Panasonic LCD-201411 / AVC-201411 / AX900 Service Manual / Other ▷ View online
Blinking time
Estimated
defect
board
Model name
Detect content
Peaks
LD6
(AX670/630)
LD6
(AX670/630)
Peaks
Pro5
(AX900/AX850/X940)
Pro5
(AX900/AX850/X940)
BL_SOS (LED driver)
1
(occurred 10s
after power on)
1
Panel/P
IROM SOS = Power on problem
(No F15V/SUB3.3V voltage)
1
(occurred soon
after power on)
---
P/A
IROM SOS = Power on problem
(No SUB5V/SUB1.5V/SUB1.1V voltage)
quick 3
P/A
No voltage SUB3.3V
(after wake up once)
7
7
A
Audio amplifier: SOUND_SOS
9
9
A/
Speaker
GCX_SOS
10
10
A
(AX630/670)
FR
(AX900/AX
850/X940)
FAN_SOS
---
11
FAN/A
Back End SOS (inside of Peaks)
12
---
A
Emergency SOS
13
13
A
When an abnormality occurs in the unit, the “SOS Detect” circuit is triggered and the TV shuts down.
Shut down means that turn off the TV_SUB_ON signal. The power LED on the front panel will flash a
pattern indicating the circuit that has detected an abnormality.
37
LED Blinking Summary
A
P
P2 A02
IC5000
IC8000
1
2
Q7403
9
9
5V
IC8710
IC8100
3.3V
IC8750
3.3V
IC8700
1.8V
IC5704
1.5V
1.1V
F
1
5
V
3
1
2
3
Q7402
IC8101
HDMI3.3V
SUB1.5V
SUB1.1V
SUB3.3V
TU1.8V
LCD_TV_SUB_ON
24V
Output
16V
Output
P
A
2
0
0
2
P6
1-7
1.2V
IC5702
DMD 1.2V
D
C
D
C
E
N
12V
Panel_VCC_ON
A16
44-51
BL_ON
LCD Module
PNL12V
Low
voltage
detect
BL_SOS
IC4900
AMP
11
11
Over voltage
protection
F
1
5
V
SOUND_SOS
SUB5V
T-CON
(OFF)
(OFF)
ON OFF
9 Blink
1 Blink
1 Blink
7 Blink
PFC
T7201
IC7201
DC/DC
IC7301
detect
(OFF)
N OFF
Back Light
14
14
N SOS
N SOS
Tr
IC8720
FUSE
PA 7403
IC7800
DCDC LED
Drive
34/48V
24/32V
38
(TNPA6032**)
(*)The DC level is different by the LCD panel.
Protection Circuit (AX630/670)
AX630/670
The troubleshoot of Blinking case
for AX670/AX630 model is basically
same as Full HD model (Peaks LD6).
Refer to the Technical Guide
“ITD1404901GE” .
Transformer
T7301
T7302
T7302
IC9000
FRC
(NTK)
9-15
FR
LD
AP
P
P2
A02
Q7403/05
9
17
5V
IC5420
IC8101/03
3.3V
IC8950
3.3V
IC5400
1.8V
IC5703
1.8V
0.9V
P
16
V
Q7402
IC8104
SUB1.8V
SUB_M_0.9V/SIB_I_0.9V
SUB3.3V
REG_1.8V
48/40V
LCD_TV_SUB_ON
48V
Output
16V
Output
1.1V
IC5705
DMD 1.1V
D
C
D
C
E
N
12V
Panel_VCC_ON
FR1
3-5
PNL12V
SUB5V
PFC
T7201
IC7201
DC/DC
IC7301
P16V
IC5000
ANALOG
ASIC
IC8000
Peaks
Pro5
16V
DC/DC
IC7405
IC7405
STB5V
IC1800
STB3.3V
IC1100
Stand-by/
Control
CPU
LED Drive
IC7700-07
DC/DC
IC7550
IC7550
/52/54/56
2
FR16
15
7
IC9500
FRC(GCX)
BL_ON
BL_ON
3.3V
1.5V
1.2V
1.5V
1.2V
1.8V
0.9V
0.9V
STB_I_1.2V
STB_I_1.5V
STB_I_1.8V
STB_I_0.9V
F16V
LD4
FR30/31
2
12
1-4
9-12
1-4
1-4
FR20
A15
BL_SOS
40
4
7
45
48
FR15
A16
12
2
Tr
IC4901/02
AMP
SOUND_SOS
Over
Volt-
age
Protec-
tion
(OFF)
GCX2_SOS
6
46
A08
HDMI3.3V
FAN_VCC
IC5911
IC5914
FANx3
FAN_SOS
Protection Circuit (AX900)
AX900
LCD Module
T-CON
Back Light
Tr.x2
(TNPA5936**)
FAN
FAN_VCC2
VLED(*)
56/68V
Transformer
T7301
T7302
T7302
39
LED blinks
Detail error
Board may defect
7
No voltage SUB3.3V detected
P/A/FR
SUB3.3V is provided from P16V . If the P16V /SUB voltage is not supplied
LED blinks 7 times.
Power on.
Check if voltage P16V at
pin 1-4 of A02 connector
pin 1-4 of A02 connector
before LED blinks?
No
Yes
(16V)
A board
P board
Remove P2 connector.
Check if short-circuit at
Check if short-circuit at
pin 1-4 of A02
connector?
No
Yes
(Shorted)
A board
P
P2
16V
Q7403/05
16V
A
IC8000
Peaks
Pro5
3.3V
IC5400
1.8V
0.9V
SUB1.8V
SUB_M/I_0.9V
SUB3.3V
P
A
20
00
D
C
D
C
E
N
IC4901/02
AMP
IC8101/03
IC8104
A02
40
Troubleshooting for LED Blinking ( AX800: Quick 3 time blink )
AX900
1-4
9-12
1-4
FR
12V
IC1800
1-4
F16V
3.3V
1.5V
1.1V
FR20
Remove P3
connector. Then
power on check.
Blink
quick 7
again
Power on
Correctly
Remove FR20
connector. Then
power on check.
Change to
10 blinks
FR board
Blink
quick 7
again
P
16
V
LD
AP
P3
13
AP3
13
10
AP1
9
LD1
Reconnect P3 and
Remove LD1
connector. Then
power on check.
AP board
LD board
Blink
quick 7
Power on
Correctly
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