Panasonic TX-LR37U3 Service Manual ▷ View online
TX-LR37U3
29
8 Measurements and Adjustments
8.1.
Voltage chart of A-board
Set A-Board to a dummy set and check the satisfaction with the specified voltage as following table.
8.2.
Voltage chart of P-board
Set P-Board to a dummy set and check the satisfaction with the specified voltage as following table.
Power Supply Name
Measurement Point
Specification (V)
SUB3.3V
TP8615
3.21V - 3.45V
SUB1.5V
TP8101
1.47V - 1.56V
SUB1.2V
TP8100
1.07V - 1.21V
SUB5V
TP0910
4.8V - 5.2V
VOLTAGE
TEST POINT
SPECIFICATION
STATE
PFC390V
+TP7201, 7202
390 ± 15V
Reception
* HOT
-TP7203, 7204
-
Reception
* HOT
DTV16V
TP7801, 7505
15.6 ± 1.5V
Reception
STBY6V
TP7506
5.8 ± 0.8V
Reception
5.8 ± 0.8V
Stand by
TX-LR37U3
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9 Block Diagram
9.1.
Main Block Diagram
(LED:4
TIMES)
(LED:9
TIMES)
(LED:7
TIMES)
(LED:1TIME)
(LED:3
TIMES)
DCDC
DCDC
VIDEO
COMP
2
C.A.T.S. SENSOR
EEPROM
P15V SENSE
LCD DRIVER
SUB3.3V
CH
INPUT/OK
DVDD2.5V
LD
OPERATION KEYS
LVDS-TX
STB3.3V
R/G/B/H/V
A
REMOTE RECEIVER
LINE FILTER
CPU BUS
SLOT
KEY3
SUB5V
VOFF2-6V
KEY1
TC1
/V
LD2
SUB5V
TC2
STB1.2V
TC3
SUB1.2V
STB1.2V
(SIDE)
SUB_ON
SUB3.3V
POWER LED
PWM
ANALOG-ASIC
AV SW
DCDC
ARC OFF
+6V
SIF_OUT
REMOTE IN
DCDC
IFD_OUT
RECEIVER
P15V
SUB5V
BL_SOS
P15V
SD CARD DATA
-/
LD4
SUB3.3V SENSE
LED DRIVER
SUB3.3V
STB3.3V
RELAY
STB5V
MAIN
USB
L/R
SUB1.8V
PWM
PROCESS VOLTAGE CONVERTER
ARC BUFFER SW
Y/PB/PR
STB5V
P
V
NEUTRAL
HDMI I/F
USB I/F
V/
STB3.3V
SUB9V
C.A.T.S. SENSOR
SUB_ON
VON31V
5.8VS
NAND FLASH
VIDEO_OUT
STB5V
CH
SUB1.5V
KEY3
A10
DCDC
HDMI2
HDMI1
PANEL
SUB1.5V
REMOTE RECEIVER
BL_ON
5.8VS
USB DATA
PFC CIRCUIT
24V
POWER
EEPROM
CPU BUS I/F
POWER LED
BL_SOS
SUB1.2V
DMD
HDMI3.3V
KEY1
MENU
KEY3
T-CON DCDC
RECTIFIER
LIVE
P15V
F16V
KA
DDR3
KEY1
VOL
TUNER
C.A.T.S. SENSOR
+/
SUB3.3V
LCD PANEL
OUT
P4
LED DRIVER
PWM
STB5.8V
P2
BL_SOS
RELAY SUBSTRATE
VOL
POWER SUPPLY
POWER LED(R)
LVDS DATA
DCDC
SD CARD
OVP DET
A09
DCDC
P15V
TC
BL_ON
SUB3.3V
P15V
AC CORD
STB5V
STB3.3V
PWM CONTROL
BL_ON
LED BACK LIGHT
STB5.8V
SUB_ON
SD CARD DATA
P1
DIGITAL
SUB1.8V
GAMMA DAC
PC
AVDD12.6V
A14
RELAY
KA10
SPDIF
P15V
STB5.8V
HDMI3.3V
AUDIO
SUB3.3V
SOUND SOS
sLD2
AUDIO OUT
AMP
L
R
AUDIO
SPEAKER(R)
SPEAKER(L)
A12
PWM
PWM
SOUND SOS
SOS_
SENCE
TCON SOS
SOS_SENCE
(LED:4 TIMES)
(LED:9 TIMES)
(LED:7 TIMES)
(LED:1 TIME)
(LED:3 TIMES)
ARC
TX-LR37U3
31
10 Wiring Connection Diagram
10.1. Wire Dressing Layout
1. Connect all wire connector to connector.
2. Dressing wire follow diagram.
2. Dressing wire follow diagram.
Wire
Clamper
(HB) FELT TMK4GA041
1
2
3
4
5
6
7
8
No.1 P2 - A09
No.2 A02 - GK01
No.3 A10 - KA10
No.4 A12 - SP (L)
No.5 A12 - SP (R)
TX-LR37U3
32
11 Schematic Diagram
11.1. Schematic Diagram Notes
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