Panasonic PT-TW343RE Service Manual ▷ View online
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Control Port Functions
Serial terminal I/O port functions (PW878)
PIN NO.
PORT NO.
Signal Name
Description
I/O
U18
PORTA0
EXTINT1
PHY break
O
T16
PORTA2
RST_RJ45
RJ45 network processing port is reset, low level is reset
O
R16
PORTA3
MONIT_OUT
Switch VGA2 input/output status: 0_input, 1_output
O
T17
PORTA4
IRIS_CW
IRIS direction control
O
R17
PORTA5
P_KEY
On/Off button input port
I
T18
PORTA6
IRIS_RST
IRIS reset control
O
R18
PORTA7
IRIS_CLK
IRIS clock control
O
B22
PORTB0
OEFID_IN
LVDS input selection
O
F19
PORTB1
KEY_GPIO9
Android module control
O
D20
PORTB3
GPIO9
Android module control
O
A22
PORTB4
MCU_HPD0
HDMI hot plug control
O
M6
INR4
ON_2_5V
PWC878_2.5V voltage enabled, high level effective
O
M1
INR6
CXD_MUTE
Close input
O
M5
INR7
OUT_DET_EXT
AUDIO_OUT check
I
K4
INR9
LAMP_ECO
LAMP mode check
I
L2
ING2
TEMP_LED
Warning status LED
O
K3
ING3
POWER_LED_PW
Power indicator control
O
J4
ING4
READY_LED_PW
Ready indicator status
O
L1
ING5
LAMP_EN
Lamplighter enabled
O
K6
ING6
LAMP_S
Lamplighter control status
O
K2
ING7
USB_HUB_EN
USB HUB enabled
O
J5
ING9
MCU_HDMI
HDMI EDID write-in control (H:write. L: protection)
O
J1
INB2
ON_1_8V
PWC878 1.8V voltage enabled, high level effective
O
H4
INB3
ON_1_0V
PWC878 1.0V voltage enabled, high level effective
O
H6
INB4
FANC_SW
Group C fan voltage control, high level, voltage output
O
H3
INB5
ON_3_3V
PWC878 3.3V voltage enabled, high level effective
O
H2
INB6
ON_15V
CXA3828_15V voltage enabled, high level effective
O
H5
INB7
FAN_SW
Fan voltage control, high level, voltage output
O
G2
INB9
ON_16V
-5V power enabled, high level enabled
O
M3
INR0
P_OE
PT2830 control (L:MUTE, H:active)
O
L5
INR1
ROM_WP
IC1013 write protection control
O
K5
ING0
MOTOR_POWER
IRIS power supply enabled
O
J3
INB0
ON_5V
USB 5V control, high level effective
O
J2
INB1
ON_1.0V_PW
Control PW878's 1V voltage. H: active
O
U19
PORTI0
GPIOA0_4
External Android board control interface
O
V20
PORTI1
GPIOA0_9
External Android board control interface
O
W21
PORTI3
LAMP_EN_SEL
Point-to-signal control
O
U20
PORTI4
IRIS_DET
IRIS detection
I
W22
PORTI5
AUDIO_POWER
AUDIO power enabling port (H: ACTIVE)
O
V21
PORTI6
GPIOA0_5
Android board control interface
O
D12
PORTJ0
RC_SEL_FRONT
Enable front remote control
O
A13
PORTJ1
RC_SEL_BEHIND
Enable rear remote control
O
D11
PORTJ2
RST_GAM
Initialize CXD3551
O
B12
PORTJ3
TC_XCLR
Initialize CXDA3828
O
C11
PORTJ4
SD_MCU
Amplifier SD enabled (L: MUTE,H:ACTIVE)
O
E11
PORTJ5
VDDMNT
CXA3828 drive voltage switch control
O
F11
PORTJ6
PS
POWER OR VCOMRGB SW
O
A12
PORTJ7
IRIS_STBY
IRIS standby control
O
DIA-1
Schematic Diagram
CONTENTS
Schematic Diagram
Model No. PT-TW343R
SCHEMATIC DIAGRAM
1. Schematic Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .DIA-2
1.1. A-P.C. Board (1/2)
1.2. A-P.C. Board (2/2)
1.4. Iris motor-P.C. Board
1.3. Connent-P.C. Board
1.5. Iris-P.C. Board
1.6. RC-P.C. Board
1.7. Temp-P.C. Board
1.8. P-P.C. Board
1.2. A-P.C. Board (2/2)
1.4. Iris motor-P.C. Board
1.3. Connent-P.C. Board
1.5. Iris-P.C. Board
1.6. RC-P.C. Board
1.7. Temp-P.C. Board
1.8. P-P.C. Board
2. Circuit Boards Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .DIA-5
2.1. A-P.C. Board <A side>
2.1. A-P.C. Board <B side>
2.2. P-P.C. Board
2.3. RC-P.C. Board
2.4. Sensor-P.C. Board
2.5. Connect-P.C. Board
2.6. Iris-P.C. Board
2.7. Filter-P.C. Board
2.8. Iris motor-P.C. Board
2.9. Back RC-P.C. Board
2.1. A-P.C. Board <B side>
2.2. P-P.C. Board
2.3. RC-P.C. Board
2.4. Sensor-P.C. Board
2.5. Connect-P.C. Board
2.6. Iris-P.C. Board
2.7. Filter-P.C. Board
2.8. Iris motor-P.C. Board
2.9. Back RC-P.C. Board
Components identified by the international symbol
have special characteristics important for safety.
When replacing any of these components, use only the manufacturer's specified ones.
Important Safety Notice
■ Notes
1. Resistor
All the resistors are carbon 1/4W resistors, unless marked as follows.
The unit of resistance is an OHM [Ω] (K=1 000 M=1 000000).
: Nonflammable
All the resistors are carbon 1/4W resistors, unless marked as follows.
The unit of resistance is an OHM [Ω] (K=1 000 M=1 000000).
: Nonflammable
: Metal Oxide
: Solid
: Metal Film
: Wire Wound
: Fuse
2. Capacitor
: Temperature Compensation
: Temperature Compensation
: Electrolytic
: Polyester
: Bipolar
: Metallized Polyester
: Dipped Tantalum
: Polypropylene
: Z-Type
3. Coil
The unit of inductance is a H, unless otherwise noted.
4. Test Point
: Test Point
5. HOT and COLD indications
The power circuit board contains a circuit area using a separate power supply to isolate the ground connection.
The circuit is defined by HOT and COLD indications in the schematic diagram. Take the precautions below:
6. This schematic diagram is the latest at the time of printing and the subject to change without notice.
The unit of inductance is a H, unless otherwise noted.
4. Test Point
: Test Point
5. HOT and COLD indications
The power circuit board contains a circuit area using a separate power supply to isolate the ground connection.
The circuit is defined by HOT and COLD indications in the schematic diagram. Take the precautions below:
6. This schematic diagram is the latest at the time of printing and the subject to change without notice.
■ Precautions
1. NEVER touch the HOT part or the HOT and COLD parts at the same time, or you may get an electric shock.
2. NEVER short-circuit the HOT and COLD circuits, or the fuse may blow and the parts may break.
3. NEVER connect an instrument such oscilloscope to the HOT and COLD circuit simultaneously, or the fuse may blow.
2. NEVER short-circuit the HOT and COLD circuits, or the fuse may blow and the parts may break.
3. NEVER connect an instrument such oscilloscope to the HOT and COLD circuit simultaneously, or the fuse may blow.
Connect the ground of instruments to the ground of the circuit being measured.
4. MAKE SURE to unplug the power cord from the power outlet before removing the chassis.
5. Be sure to make your orders of replacement parts according to parts list section.
5. Be sure to make your orders of replacement parts according to parts list section.
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