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3-time blinking

See other flows

No

Yes

Tuner Error ?

[except JP:R6001 R6002 C6004 C6005 R1468 R1469]

Check the voltage of Main Tuner I2C / JL6010, JL6011
Check the voltage of Sub Tuner I2C (EU,JP only) / JL6021, 
JL6022

NG

[except JP:R6001,R6002,C6004,C6005,R1468,R1469]
[JP,EU:R6003,R6004,C6006,C6007,R1466,R1467]
[JP only:R6005,R6006]
[If these parts are OK, check Muffin]

OK

Check TU_3.3V / JL6005
Check TU_1.8V (except UC) / JL6006
Check TU_DEM_3.3V (except UC) / JL6019
Check TU_1.1V(JP/FB6800 tuner-side)

NG

[FB6001,C6002,C6003]
[FB6004,C6014,C6015]
[FB6006,C6020,C6021]

[FB6800,C6800]

[If these parts are OK, go to DDCON troubleshooting]

OK

Check TU_12V(EU,JP only)/JL 6027

NG

OK

[go to “NO PICTURE@Tuner”]

[Change Tuner Module](UC:TU6000,PAD/LA-ISDB/CH/HK:TU6001,EU:TU6003,JP:TU6802)

89

LED 3x blinking

Segment “XS”?

Yes

Audio Error ?

See other flow

No

Replace B-K Harness

OK ?

Yes

No

B-K harness NG

Yes

Go to page 

Power Off Checking*1

No

Replace K-PWB

OK ?

Yes

K-PWB NG

Go to page 

Power off Checking*2

OK ?

Replace B-PWB

No

Yes

B PWB NG

OK ?

B-PWB NG

90

1) Power Off Checking*1

(1) PVDD-GND short check
Measure impedance between PVDD and GND at C7706, 
C7707.

(1) PVDD-GND short check
Measure impedance between PVDD and GND at C7722, C7762, C7782, 
C7834.

Note 2:

Note 1:

Power Off Check*1

(3) Fuse open check  
Measure impedance of fuse F7700 F7702 5A (12 5V)

If impedance is <100

Ω → NG

(2) LDO out short check
Measure impedance between +3.3V and GND at C9130.
If impedance is <100

Ω → NG

C7834.
If impedance is <100

Ω → NG

(2) LDO out short check
Measure impedance between +3.3V and GND at 
C7909.
If impedance is <100

Ω → NG

Segment “XS”?

Yes

Measure impedance of fuse F7700, F7702  5A (12.5V)
If fuse open 

→ NG

(3) Fuse open check  
Measure impedance of fuse

F7702, F7704, F7705, F7701  5A (12.5V)
F7700  3.15A (DDC5V)

If fuse open 

→ NG

(1) K-PWB

PVDD-GND short ?

(See Note 2)

Yes

Power Off Check*3

(1) B-PWB

PVDD-GND short ?

(See Note 1)

Yes

No

No

Measure the Speaker 

impedance by multi-meter

Less than 3

Ω ? 

C

fi

th

k

Replace Speaker

No

Yes

(2) K-PWB

LDO out short ?

(See Note 2)

Yes

No

(2) B-PWB

LDO out short ?

(See Note 1)

Yes

Confirm the speaker 

harness

Cut or shorted

to the chassis ?

Replace Speaker Harness

No

Yes

(3) K-PWB

Fuse broken ?

(See Note 2)

No

Yes

(3) B-PWB

Fuse broken ?

(See Note 1)

No

Yes

Replace K-PWB

Return to LED 3x blinking 

or Power Off Checking*3

No

Replace B-PWB

No

91

2) Power Off Checking*2

(4) 12 5V check BMFL / BMFW

(4) 12.5V check BMFL / BMFW
Measure voltage between PVDD and GND at 
capacitor C7706 or C7707.(See 3.3)
Voltage rise more than 0V for a moment at 
power on

→ Yes

Power Off Check*2

(5) 12.5V check   KS-PWB (XS)
Measure voltage between PVDD and GND at 
capacitor C7722, C7762, C7782 or C7834. (See 
3.3)
Voltage rise more than 0V for a moment at

(5) 12.5V check

12 V i

li d

Yes

Segment “XS”?

Yes

No

(4) 12 5V check

Voltage rise more than 0V for a moment at 
power on

→ Yes

12.5V is supplied to

K-PWB for a moment

before LED 3x blinking ?

No

Yes

(4) 12.5V check

12.5V is supplied to

B-PWB for a moment

before LED 3x blinking ?

No

Yes

Replace G-K Harness

OK ?

No

Yes

Replace B-K Harness

OK ?

No

Yes

Replace G-PWB

OK ?

No

Yes

R t

t

Replace G-PWB

OK ?

No

Yes

R t

t

Return to 

LED 3x blinking

Finish

Return to 

LED 3x blinking

Finish

92