1001, Q1003, T0011, D1001, D1002, D1003,
D1004, D1011, C1005, C2014)

Yes

Yes

Yes

No

No

No

The fuse blows out.

After servicing, replace the fuse.

Check the presence that the primary component
is leaking or shorted and service it if defective.

Check the presence that the rectifying diode or circuit  
is shorted in each rectifying circuit of secondary side 
and service it if defective.

When the output voltage fluctuates.

No

Yes

Does the secondary side photo coupler circuit
operate normally?

Check the circuit and service it if defective.
(IC1001, D1006, D1012, D1024)

Check the circuit and service it if defective.
(IC1001, Q1004, D017, D1019)

When buzz sound can be heard in the vicinity of power circuit.

Check if there is short circuit on the rectifying diode and the circuit in each rectifying circuit of secondary side 
and service it if defective. (D013, D014, D016, D018, D019, D1008, D1016, D1030, D1031, D1032, IC1504, 
IC1505, Q1508, Q1510, Q1511, Q1513, Q1515, Q1516, Q1518, Q1542)

No

Yes

-FL is not outputted. 

Is the supply voltage of -30V fed to the anode of 
D018?

Check D018 and their periphery, and service it if 
defective.

Check for load circuit short-circuiting or leak, and 
service it if defective.

1-11-2

E9B30TR

No

Yes

Check D1008, C1007, and their periphery, and 
service it if defective.

P-ON+2.5V is not outputted. 

Is 4V voltage supplied to Pin(1) of IC1504?

Replace IC1504.

No

Check D016, D1032, L013, C017, C018 and their 
periphery, and service it if defective.

TIMER+5V is not outputted. 

Is 5V voltage supplied to the emitter of Q1513?

Is the "L" pulse (approximately 0V) inputted to 
the base of Q1516?

Is the "H" pulse (approximately 5V) inputted to 
the base of Q1517?

Is 5V voltage supplied to the 
Pin(37,99) of IC501.

Replace Q1516.

Replace 
Q1517.

Yes

FLOW CHART NO.8
P-ON+5V (AL+5V, EV+5.5V) is not outputted. (P-ON+9V is outputted normally)

Is 5V voltage supplied to the collector of Q1518?

Replace Q1518.

No

No

Yes

Yes

Is the "H" pulse inputted to the base of Q1518?

Check D016, D1032, L013, C017, C018, and their 
periphery, and service it if defective.

Check R1523 and their periphery, 
and service it if defective.

FLOW CHART NO.7
P-ON+9V is not outputted. (P-ON+44V is outputted normally)

Is 12V voltage supplied to the collector of Q1515?

Replace Q1515.

No

Yes

Yes

Check C014, D014, D017, L010, C015, and their 
periphery, and service it if defective.

FLOW CHART NO.6
P-ON+44V is not outputted. 

Is 44V voltage supplied to the emitter of Q1516?

No

No

Is the "H" pulse (approximately 10V) inputted to 
the base of Q1515?

Check D1511, R1568, R1569, R1570, and their 
periphery, and service it if defective.

No

Yes

Yes

Replace IC501.

Yes

Check AL+5V and 
Timer+5V line, and 
service it if defective.

No

No

Check D013, C013, and their periphery, and 
service it if defective.

Is the "L" pulse outputted to the collector of Q1512?

Check Q1512, D1508 and their periphery, and 
service it if defective.

Replace Q1513.

Yes

No

Yes

1-11-3

E9B30TR

Yes

Yes

Yes

Yes

No

No

No

No

DVD-P-ON+12V is not outputted. 

Replace Q1511.

No

Yes

Is the "L" pulse outputted to the collector of 
Q1514?

Check Q1514 and PWR-SW line, and service it if 
defective.

DVD-P-ON+5V is not outputted. (AL+5V is outputted normally.)

Is the "H" pulse inputted to the base of Q1510?

Replace Q1510.

Check R1531, R1532, R1710, R1711 and their 
periphery, and service it if defective.

Yes

No

The fluorescent display tube does not light up.

Is 5V voltage supplied to Pin(13, 43) of IC612?

Is approximately -24V to -28V voltage supplied to 
Pin(30) of IC612?

Is there approximately 500kHz oscillation to 
Pin(5) of IC612?

Are the filament voltage applied between Pin(1)
and Pin(24) of the fluorescent display tube?
Also negative voltage applied between these pins 
and GND?

Replace the fluorescent display tube (FL601).

Check the EV+5V line and service it if defective.

Check the -FL line and service it if defective.

Check R618, IC612 and their periphery, and 
service it if defective.

Check the power circuit, D1016, D1017, 
R1040, R1041, C1018 and their periphery, and 
service it if defective.

No

Check D1031, L1013, C1037, C1039 and their 
periphery, and service it if defective.

Is 12V voltage supplied to the emitter of Q1511?

Yes

No

Is 5V voltage supplied to Pin(1) of IC1505?

DVD-P-ON+3.3V is not outputted. 

Replace IC1505.

Check D016, D1032, L013, C017, C018 and their 
periphery, and service it if defective.

Yes

1-11-4

E9B30TR

Yes

No

The key operation is not functioning.

Are the contact point and the installation state of 
the key switches normal?

Is the control voltage normally inputted into Pin(8) 
of IC501?

Check the key switches and their periphery, and 
service it if defective.

No

Re-install the key switches correctly or replace 
the poor switch.

No DVD operation is possible from the remote control unit. (Operation is possible from the unit.)

Replace the RM1501 (remote control receiver).
Replace remote control unit if needed.

Check the line between the RM1501 (remote 
control receiver) and Pin(14) of IC501, and 
service it if defective.

Is the "L" pulse sent out from Pin(1) terminal of the 
RM1501 (remote control receiver) when the remote 
control unit is activated?

Is the "L" pulse signal supplied to Pin(14) of 
IC501?

Replace IC501 or DVD MECHANISM & DVD 
MAIN CBA ASSEMBLY.

Yes

Yes

Replace IC501 or DVD MECHANISM & DVD 
MAIN CBA ASSEMBLY.

Yes

Is 5V voltage supplied to Pin(3) terminal of the 
RM1501 (remote control receiver)?

Yes

No

Check AL+5V line, and service it if defective.

No

No

0.51

0.92

1.27

1.61

1.98

2.39

2.90

3.60

4.30

SENS-
INH

-----

DVD REC
/OTR

OPEN/
CLOSE

DUBBING

DVD
PLAY

DVD
STOP

-----

-----

Terminal voltage of IC501-7,8

KEY-2

IC501-8

(V)

Replace the DVD MECHANISM & DVD MAIN CBA 
ASSEMBLY.

The [No Disc] indication.

Both picture and sound do not operate normally.