Panasonic TX-P46U20E / TX-PR46U20 Service Manual ▷ View online
33
10.1.3. White balance adjustment
Name of measuring instrument
Connection
Remarks
W/ B pattern
Color analyzer
(Minolta CA-100 or equivalent)
Color analyzer
(Minolta CA-100 or equivalent)
Panel surface
Steps
Remarks
• Make sure the front panel to be used on the final set is fitted.
• Make sure a color signal is not being shown before adjustment.
• Put the color analyzer where there is little colour variation.
• Make sure a color signal is not being shown before adjustment.
• Put the color analyzer where there is little colour variation.
Picture menu : Dynamic
ASPECT : 16:9
ASPECT : 16:9
Adjustment
Remarks
1. Enter the service mode.
Please receive the external signal. Or, please select CVBS/YUV (no sync).
2. A number key [1] or [2] are operated and [WB-ADJ] is displayed.
Check that the color balance is [ COOL ].
3. A number key [0] is operated and select [METHOD].
4. A number key [5] is operated and [INNER PATTERN] is displayed.
4. A number key [5] is operated and [INNER PATTERN] is displayed.
5. Select [G-CUTOFF] item, using the number-key [3] or [4], and set to [80], using the vol-
ume-key [+] or [-].
Also, [B-CUTOFF] and [R-CUTOFF] set to [80]
Also, [B-CUTOFF] and [R-CUTOFF] set to [80]
6. Set [G-DRIVE] at [D0].
7. Touch the signal receiver of color analyzer to the INNER PATTERN's center, and adjust B
7. Touch the signal receiver of color analyzer to the INNER PATTERN's center, and adjust B
drive and R drive so x, y become the [COLOR TEMP COOL] in the below table1.
8. All RGB drive increase so that the maximum drive value of RGB may become [FF].
([ALL-DRIVE] set to [FF].)
9. Set color balance to [NORMAL] using [7] key.
10. Fix G-CUTOFF, B-CUTOFF and R-CUTOFF at [80].
11. Set [G-DRIVE] at [D0].
12. Adjust B-DRIVE and R-DRIVE so the INNER PATTERN’s x, y become the [COLOR
TEMP NORMAL] in the below table1.
13. All RGB drive increase so that the maximum drive value of RGB may become [FF].
([ALL-DRIVE] set to [FF].)
14. Set color balance to [WARM] using [7] key.
15. Fix G-CUTOFF, B-CUTOFF and R-CUTOFF at [80].
16. Set [G-DRIVE] at [D0].
17. Adjust B-DRIVE and R-DRIVE so the INNER PATTERN’s x, y become the [COLOR
15. Fix G-CUTOFF, B-CUTOFF and R-CUTOFF at [80].
16. Set [G-DRIVE] at [D0].
17. Adjust B-DRIVE and R-DRIVE so the INNER PATTERN’s x, y become the [COLOR
TEMP WARM] in the below table1.
18. All RGB drive increase so that the maximum drive value of RGB may become [FF].
([ALL-DRIVE] set to [FF].)
METHOD=01
copy adjustments
copy adjustments
34
35
11 Block Diagram
11.1. Main Block Diagram
ON/OFF CONTROL
(LED:6TIMES)
(LED:4TIME)
COLD
HOT
(LED:8TIME)
(LED:7TIMES)
P7
P+15V
DATA
DRIVER
P11
SC46
DATA
DRIVER
VSUS
MAIN SW1
SCAN OUT (LOWER)
SCAN
DRIVER
VSUS
C25
SOS6_SC1
C23
SOUND15V
SUSTAIN CONTROL
STB5V
F15V
SUSTAIN CONTROL
P34
SS33
CONTROL
PULSE
P+15V
C2
P+3.3V,P+5V
P+3.3V
(LOWER)
P2
DATA DRIVER (LEFT)
DATA
DRIVER
VAD GEN.
DATA
DRIVER
VSUS GEN.
RECTIFIER
VIDEO DATA
SS24
SOS8_SS
C20
SC20
SCAN CONTROL
SUSTAIN DRIVE
P
Vda
DATA
DRIVER
SOS8_SS
P+3.3V
P+5V
P+15V
P+5V
VE GEN.
P+3.3V
SCAN DRIVE
P+5V
SC-BOARD
FLOATING PART
SOS DETECT
DATA
DRIVER
MAIN SW2
VSUS
VSUS
Vda
P35
Vda
SS-BOARD
SOS DETECT
SC2
SU
POWER SUPPLY
VIDEO DATA
VIDEO DATA
P-BOARD
SOS DETECT
SU41
SUSTAIN
SD46
DATA
DRIVER
DATA DRIVER (RIGHT)
Vda
SCAN OUT (UPPER)
SC42
SC41
STANDBY
VOLTAGE
RECTIFIER
SS11
F15V
SS
VSET GEN.
POWER MICOM
C11
DATA
DRIVER
P6
PROCESS
VOLTAGE
RECTIFIER
AC CORD
SS2
SCAN
DRIVER
DATA
DRIVER
SS21
RELAY
RECTIFIER
STB5V
P+15V
SD
P+5V
CONNECTOR
VIDEO DATA
DATA
DRIVER
SC
C21
Vda
DATA
DRIVER
SC-BOARD
ENERGY RECOVERY
SOS DETECT
VSCAN GEN.
SU11
VSUS
DATA
DRIVER
PS SOS4
SUSTAIN
VOLTAGE
RECTIFIER
DATA
DRIVER
DATA
DRIVER
C1
SOS7_SC2
SD42
SUSTAIN CONTROL
ENERGY RECOVERY
P+5V
P+15V
VIDEO DATA
POWER
FACTOR
CONTROL
C10
BUFFER
P9
DATA
DRIVER
SD11
SOS8_SS
(LED:6TIMES)
(LED:4TIME)
COLD
HOT
(LED:8TIME)
(LED:7TIMES)
(LED:12TIMES)
(LED:12TIMES)
(LED:6TIMES)
(LED:5TIMES)
(LED:3TIMES)
(LED:8TIMES)
(LED:7TIMES)
(LED:4TIMES)
AV IN I/F
L/R OUT
R
NAND
FLASH
AV1,2
AV3
EEPROM
A32
VIDEO
DATA
L/R
DCDC
AUDIO
CI ASIC
VDAC OUT
DVB_RF
PWM L/R
PWM L/R
RGB_CVBS
A20
A6
STB1.2V
P+15V
P+5V
P+3.3V
SOUND SOS
VIDEO DATA
SOUND SOS DET
CIRCUIT
A7
F15V
V OUT
V/R/G/B
STB5V
SOUND15V
STB5V_M
P+3.3V,P+5V
P+1.2V
C.A.T.S SENSOR
P+1.2V
OPTICAL
V
SOS6_SC1
LVDS DATA
P+15V
SUB+3.3V DET
P+3.3V
K1
A31
SUSTAIN
CONTROL
REMOTE RECEIVER
SUB9V
P+5V
SUB9V
DCDC
DCDC
TUNER
RECEIVER
P+15V
AMP
HDMI1-2
SPEAKER(L)
CONT.
SOS6_SC1
A11
L/R
SUB1.8V
CI SLOT
STB3.3V
SD CARD DATA
L/R OUT
SUB5V
P+3.3V
SUB3.3V
P+3.3V DET
C.A.T.S SENSOR
DCDC
P+5V
HP L/R
POWER SOS
HEAD_
PHONE
L/R
K
SD CARD IF
IFD_OUT
SOS8_SS
OPTICAL AUDIO OUT
Parallel_
TS(FE)
PLASMA AI
CPG with SS
H/V Sync Control
Sub Filed Processor
Discharge Control
Parallel_
TS
P+3.3V
SCAN CONTROL
REMOTE RECEIVER
P+5V
Parallel_
TS(CI)
REMOTE IN
DCDC
TS I/F
HDMI I/F
P+5V DET
STB5V
SOS7_SC2
CPU BUS
EEPROM
SUB5.6V
STB3.3V
SUB1.2V
STB3.3V
PEAKS-sLD
F15V
V
L
MON_L/R
SD CARD
TV_L/R
OUT
AUDIO
SLOT
MON_L/R
TV_L/R
PD4H
Y/PR/PB
HP_L/R
C.A.T.S. SENSOR
HP_L/R
POWER LED
LED_R/G
CPU BUS
I/F
A1
PANEL MAIN ON
SUB3.3V
SUB+5V DET
DIGITAL SIGNAL PROCESSOR
ANALOG-ASIC
SUB+9V DET
SUB9V
SUB5V
SOS7_SC2
KEY SWITCH
P+3.3V
LED_R/G
SUB9V
SPEAKER(R)
SOS4_PS
KEYSCAN1
STB_D3.3V
AUDIO
STB_D3.3V
PANEL
MAIN ON
PANEL SOS
COMP
SUB1.2V
Y/PB/PR
SUB5V
PANEL SOS
SUB3.3V
SIF_OUT
DCDC
SOS8_SS
SIF I/F
SUB5.6V
TMDS DATA
MPU
OUT I/F
AM
ANALOG
A
OPTICAL OUT
OFDM
CI TS
SUB1.8V
DCDC
AV SW
DCDC
(LED:12TIMES)
(LED:12TIMES)
(LED:6TIMES)
(LED:5TIMES)
(LED:3TIMES)
(LED:8TIMES)
(LED:7TIMES)
(LED:4TIMES)
ON/OFF CONTROL
S1B
ON
POWER SWITCH
MAIN SW2
POWER SW
MAIN SW1
S
(LED:9TIMES) DCC SOS
(LED:9TIMES)
36
11.2. Block (1/4) Diagram
(LED:3TIMES)
(LED:5TIMES)
(LED:10TIMES)
(LED:12TIMES)
P
P
Q5603
D5602
Q5602
SOUND15V
SUB3.3V
SUB9V
STB5V
P+15V
SUB5V
SUB3.3V
SUB9V
STB5V
SOUND15V
P+3.3V
P+5V
SUB3.3V
F15V
SUB1.8V
SUB1.2V
P+15V
D5471
Q5471
D5472
STB3.3V
STB3.3V
P+15V
STB1.2V
FE1.2V
STB3.3V
SUB3.3V
SUB5V
F15V
X8001
X8000
D2014
SUB5.6V
SUB5.6V
AV3.3V
AV3.3V
SUB3.3V
PEAKS-sLD
F15V
LVDS DATA
3
7
F15V
2
SOUND15V
SD DATA:4bit
8
SD CARD I/F
SD CARD
JK8850
9
F15V
1
SOUND15V
V
P+15V
AV1
AV3
AV2
COMP
Y/PB/PR
F15V DET
ON/OFF
Y/PR/PB
L/R
IC3000
AV SW
ANT IN
TV_V
IIC_TU
TU2901A
TUNER
5V
VIDEO
AUDIO
AM
L/R
V
TV
A6
P6
SYS_IIC0
L(+)
OPTICAL
SPEAKER_R
IC2301
AUDIO
L_OUT
OPTICAL AUDIO OUT
SPEAKER_L
1
2
R(-)
L(-)
SPEAKER
15V
SPEAKER
R(+)
A11
AUDIO AMP
4
D3300
R_OUT
3
OUT
SOUND
SOS
DET
Q2301
PWM L/R
PWM L/R
SOS
JK4700
5VDET_1
HDMI_CEC
5VDET_0
HDMI_CEC
ARC
+5V
DDC_IIC0
RX0
RX1
DDC_IIC1
HDMI IN 1
TMDS DATA CLOCK
+5V
TMDS DATA CLOCK
DDC IIC
DDC IIC
HDMI_CEC_
IN_OUT
EEPROM
NAND
FLASH
CPU BUS I/F
IIC_IF
+5V
SUB5V
+3.3V
+1.2V
SUB1.2V
IC5600
+1.8V
SUB3.3V
IC5601
SUB1.8V
IC5401
9V
5V
9V
SUB1.2V
SUB1.8V
3.3V
SUB_SD_3.3V
AVDDH3.3V
AVDD3.3V
IC8921
AVDDH
IC5604
AVDD
IC5603
MAIN
Y/PR/PB
L/R
OSD I/F
IIC2
IIC0
IIC0
IIC1
IIC1
IIC2
IIC2
VCC
IC8001
SPDIF
LVDS_OUT
AV I/F
HDMI I/F RECEIVER
DIGITAL SIGNAL PROCESSOR
A
1
6
7
8
5
V/R/G/B
L/R
DTV_RST
DTV_XRST
TV SUB ON
KEYSCAN1
KEYSCAN1
REMOTE IN
PANEL SOS
XRST_SYS_PD4
POWER LED(R)
XRST_SYS_PD4
C.A.T.S
STB_RST
STB_RST
POWER LED(R)
REMOTE IN
PANEL MAIN ON
PANEL MAIN ON
SUB3.3V DET
SUB9V DET
SUB5V DET
TV SUB ON
PANEL SOS
P+5V DET
P+3.3V DET
GENX
IIC
GENX
IIC
EEPROM
IC1100
JK8940
CI SLOT
IC8401
CI ASIC
P7
STB5V_SW_ON
7
8
3
4
5
P_S0
PANEL_MAIN_ON
P_S1
SOS4_PS
STB5V
1
TV_SUB_ON
P_S0
P_S1
9
SOS4_PS
A7
TV_SUB_ON
STB5V_SW_ON
PANEL_MAIN_ON
IFD_OUT1
DIGITAL
DEMODULATOR
IC8300
IF_AGC
IIC_TU
IIC2
IC8302
OFDM
2.5V
IFD1
IF_AGC
IFD_OUT2
SIF_OUT
IFD2
IC8400
CI TS
CONT.
CONT.
SIF I/F
TS I/F
NRST
XRST
SUB3.3V
V/R/G/B
L/R
L/R
LO2_L/R
HP_L/R
LO1_L/R
MON_L/R
TV_L/R
AV1_VOUT
AV2_L/ROUT
AV2_VOUT
L/ROUT
AV1_L/ROUT
AUDIO
ANALOG
CPU BUS
Parallel_TS(FE)
Parallel_TS
Parallel_TS(CI_IN)
Parallel_TS(CI_OUT)
5V_CI
IC8402
C.A.T.S_SENSOR
IC8950
SOUND SOS
TV_SUB_ON
TNR5V
IC2953
SUB5V
SUB5V
ERROR DET
SUB9V
SUB5.6V
VOLTAGE
DROP
DROP
SUB9V
+5.6V
IC2870
SUB5.6V
SOS
SOS
SOS
MPU(GenX)
STB1.2V
STB3.3V
IC2950
1.2V
1.2V
TNR3.3V
3.3V
SUB5.6V
3
4
11
12
IC1000
TEMP SENSOR
IIC2
POWER_DET
SW_OFF_DET
POWER_DET
SW_OFF_DET
AV1_BLUE
AV1_VOUT
RIN
AV1_RIN
HP_R
AV1_LIN
PR
YPBPR
AV1_GREEN
PB
AV3_V
AV2_RED_C
AV2_VOUT
AV2_GREEN
LOUT
AV1_ROUT
AV2_QLINK
JK3302
Y
AV1_QLINK
AV2_LOUT
JK3100B
LIN
AV2_BLUE
AV1
AV1_LOUT
AV1_VIN
AV2_RIN
AUDIO
AV3
IN/OUT
AV1_RED
HP_L
AV2_LIN
AV2_ROUT
AV2_VIN
JK3107A
HEADPHONE
ROUT
AV2
QLINK1
QLINK2
V
V
RGB_CVBS
ANALOG
OUT I/F
CVBS
IN1
VDAC OUT
DVB_RF
12MHz
OSCX0
OSCXI
24.576MHz
AXO
AXI
AUDIO I/F
+5V
IC3001
G LED ON
G LED ON
CI POWER ON
CI POWER ON
CI POWER ON
P ON/OFF
P ON/OFF
TNR5V
TV_SUB_ON
TNR3.3V
IC2952
CI I/F
CI DATA
2
9
10
IIC1
(LED:3TIMES)
(LED:5TIMES)
(LED:10TIMES)
(LED:12TIMES)
ARC_OFF
JK4701
HDMI IN 2
Q4512
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