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– 5 –

• This device includes a self-diagnosis function.

• In case of abnormalities, the STANDBY/STEREO indicator automatically blinks.  It is possible to predict the abnormality location by the

number of blinks.  The Instruction Manual describes blinking of the STANDBY/STEREO indicator.

• If the symptom is not reproduced sometimes in case of a malfunction, there is recording of whether a malfunction was generated or not.

Operate the remote command to confirm the matter on the screen and to predict the location of the abnormality.

• When a malfunction occurs the STANDBY/STEREO indicator only blinks for one of the following diagnosis items.  In case of two or

more malfunctions, the item which first occurred blinks.  If the malfunctions occurred simultaneously, the item with the lower blink

count blinks first.

• The screen display displays the results regarding all the diagnosis items listed below.  The display “ 0 ” means that no malfunctions

occurred.

  

 

     

     

            !

"  #    " $ !%

&       

! 

"# $% "  '%

  ()

 

 

* 

¥ Power cord is not plugged in.

¥ Fuse is burned out (F1601) (G board)

¥ Power does not come on.

¥ No power is supplied to the unit.

¥ AC power supplyis faulty.

Power does not turn on

¥ Lamp cover is not attached securely.

¥ No picture/No sound

Lamp cover error

¥ FAN1 or FAN2 power is not supplied. (A board)

¥ FAN connector is not attached securely.

¥ No picture/No sound

FAN stopped

Lamp driver error

¥ Lamp driver is faulty.

¥ No picture/No sound

¥ +5 V is not supplied. (G board)

¥ No picture/No sound

Low B error

¥ Audio ±15 V line is shorted. (A, G board)

¥ IC1203 or IC1204 is faulty. (A board)

¥ PS1601 or 1602 is opened. (G board)

Audio error

¥ No picture/No sound

Lamp error

¥ Lamp for the light souce burns out.

¥ No picture/No sound

0

3 times

4 times

5 times

6 times

9 times

LAMP LED

flashes

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• In cases of malfunctions where it is not possible to determine the symptom such as when the power goes off occasionally or when the

screen disappears occasionally, there is a screen display on whether the malfunction occurred or not in the past (and whether the detection

circuit operated or not) in order to allow confirmation.

<Screen Display Method>
• Quickly press the remote command button in the following order from the standby state.

• The results display is not automatically cleared.  In case of repairs and after repairs, check the self-diagnosis screen and be sure to return

the results display to “ 0 ”.

• If the results display is not returned to “ 0 ” it will not be possible to judge a new malfunction after completing repairs.

<Method of Ending Self-Diagnosis Screen>
• When ending the self-diagnosis screen completely, turn the power switch OFF on the remote commander or the main unit.

1. Power off (Set to the standby mode)

2. DISPLAY   b   Channel    5    b   VOL    +    b    POWER    (Service Mode)  

3. Channel    8   b   ENTER   (Test reset = Factory preset condition)

   J

   Be aware that this differs from the method of 

   entering the service mode (volume   +   ).

DISPLAY   b   Channel    5   b   VOL    –    b   POWER

 

       

    

      

 

  

B

 b

 

   

! " !

– 7 –

3 : Lamp Cover

When lamp cover SW is opened then pin 4 of CN1908 on the A board is high, LCD Engine µ-com (IC9502) detects
it and make turn off the lamp.

4 : FAN Stop

When FAN1 or FAN2 is stopped then pin 8 or q; of CN1908 on the A board is high, LCD Engine µ-com (IC9502)
detects it and make turn off the lamp.

5 : Lamp Driver

When lamp is not turned on then pin wl of LCD Engine µ-com (IC9502) is high, checks pin wk of LCD Engine µ-com
. If pin wk is low, it is judged no High Voltage.

6 : Low B

Detect +5 V line failure.

9 : Audio

When DC is appeared by audio amp failure at speaker line.

Then it is detected by MAIN µ-com (IC9004) and it turns off the main power.

LAMP : Lamp error

When lamp is not turned on then pin wl of LCD Engine µ-com (IC9502) is high, checks pin wk of LCD Engine µ-com.
If pin wk is high, it is judged lamp is burned out.

24 AUDIO PROT

43 LOW B ERR

D1902

CN1908

D1901

M board

A board

T board

IC9004

MAIN CPU

+5V DETECT

LAMP

DRIVER

LAMP

HV DETECT

FAN1

FAN2

IC9502

LCD ENGINE

+5V 

LAMP DRV

HV DET

LAMP PROT

28

FAN PROT 24

LAMP PROT 29

3. Lamp Cover

LAMP COV

HV DET

LAMP PRT

FAN1 PR

FAN2 PR

4. FAN Stop

9. Audio

6. Low B

LAMP COV 27

Q9505,9507-9509

S8001

DC DETECT

Q1211, 1213,1215

IC9005

AUDIO AMP

IC1203, 1204

4

12

3

8

10

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2

 

1

 

   

1

 

   

1

Six screws

(+BVTP 4 x 16)

2

OU bracket

3

 

   

7

 

6

4

 

5

 

   

1

2

 

   

2

   

1

   

3