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– 5 –

•

This device includes a self-diagnosis function.

•

In case of abnormalities, the STAND BY indicator automatically blinks.  It is possible to predict the abnormality location by the

number of blinks.  The Instruction Manual describes blinking of the /STAND BY 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 STAND BY 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 malfunc-

tions occurred.

Note1: If a +B overcurrent is detected, stoppage of the vertical deflection is detected simultaneously. The sympton that is diagnosed first by the microcontroller is displayed on screen.
Note 2: Refer to Screen (G2) Adjustment in Section 3-1, 2 of this manual.
Note 3: If STANDBY indicator blinks six (6) times, unplug the unit and wait 10 minutes before performing the adjustment.

7 times

Horizontal deflection stopped

• Q8035, 8038 is shorted. (D board)

8 times

High voltage error

• T8005 is faulty. (D board)

0

Power does not turn on

 •Power cord is not plugged in.
• Fuse is burned out (F6001) (G board)

• Power does not come on.
• No power is supplied to the unit.
• AC power supply is faulty.

2 times

+B overcurrent (OCP)
(See Note 1)

• H. OUT (Q8024) is shorted. (D board)
• +B PWM (Q8035, 8038) is shorted. (D board)

• Power does not come on.
• Load on power line is shorted.

3 times

+B overvoltage (OVP)

• IC501 is faulty (G board)
• IC5002 is faulty (G board)

• Has entered standby mode.

4 times

Vertical deflection stopped

• +- 15V is not supplied. (D board)
• IC8003 is faulty. (A board)

• Has entered standby state after horizontal raster.
• Vertical deflection pulse is stopped.
• Power line is shorted or power supply is stopped.

5 times

White balance failure
(Not balanced)

• Video out (IC7101, 7201, 7301) is faulty. (CR, CG, CB board)
•CRT drive (IC309) is faulty. (A board)
•G2 is improperly adjusted. (See Note 2)

• No raster is generated.
• CRT cathode current detection reference pulse output is small.

6 times

LOW B OCP/OVP
(Overcurrent/over voltage)
(See Note 3)

• +5 line is overloaded. (A, B boards)
• +5 line is shorted. (A, B boards)

• No picture
• No picture

Audio error

9 times

• +- 19V line is shorted. (A, B boards)
• IC708 is faulty. (A board)
• PS701 or PS702 is opened. (A board)

• No sound

Lamp OFF : 
3.0 seconds

Lamp ON : 0.3 seconds

Lamp OFF : 0.3 seconds

•

The STAND BY indicator blinking display is released by turning OFF the power switch 
on the TV main unit or removing the plug from the power.

*

 One blink is not used for self-diagnosis.

•EXAMPLE

<Diagnosis Items>  <Number of Blinks>

• +B overcurrent  

2 times

• +B overvoltage

3 times

• Vertical deflection stop

4 times

< FRONT PANEL >

(EXEPT HR532N90)

(HR532N90)

STAND BY indicator

– 6 –

•

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.

•

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.

•

When ending the self-diagnosis screen completely, turn the power switch OFF on the remote commander or the main unit.

   ˘

   Be aware that this differs from the method of 

   entering the service mode (volume   +   ).

DISPLAY   b   Channel    5   b   VOL    –    b   POWER

SELF DIAGNOSIS

    2 : +B  OCP

N/A

    3 : +B  OVP

N/A

    4 : V STOP

0

    5 : AKB

1

    10 : WDT

24

Numeral “0” means that no fault
was detected.

Numeral “1” means a fault was detected
one time or more

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)

– 7 –

OCP

Low B and +B line detect DET SHORT, and shut-down POWER ON RELAY.

Reset by turning power on/off.

In case of +B is loaded approx. 1.5A or more, microcomputer detects it via IC5005

OVP

In case of +B becomes approx. 150V or more, POWER ON RELAY shuts down and microcomputer detects it via IC5005.

Reset by turning power on/off just the same as OCP.

Low B

Occurs when set +5V is out

V Stop

In case of V Drive disappeared, Q8001 detecs it and shut-down POWER ON RELAY. Microcomputer detects it and makes LED

blinking.

AKB

IK detection.  Makes LED blinking in case of microcomputer doesn’t detect IK returns of IC309  (CXA2150AQ) 20 seconds or

more.

H Stop

In case of H DRIVE is disappeared, Q378 detects it and shut-down POWER ON RELAY shuts down.

Microcomputer receives H Stop data from Q378 and makes LED blinking.

HV Stop In case of HV becomes 33KV or more. IC8006  detects it and shut-down

POWER ON RELAY. Microcomputer makes LED blinking.

Audio

In case of DC component overlaps the output of Audio Amp., POWER ON RELAY shuts down.

Microcomputer detects it and makes LED blinking.

49

53

43

24

45

44

31
28
29

25

58

35

34

5. AKB

5. AKB

4. V STOP

3. OVP

2. OCP

6. LOW B

8. HV.STOP

9. Audio

IC704

MAIN-CPU

IC309

CXA2150AQ

Y/C JUNGLE

D9101

TIMER/STANDBY

R765

IC702

EEPROM

IC703

EEPROM

Q714

+5V DETECT

Q378

H PULSE

Detector

IC8006

HV Detector

Q8001

V Pulse Detector

IC5005

 OVP Buffer

OCP Buffer

C Board

DC Detect

IC8003
V Drive

IC708

6. H STOP

BUS

26

30

OVP DETECT

OCP DETECT

Audio AMP

– 8 –

2

 Rear board

1

 Nine screws,

     tapping, hexagon head

2

 Chassis assy

1

 Three screws,

     tapping, hexagon head

1

 Disconnect CN17, 18, 19 

     on A board.

From V boards CN9001.

(The extension cable is not 
  supplied because of the
  countermeasure for radiation.)

D board

CN17, 18, 19

A board

2

 Covers

Cut them off with a plier or the like
from chassis assembly in case of 
checking printed circuit boards.
After checking, turn over the covers 
and secure them with screws.

Screws
(+BVTP3x12)

Chassis assembly      

2

 Screw,

     tapping,
     hexagon
     head

2

 Screw,

     tapping,
     hexagon
     head

3

 Six screws

  (+BVTP4x12(HR432K90))
  (+BVTP4x16
  (Except HR432K90))

1

 Cap,

     speaker
     grille

1

 Cap,

     speaker
     grille

4

 H2 board

5

 Button, multi

Except HR432K90