DOWNLOAD Sony KD-55X9000A Service Manual ↓ Size: 11.74 MB | Pages: 127 in PDF or view online for FREE

Model
KD-55X9000A
Pages
127
Size
11.74 MB
Type
PDF
Document
Service Manual
Brand
Device
TV
File
kd-55x9000a.pdf
Date
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Sony KD-55X9000A Service Manual ▷ View online

KD-55/65X9000A(CH)
109
TROUBLE SHOOTING
3-1. NO POWER
START
Check JL9129 Voltage.
Is the voltage 1V?
Check JL9132 Voltage.
Is the voltage 5V?
Check JL9116 Voltage.
Is the voltage 3.3V?
Check JL9125 Voltage.
Is the voltage 1.5V?
END
Check F9105
Check F9104
Check F9102
Check F9102
no
yes
no
yes
no
yes
no
yes
Check JL9126, is 
it 1.18V?
yes
Check F9106
no
DC/DC converter check
3-time blinking
Check D+1.0V at
JL9129
on the B* Board
F9105,IC9103,etc
(B* Board)
Speaker
Check +3.3V_MAIN_1
at JL9116 on
the B* Board
Check
Speaker Impedance
at SP Connector
F9102,IC9102,etc
(B* Board)
Check AUDIO+12.5V
at pin 9/10/11 of
CN9101 on
the B* Board
G* Board
F4201,IC4201,etc
(B* Board)
IC4201,etc
(B* Board)
DC_ALERT
NG
OK
NG
OK
AUDIO
NG
OK
NG
OK
NG
OK
#2 
#3
DMD_TU_I2C 
or 
I2CB bus check:
Probe CL2205,
CL2206
I2C bus dumping or 
AYU2
I2CA bus check:
Probe CL5023,
CL5024
I2CA bus dumping 
resistor
or AYU2 
TUNER
NG
OK
NG
HDMI
OK
I2C_CCP check
R8502 and 
R8503
NG
OK
Brownie
I2C_CCP Pull Up 
Check +1.8V_MAIN on 
Pin 2 of IC9201
IC9201,etc
(B* Board)
Check +5V_MAIN
at JL9132 on
the B* Board
NG
OK
IC9101,etc
(B* Board)
SPIC check
Probe RB8522
OK
SPI dumping 
resistor
or AYU2 
NG
NG
1) 3 times blinking (DC Alert, Audio Error & Communication Error)
3-2. STANDBY LED BLINK
KD-55/65X9000A(CH)
110
TROUBLE SHOOTING
Check 12.5V to GND
impedance
F4201,IC4201,F4202,IC4202,F4203,IC4203
(B* Board)
Replace broken fuse.
High
enough
Low impedance
IC4201,IC4202,IC4203
burn or broken ?
Replace broken IC 
Yes
Check broken parts
around broken IC.
#2 
IC4201,IC4202,IC4203
(B* Board)
#3
IC or parts around it NG
Check the IC4201,IC4202 and IC4203
Out  pin 9, 16, 25, 32
Switching 0V to 12V
around 300-400kHz
No
Yes
Check the CN4802
DC level ~2V
No
L4201-L4208 
or
C4234-C4241
NG
Yes
IC4201-IC4203 NG
Check the IC4201-IC4203
I2S line pin 5, 6, 7, 8
IC9000 or around parts NG
No
Yes
No
If there is no failure, go to next page.(#4)
1) 3 times blinking (Audio Error)
KD-55/65X9000A(CH)
111
TROUBLE SHOOTING
#4 
Replace Harness 
Between B* and CX* 
Harness NG 
Symptom 
improvement
Replace CX* board 
CX* board NG 
Symptom 
improvement
NG
NG
HDMI_EQCX
B* board NG 
(around backend system IC and parts.)
1) 3 times blinking (SC_OUTERR/SC_ERR/FRCD_I2C/HDMI_EQCX)
KD-55/65X9000A(CH)
112
TROUBLE SHOOTING
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