DOWNLOAD Sony KDL-40NX720 / KDL-46NX720 / KDL-55NX720 / KDL-60NX720 Service Manual ↓ Size: 10.47 MB | Pages: 87 in PDF or view online for FREE

Model
KDL-40NX720 KDL-46NX720 KDL-55NX720 KDL-60NX720
Pages
87
Size
10.47 MB
Type
PDF
Document
Service Manual
Brand
Device
TV
File
kdl-40nx720-kdl-46nx720-kdl-55nx720-kdl-60nx720.pdf
Date
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Sony KDL-40NX720 / KDL-46NX720 / KDL-55NX720 / KDL-60NX720 Service Manual ▷ View online

KDL-40NX720/46NX720/55NX720/60NX720 43
SECTION 5 - FLOW CHARTS AND DIAGRAMS
OVERVIEW
The following flow charts provide information to determine what repair parts to order based on the TV error.
KDL-40NX720/46NX720/55NX720/60NX720 44
SECTION 5 - FLOW CHARTS AND DIAGRAMS
NO POWER
VLED_VCC
GL_CTRL
VLED_GND
LD_ERR
1~4
6~10
11
13
POWER_ON
TCON_ON
BL_ERR
AC_OFF_DET
1
6
7
8
GND
AU_GND
STBY3.3V
AU_12V
9
10
11, 13
12, 14
GND
TCON_12V
REG_12V
REG_12V
15
16, 18
20, 22
24, 26
AC IN (N)
AC IN (H)
AC IN (N)
AC OUT (N)
AC IN (H)
AC OUT (H)
1
2
1
3
5
7
CN6801
CN6151
TCON_12V
AUDIO_GND
REG_12V
REG_12V_GND
1
2, 3
4, 5
6, 7
AUDIO_12V
STBY3.3V
8, 9
10
GND
POWER_ON
TCON_ON
BL_ERR
1
3
7
8
AC_OFF_DET
9
CN6002
CN6001
TO LD BOARD
ENERGY 
SAVING 
SWITCH
BATL
G4 (40")
G5 (46")
CN6003
CN6002
14
LED_ON
FIGURE 5-1.  POWER SUPPLY DIAGRAM (KDL-40NX720/46NX720 ONLY)
KDL-40NX720/46NX720/55NX720/60NX720 45
SECTION 5 - FLOW CHARTS AND DIAGRAMS
REG12V
AC_OFF_DET
GND
BL_ERR
1
2
4
7
POWER_ON
TCON_ON
BL_ERR
AC_OFF_DET
1
6
7
8
GND
AU_GND
STBY3.3V
AU_12V
9
10
11, 13
12, 14
GND
TCON_12V
REG_12V
REG_12V
15
16, 18
20, 22
24, 26
AC IN (N)
AC IN (H)
AC IN (N)
AC OUT (N)
AC IN (H)
AC OUT (H)
1
2
1
3
5
7
CN6102
CN6151
TCON_12V
AUDIO_GND
REG_12V
REG_12V_GND
1
2, 3
4, 5
6, 7
AUDIO_12V
STBY3.3V
8, 9
10
GND
POWER_ON
TCON_ON
BL_ERR
1
3
7
8
AC_OFF_DET
9
CN6002
CN6001
ENERGY 
SAVING 
SWITCH
BATL
G6
CN6003
CN6002
PFC_OUT
2
PFC_GND
1
PRI_GND
2
PRI_VCC
1
1
2
4
7
CN6501
CN6502
CN6701
2
1
2
1
CN6600
CN6601
VLED_VCC
GL_CTRL
VLED_GND
LD_ERR
1~4
6~10
11
13
LED_ON
14
G7
TO LD 
BOARD
FIGURE 5-2.  POWER SUPPLY DIAGRAM (KDL-55NX720/60NX720 ONLY)
KDL-40NX720/46NX720/55NX720/60NX720 46
SECTION 5 - FLOW CHARTS AND DIAGRAMS
No Power
Is standby LED 
blinking?
No
Yes
No
See protection 
flowchart
Yes
Is energy
Saving switch on 
side of unit turned 
off?
Does red standby 
LED on front panel 
light?
High (3.3V)
on pin 7 of CN6151 
on power supply?
Yes
No
 Main Board
Yes
Turn switch on
No
ENERGY SAVING 
SWITCH
Press power 
button while 
monitoring pin 1 
of CN6151 on 
power supply 
board
High (3.3V)
on pin 1 of CN6151 
on power supply?
Yes
No
   G4 Board (40")
   G5 Board (46")
   G6 Board (55/60")
   G4 Board (40")
   G5 Board (46")
   G6 Board (55/60")
   G4 Board (40")
   G5 Board (46")
   G6 Board (55/60")
FIGURE 5-3.  NO POWER
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