Panasonic TH-46PY8P / TH-46PZ8B / TH-46PZ8E Service Manual ▷ View online
26
8.1.2.
Initialization Pulse Adjust
1. Input the 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
3. Connect Oscilloscope to TPSC1 (SC).
Check the voltage (T2) at 100 us period on the down slop.
8.1.3.
P.C.B. (Printed Circuit Board) exchange
8.1.3.1.
Caution
1. To remove P.C.B. , wait 1 minute after power was off for discharge from electrolysis capacitors.
8.1.3.2.
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.
Test point
Volume
Level
T2
TPSC1 (SC)
VR16602 (SC)
250 V ± 10 V
P.C.B.
Name
Test Point
Voltage
Volume
Remarks
P Board
Vsus
TPVSUS (SS)
Vsus ± 2V
VR251 (P)
*
SC Board
Vad
TPVAD (SC)
-140V ± 1V
VR16600 (SC)
SS Board
Ve
TPVE (SS)
Ve ± 1V
VR16000 (SS)
*
A, D Board
White balance and Sub brightness for NTSC, PAL, HD, PC and 625i signals
27
8.1.4.
Adjustment Volume Location
8.1.5.
Test Point Location
28
29
9 Block Diagram
9.1.
Block Diagram (1/6)
SIF,AM
+5V(S)
DCDC
SPEAKER(L)
+1.8V(S)
+3.3V(S)
PB33
PB
L,R
A5
RESET
+9/7.2V
P6
+5V(STB)
AUDIO SW
+15V(FAN)
PB30
+3.3V(S)
K1
DCDC
FRONT TERMINAL
POWER LED(R)
+30V(BT)
SOUND SOS
FAN POWER
Y,C,V
SD CARD
CIRCUIT
SD CARD DATA
SOUND SOS DET
CIRCUIT
CIRCUIT
SUB+3.3V
SOUND
PWM AUDIO OUT
A8
DTV AUDIO
FAN CONT
10bit A/D
SBO2
SBI2
SBI2
+3.3V(S)
CLOCK GEN
GS52
IIC1
GS
+3.3V(S)
DCDC
+3.3V(STB)
to D5
SUB+3.3V DET
+9V(P)
G
A52
SUB+5V DET
A51
DIGITAL VIDEO DATA
SUB+5V
PROCESSOR
EEPROM
AI SENSOR
BT+30V
+9V(S)
Peaks Lite2
SUB+1.8V
Y,C,V
RESET
HDMI AUDIO
FRONT END
PROCESSOR
PROCESSOR
PB32
MONITOR
L,R
L,R
KEY SWITCH
KEYSCAN1
A1
A3
A7
HDMI2
AV3
DTV_V
F+15V
FAN CONTROL
CH0 DATA
FAN SOS
+15V(SND)
HDMI1
DIGITAL SIGNAL PROCESSOR
POWER LED
REMOTE
RECEIVER
RECEIVER
V
to D3
AUDIO AMP
PANEL STB_ON
SD BOOT
CH0 DATA
REMOTE IN
L,R
KEY SWITCH
FAN SOS DET
DCDC
OPTICAL OUT
G51
REMOTE RECEIVER
A12
SOUND SOS
HDMI I/F
RECEIVER
RECEIVER
F+15V
K
L,R
DTV AUDIO
PB31
PANEL STATUS
from
VIDEO SW
SLOT
+3.3V(STB)
SUB+1.2V
RESET
DDR2
STB MCU
FAN_A-D
A
SUB+9V
TUNER
A6
+1.2V(S)
FAN SOS
GenX5
+15V(S)
+15V(FAN)
SD CARD DATA
SPEAKER(R)
LED
PAMEL SOS
from P7
AI SENSOR
+15V(FAN)
+15V(SND)
SUB+9V DET
SD CARD SLOT
+5V(S)
+9V(S)
FAN CONT
PB8
ALL OFF
OPTICAL OUT
+5V(S)
+5V(S)
AI SENSOR
HEADPHONE
HP_L,R
HP_L,R
Y,PB,PR
L,R
Y,C,V
AV1
AV2
Y,C,V
L,R
L,R
COMP
LVDS DATA
MIHO
Local 16bit OSD
RGB_30bit
LOSD OUT
(for HQ1)
(for HQ1)
B/E ONLY
CI SLOT
BUFFER
HSDIN
TS Parallel
TS Parallel
EEPROM
FLASH
MONITOR L,R
MONITOR
OUT
OUT
FRC+3.3V
FRC+1V
DCDC
+1V(FRC)
DCDC
DCDC
FRC+2.5V
DCDC
FRC+2.6V
+2.5V(FRC)
+2.6V(FRC)
+30V(BT)
TUNER SOS DET
CIRCUIT
CIRCUIT
+9V(S)
+5V(S)
TUNER SOS
+3.3V(FHD)
FHD+3.3V
DCDC
+5V(S)
+1.2V(MIHO)
MIHO+1.2V
DCDC
+3.3V(FHD)
(LED:12 TIMES)
(LED:11 TIMES)
(LED:12 TIMES)
(LED:10 TIMES)
(LED:10 TIMES)
TH-46PY8P, PZ8B/E
Block (1/6) Diagram
Block (1/6) Diagram
TH-46PY8P, PZ8B/E
Block (1/6) Diagram
Block (1/6) Diagram
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