Panasonic TX-LR42E6 Service Manual ▷ View online
TX-LR42E6
25
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 load and check the satisfaction with the specified voltage as following table.
Power Supply Name
Measurement Point
Specification
PANEL12V
TP4000 / 4001
11.50V - 12.50V
SUB5V
TP5420
4.95V - 5.40V
SUB3.3V
TP5400
3.17V - 3.43V
SUB1.8V
TP8714
1.70V - 1.90V
Only TNPH1038
SUB1.5V
TP8100
1.435V - 1.585V
SUB1.2V
TP8101
1.140V - 1.260V
LNB_PWR
TP6702
15.30V - 17.10V
Only JPN_Model
JP_TU_2.5V
TP5705
2.38V - 2.62V
DMD_1.2/1.1V
TP5702
1.14V - 1.26V
Only JPN_Model
DMD_1.2/1.1V
TP5703
1.14V - 1.26V
Only DTMB_Model
Output
Test Point
Step 1
Step 2
24V
TP7407
< 1V
24 ± 1.2V
16V
TP7410
< 1V
15.7 ± 0.6V
5VS
TP7501
5.3 ± 0.2V
5.3 ± 0.2 V
PFC
TP7201 or TP7202
< 340V
390V ± 15V
*HOT
TX-LR42E6
26
9 Block Diagram
9.1.
Main Block Diagram
(L
E
D
:1
T
IM
E
)
(L E D :9 T IM E S )
(LED:1 TIME)
(LED:9 TIMES)
PNL12V
SUB5V
SUB1.5V
AVDDH3.3V
SUB3.3V
REG
K10
BL_PWM
STB5V
WiFi
LVDS Tx
TMDS DATA
USB I/F
CI IF
LED/RM/CATS
DCDC
TMDS DATA
5VS
INPUT
FILTER
OVP DET
SUB1.2V
BL_ON
TU_1.8V
STB3.3V
SUB3.3V
A20
STB5V
PANEL12V
P2
POWER
Paragon
L/R
SUB5V
SUB_ON
STB3.3V
DCDC
HDMI
I/F
SUB1.5V
CI DATA
REMOTE IN
DCDC
P
IFD_OUT
SUB5V
Y/PB/PR
HDMI3.3V
KEY
SUB1.5
BL_SOS
POWER_ON
L/R IN
USB5V
USB2
REMOTE RECEIVER
SUB1.2V
A16
SUB_AI_3.3V
SUB3.3V
SPDIF_OUT
P15V
MAIN
SLOT
AC
DETECT
ETHERNET
KEY
SUB5V
DDR3
STB3.3V
POWER ON
PNL12V
ANALOG-ASIC
BL_PWM
ARC
SUB1.2V
Parallel_TS
HDMI1
ARC_OUT
SUB1.2V
A10
JK7101
ETHER I/F
STB3.3V
P15V
OUT
SUB3.3V
POWER_ON
CI
DCDC
NEUTRAL
SWITCH
LIVE
TMDS DATA
BL_ON
USB1
TS I/F
SUB_ON
NAND
FLASH
C.A.T.S. SENSOR
AC CORD
DCDC
LED BACK LIGHT
P15V
HDMI3
DIGITAL
A
TUNER
KEY
GK4
LED_R/G
SUB_AI_3.3V
BL_SOS
SUB3.3V
LLC
CONVERTER
K
DCDC
SUB1.5V
BL_ON
TU_1.8V
AUDIO
POWER SW
HDMI2
24V
BL_SOS
PANEL
COMPONENT IN
CVBS IN
BL_PWM
CI
POWER
Circuit
LCD DRIVER
DCDC
DDR_I/F
AV
P15V
LED_R/G
16V
CONTROL PANEL KEY
GK
NAND_I/F
SUB_ON
DVB-T2
P4
SUB_ON
DMD
A02
PFC
SUB5V/USB5V
LCD PANEL
C.A.T.S. SENSOR
AUDIO_OUT
SOUND_SOS
SOUND_SOS
SCART
L/R
V/Y/PB/PR
L/R IN
COMPONENT IN
CVBS IN
AUDIO
AMP
AUDIO
SPEAKER(R)
AMP
R
A12
SPEAKER(L)
L
V_OUT
L/R_OUT
L/R
HP L/R
HP
AMP
HP
SCART L/R OUT
SCART CVBS OUT
P5
TX-LR42E6
27
9.2.
Detailed Block Diagram (1/2)
NO HOLDER
C O L D
H O T
POWER_ON
KEY
BL_SOS
BL_PWM
BL_ON
BL_PWM
KEY
SUB_ON
BL_PWM
POWER_ON
BL_ON
BL_ON
BL_SOS
BL_SOS
POWER_ON
KEY
SW2857
5.8VS
TP0005
**
F7101
DCDCIN
PNL12V
D7401,02
TP0002
P15V
D7408,09
SUB5V
P15V
STB5V
TP0001
PA7402
TP0003
P15V
SUB3.3V
TP0004
PA7406
P15V
PA7401
T7202,
Q7201
+24V
LVDS_DATA
PANEL_VCC_ON
+16V
USB5V
BL_PWM
6
LCD PANEL
DCDCEN2
4
Q7403
R
P4
POWER SW
IC5300
1
P2
11
PHOTO
COUPLER
11
IC8705
CONTROL PANEL KEY
8
SRV_5V
PNL12V
PHOTO
COUPLER
1
CF7101
40
Q7402
MAIN
7
8
P
POWER
7
9
2
SRV_USB5V
SUB5V
6
PB
AC CORD
KEY
+12V
1
A16
PANEL12V
LCD
DRIVER
SRV_15V
1
A
1
RECTIFIER
4
2
STB5V
PR
+24V
5VS
LLC
CONVERTER
+3.3V
PC7303
POWER ON
2
4
GK
JK7101
KEY,Power SW
SRV_12V
PFC
SW2851-2855
IC7401
+5V
8
3
12
LF7103
LF7104
LF7105
L
3
2
PC7301
SUB_ON
11
+16V
9
8
+5V
5
T7302
3
3
3
10
LINE
FILTER
PHOTO
COUPLER
D7106
10
2
GK4
5
+16V
BL_ON
AV
AC
DETECT
2
Y
12
A02
BL_SOS
LVDS_DATA
10
13
6
SUB3.3V
LED DRIVE
SRV_3.3V
IC8704
ERROR
DETCT
Q7301,
Q7302
IC7503
11
1
PC7302
IC7301
JK3101A
IC7201
CF7102
P5
R
SCART
Y
L
PB
JK3002
R_OUT
L_OUT
PR
V
V_OUT
IC3300
3
4
AUDIO
AMP
COLD
HOT
TX-LR42E6
28
9.3.
Detailed Block Diagram (2/2)
G
R
VCC
GND
OUT
(L
E
D
:9 T
IM
ES)
(LE
D
:1
T
IM
E)
PWM_EN
POWER_ON
AI_SENSOR
REMOTE
R_LED_ON
R_LED_ON
BL_ON
SUB_ON
KEY
REMOTE
AI_SENSOR
P_PWMA
G_LED_ON
G_LED_ON
BL_SOS
X6800
SN2800
P15V
SUB3.3V
D5178
STB3.3V
D5187
SUB1.2V
D2802
SUB3.3V
SUB1.5V
D5173
SUB3.3V
SUB5V
SUB5V
P15V
RM2800
1
2
3
X8300
D5188
STB5V
SUB5V
P15V
D5179
D5191
STB5V
D5172
AVDDH3.3V
SUB3.3V
SUB3.3V
COMPONENT IN
CVBS IN
SOUND_SOS_DET
PANEL_PWM
ETHER_I/F
DDR_I/F
+5V
AI_SENSOR
1
ETHERNET
5
SUB_ON
A
JK8400
IIC_2
+1.5V
41MHz
IIC_2
DDC1
HDMI1
1.2V
HDMI_5V_DET2
IFD2
IIC_0
IIC_2
UART
IC8605
P15V
SUB3.3V
AUDIO_OUT
DDC IIC0
TS I/F
OVP
RF IN
IFD1
PWM_A_IN
CI DATA
USB_I/F
HDMI_CEC
Rx1
WiFi
6
6
11
ARC_OUT
DDC IIC3
LVDS_Tx
DCDCEN2
9
PWM_A_OUT
IIC_2
DDC3
TMDS DATA/ CLOCK
C.A.T.S.
SENSOR
FE_XRST
G_LED_ON
Rx3
+1.2V
IC8602
JK8602
4
1
VBUS2
CN0100
P_PWMA
HDMI_CEC
+3.3V
FE_XRST
5
SUB5V
Rx2
JK8601
Paragon
Reset
Circuit
JK8650A
SUB_AI_3.3V
IC5704
R_LED_ON
IC8100
DDR3
A10
HDMI_5V_DET1
TUNER
3
PWM_EN
AGC1
DDC2
BL_PWM
TMDS DATA/ CLOCK
8
USB_I/F
+1.8V
CATS_EYE
USB1
1
7
HDMI_CEC
PANEL_VCC_ON
USB_I/F
DMD_
1.2V
HDMI3.3V
IEC_OUT
POWER_ON
REMOTE
RECEIVER
IC6800
LVDS_DATA
BL_SOS
2
HDMI3
5
JK4702
MAIN
27MHz
TU6705
DIGITAL
AUDIO OUT
6
IC8200
PWM_POWON
JK4703
PANEL_3D_ON
REMOTE
LATCH
POWER LED/REMOTE RECEIVER/C.A.T.S. SENSOR
R_LED_ON
AGC1
IFD
SUB_ON
HDMI2
DCDCEN
IC5203
KEY
PANEL_3D_ON
DCDC_CTL
TU_1.8V
Q5740.41
IC8000
SUB1.5V
OVP_DET
JK4701
VBUS1
G_LED_ON
IC8706
K
POWER LED
PWM_EN
7
CI I/F
NAND_IF
+5V
IC5000
SUB_ON
A20
RM_IN
IC8201
IC8101
IIC_0
USB2
Paragon
AGC2
IC8603
TU_3.3V
BL_ON
FE_XRST
CEC
3
10
SUB1.2V
FOR
FACTORY
USE
UART
DDC IIC1
4
ANALOG-ASIC
POWER_DET
CI SLOT
STB3.3V
NAND
FLASH
IIC_0
DEMODULATOR
AGC
SUB3.3V
L/R IN
XRST
IC8900
DVB-T2
HDMI_5V_DET3
IC5702
K10
VBUS3
+5V
PANEL_VCC_ON
TMDS DATA/ CLOCK
STB3.3V
UART
IIC_2
STB5V
STB3.3V
D3201
7
A12
SDIN
15V
SPEAKER_L
3
L(-)
2
R(+)
R(-)
L(+)
AUDIO AMP
SPEAKER_R
1
SOS
IC4900
4
HP_OUT
HP AMP
IC3301
JK3202
HP
IC8400
CI_POWER_ON
SCART R/G/B IN
CVBS IN/OUT
SCART L/R IN/OUT
4
3
(LED:9 TIMES)
(LED:1 TIME)
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