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Notes: 1) When replacing the IC401 (IX1690GE) and IC507 (SNT1G08C), readjustment is required.

2) Adjustment must be made at an ordinary temperature.

If temperature is high immediately after reflow or if IC temperature has risen immediately after continuous operation,
adjustment must not be made.

(Adjustment spec)

-30mV - +10mV

(Inspection specification) -30mV - +20mV

(Adding temperature drift after adjustment)

The "MENU" key input.

The "1" key input.

"F0" key input (Keep pressing the "Return" and "Vol_up" keys for about 3 second.)

From (2)

Connect the L side of the voltmeter to CN302 (2 pin) and the H side to CN302 (4 pin).
With the cross key "

'

" or "

"

" set the output voltage to the range from -30mV to +10mV.

FOCUS offset adjustment mode

The "RETURN" key input.

Connect the L side of the voltmeter to CN302 (3 pin) and the H side to CN302 (1 pin).
With the cross key "

'

" or "

"

" set the output voltage to the range from -30mV to +10mV.

TRACK, offset adjustment mode

Make sure that the spindle motor stops.

Press the "RETURN" key.

FOCUS
000000**  000000**

FOCUS
000000**  000000++

DYNAMIC TEST
30000000 00000000

F00000000 00000000

The ++ part is changed every 
time of the key input.

TRACK 
000000**  000000++

The ++ part is changed every 
time of the key input.

ADJUST COMPLETE
00**00**  00000000

The investigated result is displayed in the ++ part.
The displayed contents are from the left "Focus offset adjustment value", "Track offset adjustment value".

End of adjustment

OSD display

1. Connect the DVD main unit and the computer as shown on the right. And then start-up the software for rewriting.
2. Turn on the power while the play key and the pause key of the DVD main unit are kept pressed at the same time. (Keep pressing

about 3 second.)

The red LED flickers 5 - 6 times with the 0.5 second cycle and then the green LED flickers with 0.1 second cycle.

3. According to the computer display, data transfer prompt is issued by inputting “Y” and

pressing ENTER key, and when the rewriting starts normally,

The LED in green lights on from flickering.

4. When the rewriting is completed normally,

The green LED lights on.

5. After completing the rewriting and checking the display of No. 4 shown above,

always press the “STOP” key. After that turn off the POWER.

6. Treatment in case of rewriting error

1

 The red LED flickers with 0.1 second cycle (When the stop key is pressed it

return to the condition of “2” so write again.)

2

 The red/green LED flickers by turns (When the stop key is pressed it becomes

the condition of “5” so write again from “1”.)

Personal computer

(DOS)

DVD itself

Connect to the video input 
terminal. 
Connect the “red” audio cable to jig.

Fixture for the ROM renewal

Check AC adapter or CAR adapter or battery-pack.

No

Voltage on DC JACK (Approx. 10.5V) or CAR 

JACK (Approx. 9V) or battery terminal (8.4 - 6V)?

Yes

The power cannot be turned on.(1)

•When using the AC adapter ------check circuit 

 around F9801, Q904, Q905, connector, lead wire.

•When using battery------check circuit around 

  F901, Q906, Q913, connector, lead wire.

No

Voltage specified above (Approx.6 - 11V) on 

TP9002, TP9003 in the MAIN?

Yes

Voltage of approx. 6 - 11V supplied on 5 pin of 

IC5503?

No

Voltage of approx. 5V supplied on 72 pin of 

IC5502 (TV microcomputer)?

Yes

Yes

29 pin of IC5502 still “L”?

No

Oscillation signal of 32kHz checked on 23, 24 pins 

of IC5502?

Yes

Check the IC5502 and X5502.

Check the Q5514 and Q5511.

No

No

No

Yes

Circuit protector CP9001 is actuated (disconnection) 

replace. Check CLD inverter circuit and INV-V line.

Refer to “

The key operation is disabled.

” or 

“No operation is possible from the infrared remote 

control.”.

No

Approx. 5V outputted to 45 pin of IC5502?

No

Yes

Check PCON-H line between IC5502 - IC9001.

Approx. 4.5 V supplied to 20 - 22 pins of IC9001?

Yes

Appropriate voltage outputted on each B line 

(TP9005 - 9012)?

No

No

Yes

Triangle oscillation of approx. 0.6V p-p checked on 

17 pin of IC9001?

Circuit protector CP9002, CP9003 cut?

Yes

Check short circuit of each SWITCHING TR and 

each B line.

  * All the B lines cannot be outputted for short 

    circuit of even 1postion (1 line).

Replace IC5503.

Replace IC9001.

Attach junction line properly or replace junction line.

No

Wire between operation PWB and MAIN PWB

connected properly?

Yes

Yes

The key operation is disabled.

No

Power button does not function.

No

When power button is pressed, 5 pin of IC5502 is 

"L"?

Yes

Is the control voltage normally into the pins(78)

and (80) of IC5502? (78pin

→

KEY)

Replace operation pwb.

Yes

Replace operation pwb.

Replace IC5502.

No

Replace IC5502.

Check TVMI_5V line.

Replace the remote control receiver.

Operation is possible from the body, but no 

operation is possible from the infrared remote

control.

Replace the remote control receiver or replace the

remote control transmitter is necessary.

Is 5V voltage supplied to the pin 2 terminal of

remote control receiver?

Is the "L" pulse sent out pin 3 terminal of receiver 

when the infrared remote control is activated?

(Actuated with power button)

DVD cannot be operated but TV can be operated. 

(DVD is actuated with play, stop button.)

To 2

1“L” pulse signal is generated from 79 pin of 

    IC5502?

    (Actuated with power button)

No

No

No

Yes

No

To 1

Replace IC5502.

No

Yes

Check line of 2 pin of IC3001.

2“L” pulse signal is generated from 32 pin of 

    IC502?

    (DVD is actuated with play, stop button.)

Replace IC502.

No

Yes

Check D506 line.

Yes

Yes

Yes

No operation is possible from the infrared remote control.

3.0V

3.7V

2.3V

1.6V

0.9V

Volume large       Volume small

TV/External/DVD button 

change over

SKIP(+)/RIGHT

→

SKIP(-)/LEFT

UP

↑

/STILL         DOWN

↓

/STOP

Play setting          Determination/Play

RETURN

Is the tray lid open?

When S802 is pressed, are the pins 3 and 4 

short-circuited?

Check the connection between pins 2 or 4 of S802 

and pins 27 of IC502.

Does the pickup move in the direction of inner 

periphery?

No

No

No

No

Check the cable connecting to the P706.

(Check the P706 and line of pins 2 and 4 of IC705.)

Check the cable connecting to the CN705.

Replace the S802.

Yes

No

Yes

After moving in the direction of inner periphery, 

does the pickup move in the direction of outer 

periphery?

Yes

Check the M_4.8V line.

Is 4.8V being applied to the pins 16 and 17 of 

IC702?

Yes

Replace the IC702.

Yes

The disc does not rotate.

No

Is FE signal inputted into the pin 8 of IC401.

Check or replace IC401.

Check the line between the IC301 and IC401.

When removing disc and applying load to spin 

motor (by stopping with hand, etc.), objective lends 

moves up and down? (Checking item to symptom)

Note) If load is not applied to spin, lens does not 

move and becomes NO DISC immediately.

See FLOW CHART NO.6<The [No Disc] indication.

(In case focus servo does not function.)>

Replace IC301.

Is there input signal on the pins(50,55) and (49,54) 

of IC301?

Is FE signal output to the pin 21 of IC301 when 

the disc is set?

No

No

Check the connection of optical pickup cable.

If it is normal, replace the optical pickup.

Yes

No

Yes

Yes

Yes

The [No Disc] indication.

 (In case of f

ocus error)

In case of CD For DVD, 58, 59, 63, and 64

Is the focus control signal output to the pin 14 of

IC401?

Check the IC401 DAC power source periphery 

circuit. If it is normal, replace IC401.

Check M_5V line.

Is 8V voltage applied to the pins 8 and 27 and 

25 and 24 of IC705?

Replace IC705.

Is the focus control signal from the pin 14 of IC401

input into the pin 20 of IC705?

Check the focus control signal (DA0) line between 

the IC705 and IC401.

Is the focus control drive voltage output from the 

pins 29 and 30 of IC705?

No

No

No

Yes

Yes

Yes

No

Yes

The [No Disc] indication.

 (In case f

ocus ser

v

o

 does not function.)

Check the line between the IC705 and the focus

actuator.

Focus control drive voltage applied to 27, 29 pin 

of CN301 (focus actuator terminal)? 

Check the connection of optical pickup cable.

If it is normal, replace the optical pickup.

Check the D_3.1V line and A_5V line.

Is the drive signal (SEL) of Q301 (LD POWER 

ON) being output to the pin 150 of IC401?

Is the drive signal (LDO1) of Q302 (LD POWER 

CTL) being output to the pin 45 of IC301?

When S801 is pressed, is the base of Q303 0.8V?

Is the voltage of 3.3V being applied to the emitter 

of Q301? And, is the voltage of 3.4V being applied 

to the emitter of Q302?

Is the voltage of 3.1V and 2.3V being applied to 

the pins 14 and 23 of CN301, respectively?

Check the connection of optical pickup cable.

If it is normal, replace the pickup.

Check the Q301 and line between Q302 and 

CN301.

Check the line from the pin 150  of IC401, through 

Q305, to the base of Q301.

Check the line between the pin 45 of IC301 and 

base of Q302.

Check the line between S801 and R309.

No

No

No

No

No

No

Yes

Yes

Yes

Yes

The DVD disc is not recognized.

(When the laser beam does not go on)

Check the A_5V line.

Is the drive signal (LDO2) of Q304 (LD POWER 

CTL) being output to the pin 4 of IC301?

When S801 is pressed, is the base of Q303 0.8V?

Is the voltage of 3.4V being applied to the emitter 

of Q304?

Is the voltage of 2.3V being applied to the pin 9 

of CN301?

Check the connection of optical pickup cable.

If it is normal, replace the pickup

Check the line between Q304 and CN301.

Check the line between the pin 4 of IC301 and 

base of Q304.

Check the line between S801 and R309.

No

No

No

No

Yes

Yes

Yes

The CD disc is not recognized.

(When the laser beam does not go on)

Check tray switch. S801, 802

No

Check for contamination of objective lens of 

optical pickup.

Replace the optical pickup unit.

When cover is closed, disc starts rotating?

Check the main PWB unit.

Set disc to mechanism.

Replace the main PWB unit.

Is the level of RF signal which is output from

pin 28 of IC301, normal?

No

No

No

Yes

Yes

Yes

Yes

Both picture and sound do not oper

ate nor

mally

.(1)

Check or replace Q2201.

Set the disc on the disc tray.

Check the V-MUTE line.(Pin3 of D2204)

5V applied to 1 pin of IC2201?

Are the video signals shown above input into

the pins of IC2201?

IC2201   2PIN Y/CR

IC2201 15PIN C/CB

Are the video signal outputted to each pins of

IC2201?

(1)When S1-OUT/VIDEO OUT is selected with the

signal selection switch(Q2201).

IC2201 11PIN CVBS

IC2201   6PIN S-Y

IC2201 12PIN S-C

Check the line between the pins of main unit

IC601 and the pins of IC2201.

IC601 117PIN 

→

 IC2001   2PIN Y/CR

IC601 118PIN 

→

 IC2001 15PIN C/CB

No

No

No

Yes

No

Yes

Yes

Picture do not oper

ate nor

mally

.

Check or replace IC6611.

Set disc to DISC tray and play.

Digital sound signal inputted to each pin of 

IC6611?

IC6611   38PIN   AMCLK

IC6611   40PIN   ABCLK

IC6611   41PIN   ALRCLK

IC6611   45PIN   AOUT0

Check each line between each pin of IC601 and 

each input pin of IC6611.

IC601   144PIN 

→

  IC6611   38PIN  AMCLK

IC601   154PIN 

→

  IC6611   40PIN  ABCLK

IC601   153PIN 

→

  IC6611   41PIN  ALRCLK

IC601   149PIN 

→

  IC6611   45PIN  AOUT0

System control signal inputted to each pin of 

IC6611?

IC6611 34PIN   DAC DA

IC6611 35PIN   DAC CK

IC6611 36PIN   DAC L

IC6611 37PIN   RSTO I

Check or replace IC6611.

Check each line between each pin of IC502 and 

IC504 and each input pin of IC6611.

IC502   110PIN 

→

  IC6611   34PIN  DAC DA

IC502   111PIN 

→

  IC6611   35PIN  DAC CK

IC502   112PIN 

→

  IC6611   36PIN  DAC L

IC504     12PIN 

→

  IC6611   37PIN  RSTO I

No

No

Yes

Yes

Yes

Check or replace IC6610.

Yes

Yes

Sound is not given properly from speaker.

Control signal inputted to each in of IC6610?

IC6610   2PIN   VOL_UP

IC6610   3PIN   VOL_DOWN

IC6610 17PIN   VOL_CLK

Check from each pin of IC5502 to each input pin

of IC6610.

IC5502   33PIN 

→

  IC6610   2PIN  VOL_UP

IC5502     4PIN 

→

  IC6610   3PIN  VOL_DOWN

IC5502   58PIN 

→

  IC6610 17PIN  VOL_CLK

No

Yes

Is 15 pin of IC6610 low?

Check the R6665, R6666, R6667, R6669, D6603.

No

Yes

Sound signal inputted to each pin of IC6610?

IC6610   5PIN   Lch Input

IC6610 23PIN   Rch Input

Check the IC6604, IC6605 and IC6607 and 

peripheral circuit.

No

Yes

Go to item 4.

Charge LED (red) lights on?

1.

Yes

No

No

No

Yes

No

No

Yes

Yes

Yes

No

Power supplied from AC adapter?

Power of main unit can be turned on and off?

Power of main unit OFF?

F9801 fuse is not cut?

Voltage of battery alone is 2V or more?

Replace fuse.

Failure of battery.

Cannot be charged from car adapter.

Failure other than charging.

Cannot be charged when power is ON. 

Turn off power and check.

44 pin of IC5502 is H?

6 pin of CN902 is H?

4.

No

No

No

No

Investigate CHG_ON line. Disconnection of 

MAIN - charge PWB connection FFC.

Investigate CHG_ON line or breakdown of IC5502.

Yes

Yes

Yes

Yes

2 pin of IC901 oscillating at approx. 200kHz?

19 pin of IC901 oscillating at approx. 200kHz?

Voltage on C901?

Investigate from C901 to battery terminal.

Check around IC901 or breakdown of IC901.

Check around IC901 or breakdown of IC901.

Investigate Q908, D906, L901, and R915.

In the condition that power is supplied from AC adapter and power is off, nothing is connected to battery terminal.

2.

Yes

No

Yes

Yes

No

Yes

No

Voltage of 0V/8.4V generated to battery terminal 

cyclically.

"H" voltage on 8 pin of IC5502?

No

"H" voltage on 3 pin of IC5502?

Yes

Investigate CHG_ON line. Charging circuit must 

function accompanied by CHG_ON cyclically.

Voltage on 77 pin of IC5502?

44 pin of IC5502 repeating H/L cyclically?

If certain voltage is on, investigate BAT_V line. 

When battery is not connected, voltage of 0V/4.2V

 is outputted cyclically.

Study on other items.

Investigate line of DCIN_H.

Investigate Car_H line (Must not charge if it is H.)

Only battery is connected. (Assume herein that battery with voltage of 7.4 V is connected.)

3.

Yes

No

No

No

Yes

Voltage of 3.7V on 77 pin of IC5502?

Voltage on 7 pin of CN902?

Yes

No

Yes

1V or less on 9 pin of CN902?

Investigate from 9 pin of CN902 and around Q905.

No problems with this item.

Investigate around IC5504.

Investigate around IC5504 and 7 pin, 8 pin of 

CN902.