Panasonic TH-R50EL8R Service Manual / Other ▷ View online
24
8 Measurements and Adjustments
8.1.
Adjustment Procedure
8.1.1.
Driver Set-up
8.1.1.1.
Item / Preparation
1. Input a white signal to plasma video input.
2. Set the picture controls as follows.
2. Set the picture controls as follows.
Picture menu: Dynamic
PNR: OFF
Aspect: 16:9
PNR: OFF
Aspect: 16:9
Caution
1. First perform Vsus adjustment.
2. Confirmation of Vscn voltage should be performed after
2. Confirmation of Vscn voltage should be performed after
confirmation of Vad adjustment.
When Vad=-149V, Voltage of Vscn is -4V ±4V.
When Vad=-149V, Voltage of Vscn is -4V ±4V.
8.1.1.2.
Adjustments
Adjust driver section voltages referring the panel data on the
panel data label.
Check or adjust the following voltages with the multimeter.
panel data label.
Check or adjust the following voltages with the multimeter.
*See the Panel label.
8.1.2.
P.C.B. (Printed Circuit Board) exchange
8.1.2.1.
Caution
1. To remove P.C.B. , wait 1 minute after power was off for discharge from electrolysis capacitors.
8.1.2.2.
Quick adjustment after P.C.B. exchange
Adjust the following voltages with the multimeter.
*See the Panel label.
Caution:
Caution:
Absolutely do not reduce Vsus below Ve not to damage the P.C.B.
Name
Test Point
Voltage
Volume
Remarks
Vsus
TPVSUS
(SS)
(SS)
Vsus ± 2V
R628 (P)
*
Ve
TPVE (SS)
Ve ± 1V
VR16000
(SS)
(SS)
*
Vset
TPVSET
(SC)
(SC)
320V +7V, -9V
Fixed
Vad
TPVAD (SC) -149V ± 1V
VR16600
(SC)
(SC)
Vscn
TPVSCN
(SC)
(SC)
Vad+145V ± 4V Fixed
Vda
TPVDA (SS) 75V + 1V, -2V
Fixed
P.C.B.
Name
Test Point
Voltage
Volume
Remarks
P Board
Vsus
TPVSUS (SS)
Vsus ± 2V
R628 (P)
*
SC Board
Vad
TPVAD (SC)
-149V ± 1V
VR16600 (SC)
SS Board
Ve
TPVE (SS)
Ve ± 1V
VR16000 (SS)
*
25
8.1.3.
Adjustment Volume Location
8.1.4.
Test Point Location
26
27
9 Block Diagram
9.1.
Block Diagram (1/5)
A7
HDMI2
HDMI Rx
A/D CONV.
A/D CONV.
HDMI1
A1
SD CARD I/F
+3.3V(S)
K
GS52
A52
LED/RMT
REMOTE
RESET
LED
L,R
+3.3V(STB)
+5V(S)
+3.3V(S)
G51
Y,PB,PR
HP
DIGITAL
AUDIO
OUT
AUDIO
OUT
PWM
AUDIO AMP
Dig/Ana
Tuner
Tuner
MONITOR L,R
+1.8V(S)
SUB+3.3V
SIF,AM
SUB+1.2V
HP L/R
+3.3V(S)
DTV
DCDC
KEY1
+15V(S)
KEY SCAN
DCDC
+1.2V(S)
SUB+1.8V
FRONT TERMINAL
Y,C,V
IECOUT
R_LED_ON
STANDBY MPU
SD CARD SLOT
G
COMP
GS
A51
from
L,R
P6, P7
K1
SD BOOT
SBO2
SBI2
SBI2
(MAIN MPU+VIDEO PROCESSOR)
Peaks Lite2p
+3.3V(STB)
GenX5
+5V(S)
RESET
REMOTE
EEPROM
SOUND+15V
SOUND_SOS
BT+30V
+30V(BT)
+9V(P)
KEY
L,R
Y,C,V
OPT
HDMI
L,R
RF
A12
AV3
VIDEO
AUDIO
SWITCH
AUDIO
SWITCH
HEADPHONE
AV1
AUDIO
PROCESSOR
PROCESSOR
SPEAKER(R)
SOUND SOS
AV2
SPEAKER(L)
Y,C,V
PANEL_STB_ON
PANEL SIDE SOS
PANEL_STATUS
SOUND SOS DET
DIGITAL MAIN
A
SD DATA
DTV
IEC OUT
Digital Video Signal
LVDS
SERIAL
L,R
Y,C,V
RESET
IIC1
DDR
+5V(P)
+3.3V(P) DET
MAIN ON/OFF
POWER SOS
+3.3VSTB)
CPG with SS
FLASH
MEMORY
MEMORY
+5V(P)
SUSTAIN CONTROL
+15V(P) DET
+5V(STB)
A32
+15V(P)
POWER_SOS
+15V(P)
A25
MPU
DCDC
DCDC
Plasma AI
H/V Sync Control
+5V(P)
+1.2V(P)
Sub Filed Processor
+3.3V(P)
+5V(P) DET
+3.3V(P)
+1.2V(P)
SOS6_SC1
P
ANEL ST
A
TUS
EEPROM
+2.5V(P)
Ready
,ALARM
+3.3V(STB)
SOS8_SS
SOS7_SC2
+2.5V(P)
DCDC
LVDS Rx
P
ANEL STB_ON
LVDS
FPGA
+3.3V(P)
VIDEO DATA
+15V(P)
SOS8_SS
A31
+5V(P)
VIDEO DATA
+5V(P)
+15V(P)
A20
to/from
P25
to
C11
to/from
C21
+5V(STB)
+15V(F_STB)
+15V(SOUND)
SC20
to/from
SCAN CONTR
OL
L,R
ALL OFF
DDR2
CLOCK GEN
+3.3V(M)
SUB+5V SENSE
+5V(S)
SUB+5V SENSE
MAIN+3.3V SENSE
MAIN+9V SENSE
+9V(M)
+3.3V(S)
DTV+9V SENSE
+9V(S)
Thermal
sensor
sensor
OFDM
IFD1/2
L,R
(ATV or DTV)
(ATV or DTV)
MONITOR
OUT
OUT
G_LED_ON
PD2-M
Dischrge Control
Genx6
DVB_CVBS
Digital
FOR FACTORY USE
A33
A35
FOR FACTORY USE
A34
FOR FACTORY USE
BA/EA ONLY
CI SLOT
BUFFER
HSDIN
TS Parallel
TS Parallel
EEPROM
(LED
11TIMES)
(LED
12TIMES)
(LED
3TIMES)
(LED
7TIMES)
(LED
5TIMES)
(LED
8TIMES)
(LED
2TIMES)
(LED
6TIMES)
(LED
4TIMES)
TH-50PV8PA, PX8BA/EA
Block (1/5) Diagram
TH-50PV8PA, PX8BA/EA
Block (1/5) Diagram
Block (1/5) Diagram
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