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1-7-5

TESTMODE

 (I) when loading DVD

(II) when loading CD/VCD

Fig. g Error Rate Mode Screen

In "PLAY MODE-ERROR RATE" of fig. g, each item
means the following:

1. Inner circumference of loaded disc (on DVD:

inner circumference of layer 0)

2. Outer circumference of loaded disc (on DVD:

outer circumference of layer 0)

3. Outer circumference of layer 1 on loaded disc (on

DVD only: when in parallel, inner circumference)

4. Inner circumference of layer 1 on loaded disc (on

DVD only: when in parallel, outer circumference)

In some cases, items 2,3 and 4 may not be shown on
the screen depending on the content of the loaded
disc.

8. Select the address where the error rate is to be

measured using number buttons on the remote
control unit.

Fig. h will appear on the screen. In table (*2), the
screen will show for each 80ECC block, the number
of errors corrected on the 1st PO/PI/2nd PO and the
number of uncorrected errors. The number of cor-
rected errors will appear on the VFD. (Fig. i)

 (I) when loading DVD

(II) when loading CD/VCD

Fig. h Measuring Error Rate Mode Screen

Fig. i VFD in Measuring Error Rate Mode (example)

9. To finish measuring the error rate, remove the disc

and turn the power off.

1-8-1

E56H0TS

The power cannot be turned on.(1)

The fuse blows out.

After servicing, replace the fuse.

The power cannot be turned on.(2)

Is the fuse normal?

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

Is the EV 5V line voltage normal?

Is the voltage of secondary side normal?

Does the change from STANDBY LED indicate
turn-off?

Is the voltage of 3.3V supplied to Q2021?

Is the "H" signal inputted to the base of Q2021, 
when the POWER button activated on the DVD?

Is the "H" signal inputted at base of Q2021, 
when the POWER button activated on the remote 
control unit?

Replace Q2021.

The STANDBY LED indicate is flashing after 0.5 sec.

Are the "P-ON-H" pulse outputted from the 
pin(20) of CN1001?

Is the P-CON switch circuit operated normally?
(Q1002, Q1005, Q1006, IC1002, D1036, D1046)

Check the presence that the primary component
is leaking or short then service it if defective. 

See FLOW CHART No.3  <The fuse blows out.>

Check if there is any leak or shor-circuit on the 
primary circuit component?
(Q1001, Q1003,T1001, D1001, D1002, D1004, 
D1005, D1011, C1003, C1005)

Check each rectifying circuit of secondary circuit.

Check the EV 3.3V line.

Check the POWER button line.

Check the line between the remote control
receiver and Pin(26) of CN1001.

Replace the DVD Main CBA Unit.

Check each component, and replace.

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

Yes

Yes

Yes

No

No

No

No

No

No

No

No

No

No

Yes

Yes

Yes

Yes

Yes (below, confirmed operating at LED turn-off of 0.5 sec. interval.)

Yes

1-8-2

E56H0TS

When the output voltage fluctuates.

Yes

No

No

Yes

Yes

Yes

Yes

Yes

Yes

No

No

No

No

No

No

FLOW CHART NO.5
When buzz sound can be heard in the vicinity of the power circuit.

The fluorescent display tube does not light.

Is the voltage of 5V supplied to Pins(6, 24)
of IC2001?

Is the voltage of -24V supplied to Pin(15) of 
IC2001?

Is there 500kHz oscillation to Pin(26) of IC2001?

Check the signal lines of FP-DIN, FP-DOUT, 
FP-CLK, FP-STB of IC2001 and CN1001?

Are the filament voltage applied between (1, 2)
and (34, 35) of the fluorescent display tube?
Also negative voltage applied between these pins 
and GND?

Replace the fluorescent display tube.

Check the EV 5V line.

Check the -FL (-24V) line.

Check R2001, IC2001 and their periphery.

Check or replace IC2001 and DVD Main CBA unit.

Check or replace the power circuit, D1016, D1017 
and R1042, and their periphery.

The key operation is not functioning.

Are the contact point and the installation state of the 
key switches(SW2011-2014, 2016, 2017) normal?

Is the control voltage normally supplied to 
Pins(3, 4, 7, 8, 9, 10) of IC2001?

Check the key switches (2011-2014, 2016, 2017), 
and their periphery circuit.

Check if there is any short-circuit on the rectifying diode and the circuit in each rectifying circuit of the secondary side.
(D1003, D1008, D1009, D1013, D1016, D1030, IC1002, Q1002, Q1004, Q1007, Q1011, Q1014)

Does the photo coupler circuit on the secondary 
side operate normally?

Does the photo coupler circuit on the primary side
operate normally?

Check the circuit and replace the parts.
(IC1001, IC1006, D1048, D1015)

Check the circuit and replace the parts.
(IC1001, D1020, D1024)

1-8-3

E56H0TS

No operation is possible from the remote control unit.

Operation is possible from the DVD, but no
operation is possible from the remote control unit.

Is no operation possible if replacing the remote 
control unit?

Replace the infrared remote control receiver.

Original remote control unit is poor.

Check the line between the infrared remote control 
receiver and Pin(26) of CN1001.

Replace DVD Main CBA unit.

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

Is the "L" pulse signal supplied to Pin(26) of 
CN1001 from Pin(1) of receiver? (Be operated by 
SEARCH(-), SEARCH(+), PLAY, STILL/PAUSE, 
STOP, POWER and OPEN/CLOSE button.)

Yes

Yes

Yes

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

Yes

Yes

No

PON 12V is not outputted.

Is PON12V voltage supplied to the collector of Q1002?

Does the P-ON switch circuit operate normally?
(Q1005, Q1006, D1036, etc.)

Replace Q1002.

Check D1009, C1012 and the periphery circuit.

Check each component, and replace.

Yes

Yes

No

No

No

Check EV 5V line.

No

No

PON 5V is not outputted. (PON 12V is outputted normally.)

Is 5V voltage supplied to the collector of Q1004?

Is the "H" pulse inputted into the base of Q1004?

Replace Q1004.

Check D1030, D1048, C1035, C1048 and the 
periphery circuit.

Check D1046 and the periphery circuit.

Yes

Yes

No

-FL is not outputted.

Is -24V voltage supplied to the anode of D1003?

Check D1003 and periphery circuit.

Check if there is any leak or short-circuit on the 
loaded circuit.

Yes

No

PON 3.3V is not outputted.

Is 3.3V voltage supplied to the emitter of Q1011?

Does the P-CON switch circuit operate normally?
(Q1005, Q1006, etc.)

Replace Q1011.

Check D1008, D1015, C1007, C1038 and the 
periphery circuit.

Check each component, and replace.

Yes

Yes

No

No

No