Service Manuals, User Guides, Schematic Diagrams or docs for : Samsung Projector SP-A400B Wiring Diagram
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CN102 C/W motor
DMD Board sensor board
CN101
CN103
140 Pin
6-1. Wiring Diagrams
(Refer to the Circuit
6. Wiring Diagrams
Diagrams)
WIRE
CN113 CN105
front IR board CONNECTOR
LED x 3 CN112
BOARD TO BOARD
CONNECTOR
Keypad CN111
MAIN Board
CN110
Cover detect
switch board CN110 Ballast board LAMP
Temp sensor
CN109
Light Effect
CN103 SMPS board Inlay
FAN x 3
6. Wiring Diagrams
6-1
Connect the DMD board to the Color wheel
6-2
DMD board Connect the IR board Lamp
6. Wiring Diagrams
6-1-1. Engine Part Wiring Diagram
Connect fan1
Connect the LED board
Connect the temperature detection sensor
Connect fan2 and fan3
Connect the ballast
Ballast: Operates the lamp
Connect the Main board and the DMD board
Connect the ballast to the SMPS
Connect the inlet to the SMPS
6-1-2. Circuit Part Wiring Diagram (Except for the Main board)
Main board
6. Wiring Diagrams
6-3
SMPS Light effect
Connect the ballast Connect the touch keypad Connect the LED board IConnect the IR board
6-4
Connect the cover detection switch
6. Wiring Diagrams
Connect the temperature detection sensor
6-1-3. Main Board Wiring Diagram
Connect the light effect Connect fan1, 2, and 3 Connect the SMPS
6. Wiring Diagrams
6-2. Connector Functions and their Connection Errors
Main Board
Connector Parts to Connect and Connection Error Symptoms
R Board: Transmits the signals received from the IR receiver to the digital board to operate the projector.
CN113 When a connection error occurs, the projector does not operate when using the remote control at the
front of the projector..
LED Board: Displays the projector operating status via the LED indicators.
CN112
When a connection error occurs, the LED indicators do not operate.
Touch Keypad: Transmits the signals received from users to the digital board to operate the projector.
CN111
When a connection error occurs, the Touch keypad does not operate.
Pin 1,2,3 Fan 1, 2, 3: Decreases the internal temperature of the projector. They turn the projector off when
Pin 4,5,6 the fan connections are abnormal.
Pin 7,8,9 When a connection error occurs, the Temp and Standby LEDs blink.
Light Effect: This is a light effect to the outside of the projector. It can be turned on or off
Pin 10,11 depending on the product settings.
When a connection error occurs, the Light Effect does not operate.
CN109 Temperature Detection Sensor: Detects the internal temperature of the projector. When the
internal temperature rises abnormally high, the sensor sends a signal to the digital board to
Pin 12,13 protect the projector.
When a connection error occurs, the Temp LED blinks..
Cover Detector: Checks whether the lamp cover covering the lamp is closed correctly. If
Pin 14,15 incorrect, the cover detector sends a signal to the digital board turning the projector off.
When a connection error occurs, the Temp and Lamp LEDs blink.
Ballast: Controls the lamp operation.
CN110
When a connection error occurs, the lamp does not turn on.
SMPS: Receives AC power from the outside and supplies voltage to the Main board and the ballast.
CN103
When a connection error occurs, power is not supplied to the projector..
DMD Board: Transmits the video signal output of the Main board to operate the DMD panel.
CN105
When a connection error occurs, a blank screen is displayed.
DMD Board
Connector Parts to Connect and Connection Error Symptoms
Main Board: Receives various video signals and control signals to control or operate the DMD board,
cooling fan, SMPS board, lamp, and the Ballast. It processes video signals and transmits them to the
CN103 DMD board.
When a connection error occurs, a blank screen is displayed.
Color Wheel: Rotates and operates as a RGB color filter and thereby gives color to images.
CN102
When a connection error occurs, the Color Wheel does not operate, and the lamp is not turned on.
Sensor Board: Detects the position of the RGB color filter that rotates on the Color wheel.
CN101
When a connection error occurs, the Color Wheel does not operate, and the lamp is not turned on.
6-5
6. Wiring Diagrams
MAIN Board
CN113 CN111
1 P3P3V 1 P3P3V
2 GND 2 KEYPD_PWR_DDP
3 IR_FRONT 3 KEYPD_RIGHT
4 KEYPD_LEFT
CN112
P5V 5 KEYPD_DOWN
1
LED_PWR 6 KEYPD_UP
2
LED_HOT 7 KEYPD_SELECT
3
LED_LAMP 8 KEYPD_MENU
4
GND 9 KEYPD_SOURCE
5
10 GND
CN109
CN110
1 FAN3 FAN3
1 OB_LAMPLITZ
2 (Lamp cooling FAN_ECO
2 GND
3 fan) FAN_12V
3 P5V
4 FAN2 FAN_TACHO
4 LAMPCTRL
5 (Ballast cooling FAN2_FB
5 UART1_TXD
6 fan) FAN2_11VO
7 FAN1 CN102
FAN1 1 GND
8 FAN_ECO
(Main cooling fan) 2 POWER_SW
9 FAN_12V
10 D5V 3 GND
Light Effect 4 P12V_FAN
11 LIGHT_EFFECT
12 GND 5 GND
Temp sensor 6 P12V
13 CHK_TEMP
14 GND 7 P12V
Cover Protection
15 switch CHK_COVER 8 GND
DMD Board
CN101
1 P3P3V_CW
2 CW_SENSE
3 GND
4 GND
CN102
1 OUTA
2 OUTB
3 OUTC
4 CWCTR
6-6
6. Wiring Diagrams
Main Board - Top
Reference Parts Functions
IC124 DDP2230 Processes video signals, and operates the Micom and the DMD panel
IC121 FLASH memory The memory to store software
Generates the power to operate the DMD Panel by receiving
IC130 DAD2000
adjustments from the DDP2230
IC129 PMD1000 Generates the power to operate the DDP2230 and various ICs.
IC122 XDR DRAM The memory to operate the DDP2230.
Decodes Composite and S-video signals (NTSC, PAL, and SECAM)
IC116 TVP5146
and transmits them to the DDP2230.
Decodes RGB, HDMI, and Component signals and transmits them to
IC117 MST3385
the DDP2230.
6-7
6. Wiring Diagrams
Main Board - Bottom
Reference Parts Functions
U104 SDRAM The memory to operate the DDP2230.
IC128 CLOCK GENERATOR Generates the clock signals to operate the DDP2230.
IC126 CLOCK GENERATOR Generates the clock signals to operate the XDR Dram.
IC118 EEPROM Stores the settings.
6-8
6. Wiring Diagrams
DMD board
Top side Bottom side
Reference Parts Functions
IC101 EEPROM Stores the settings.
The panel that displays the video signals received from the DDP2230
IC102 DMD panel
as a video image.
6-9
6. Wiring Diagrams
Memo
6-10
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