DOWNLOAD Sony KDS-R50XBR1 / KDS-R60XBR1 Service Manual ↓ Size: 12.3 MB | Pages: 127 in PDF or view online for FREE

– 13 –

- This device includes a self-diagnosis function.
- In case of abnormalities, the POWER/STANDBY indicator automatically blinks. It is

possible to predict the abnormality location by the number of blinks. The Instruction
Manual describes blinking of the POWER/STANDBY 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 POWER/STANDBY 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.

La

Temp error

mp cover error

3 times

2 times

- L

- Set temperture is high.
- Temp sensor connector 
  is not attached securely.
  

 

-Lamp is not set securely.

amp cover is not

attached securely.

Lamp driver error

5 times

- Lamp driver is faulty.

- No picture/No sound

Low B error

6 times

- B_12V is not supplie

(GT board)

d.

- No picture/No sound

- Lamp for the light
source burns out.

- No picture/No sound

- No picture/No sound

- Short-circuit of Audio power
supply line.
-Blow out of fuse.
(PS3001 on K board)
-IC failure.
(IC3005 on K board)

D-

ATSC OVP

OVP error

8

10 times

times

-B -12V is over voltage.
(B board)

-Q_10.5V is over voltage.
(GT board)

- No picture/No sound

Fan stopped

4 times

- F an 1-4 power is not
supplied. (

- F

-Fan caught wires or 
harnesses.

an connector is not

attached securely.

- No picture/No sound

Lamp error

LAMP-LED flashes

- No picture/No sound

Audio error

7 times

- No picture/No sound

- No picture/No sound

– 14 –

- One blink is not used for self-diagnosis.

- Example
Diagnosis item

LED blinks

Lamp cover

3 times

Fan

4 times

LED ON : 0.3sec
LED OFF : 0.3sec

The POWER/STANDBY indicator blinking display is released by removing the plug from
the power or leaving for 2 minutes.

- 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.

Channel

Vol

Be aware that this differs from
the method of entering the
service mode (Vol +).

LED OFF

3.0sec

DISPLAY

5

-

POWER

1

: LAMP_ERROR

0

 2

: TEMP_ERROR

0

 2

: LAMP_TEMP

0

3

: LAMP_COVER

0

4

: FAN_ERROR

0

5

: LAMP_DRIVER

1

6

: LOWB_ERROR

0

7

: AUDIO_PROT

0

8

: D_OVP

0

10 : ATSC_OVP

0

SELF CHECK

- Numeral "1" means a fault was detected one time
- Numeral "0" means that no fault was detected

Indicators

– 15 –

- 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.

1. Power off (Set to the standby mode)

2.

Channel

Vol

3. Channel

- When ending the self-diagnosis screen completely, turn the power switch OFF on the

remote commander or the main unit.

8

ENTER

DISPLAY

5

-

POWER

2

:

Temp 

When the temperature sensor (for Ambient) on the S1 board detects high 
temperature or the temperature sensor (for Lamp) on the S2 board detects
high temperature or the temperature sensor (for Panel) on the C board detects
high temperature, the DE-micro (IC5) turns off the lamp.

 
3

:

Lamp cover

The rib at the back of the lamp cover closes the SW on the T1 board. The lamp 
closes the SW on the T2 board.
It is monitored by DE-micro (pin63 of IC5) and turned off the lamp when it is
opened.

4

:

Fan 

Fan rotation is detected by ‘‘FAN-PROT” and the DE-micro (pin92 of IC5) turns
off the lamp when it is ‘‘high”.

5

:

Lamp Driver

When the ‘‘LAMP-PROT” (pin83 of IC5) is high, the lamp is not turned on.
If the  ‘‘LAMP-HV-DET” (pin94 of IC5) is low at the same time, it classified as
no high voltage of the lamp driver.

6

:

Low B error

When no ‘‘D5V (SW_5V)”  is detected, pin 129 of TV-micro (IC7002) is low and
 it turns off the main power. (for example, blowout of thermal fuse).

7

:

Audio

When DC voltage is detected at the speaker output, ‘‘SP-PROT” (pin102  of IC5) 
is low and it turns off the main power.

8

:

D-OVP

Be not in use.

 9

:

Panel error

When there is not ack from the temperature sensor on the S1, S2 and C board or 
IIC line connector (CN2303: ASU board, CN7956: DSU board, CN6901: C board)
is not seated securely. it is monitored by DE-micro.

10

:  ATSC-OVP

Be not in use.

LAMP

:

Lamp

When the ‘‘LAMP-PROT” (pin83 of IC5) is high, the lamp is not turned on.  
If the ‘‘LAMP-HV-DET” (pin94 of IC5) is high at the same time, it classified  
as no lamp or a dead lamp.

– 16 –

3

2

2

1

Loosen screw

Lamp door assembly

Rear cover

4

4