DAEWOO DLP-2622 Service Manual
DLP-2622 SERVICE MANUAL
Service Manual
26inch
LCD TV
E-RAE ELECTRONICS
Liquid Crystal Display
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DLP-2622 SERVICE MANUAL
E-RAE ELECTRONICS
CONTENTS
REVISION ……………………………………………………………..4
SPECIFICATION .. …………………………………………………...5
CONTROL DESCRIPTIONS ……………………………………….7
REMOTE CONTROL BUTTONS ……….. ………………. ………..9
TELETEXT FUNCTIONS …………………………..……………….10
PIN CONFIGURATION ………………………………………………11
FACTORY MENU ……………………………………………. ………20
WHITE BALANCE ADJUSTMENT ….. ……………. ………….…..31
DESCRIPTION OF SPECIAL FUNCTIONS ………………. … … ..34
CIRCUIT OPERATION & WAVEFORM ………………………. … ..36
MODULE POWER SEQUENCE …………………...….…………..43
MODULE PRECAUTIONS ………………………………………….45
EXPLODED OVERVIEW ……………………………………………47
REPLACEMENT PARTS LIST(exploded overview). …………..48
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DLP-2622 SERVICE MANUAL
E-RAE ELECTRONICS
DISASSEMBLY PROCEDURE ……………………………………...50
TROUBLE SHOOTING ……………………………………………....54
REPLACEMENT PARTS LIST ………………………………………56
RS-232C COMMUNICATION ………………………………………..65
WIRING DIAGRAM ………….... ………………………………. …….70
BLOCK DIABRAM ……………………………………………………71
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REVISION HISTORY
VERSION DATA DESCRIPTION NOTE
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DLP-2622 SERVICE MANUAL
Note : Specification and others are subject to change without notice for improvement.
TV
1.Input Signal :
PAL
SECAM
SD,HD
VGA ~SXGA
2. Tuner : PAL
SECAM
3. Input Voltage : AC 100V ~ 240V, @ 50/60Hz, 2A
4. Power Consumption : 140W
5. LCD Module : LTA260W1 - ### (SEC)
6. Speaker Impedance : 8Ω
7. Sound Output : 7W + 7W (Max)
8. Feature :
- AV Input
- Component1 Input (DVD)
- Component2 Input (DTV)
- D-SUB (Analog RGB 15 pin)
- S-Video Input
- Composite Input
- SCART1 Input (Full/RGB,CVBS)
- SCART2 Input (Half/CVBS)
- Tuner (PAL,SECAM)
- Audio Input (Composite, Component 1/2, S-Video, PC)
- RS-232C (9 pin)
9. Function :
- ZOOM
- PIP
- PBP (4:3,16:9)
- MTS
- TELETEXT
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DLP-2622 SERVICE MANUAL
10. External Interface
1) AV / COMPONENT / ANALOG RGB Input
ITEM MIN TYP MAX UNIT
AV Video Input Level 0.85 1.00 1.15 Vpp
AV Sync Input Level 0.24 0.29 0.32 Vpp
AV Burst Input Level 0.14 0.28 0.35 Vpp
AV Video Input Level 0.47 0.63 0.79 V
AV Audio Input L/R 0.47 0.63 0.79 V
Component Video Input Level
(Y,Cb/Pb,Cr/Pr)
Analog RGB Level 0.6 0.7 0.8 Vpp
H/V Sync Input Level 3.5 3.7 4.5 Vpp
3) COMPONENT Mode (Y,Cb/Pb,Cr/Pr)
RESOLUTION H-Freq(KHz) V-Freq(Hz) Timing Note
720*480 15.73 60.00 480i
4) SUPPORTING DISPLAY Mode
720*576 15.63 50.00 576i
720*480 31.47 59.94 480p
1280*720 45.00 60.00 720p
1280*720 44.96 59.94 720p
1920*1080 33.75 60.00 1080i
1920*1080 33.72 59.94 1080i
RESOLUTION H-Freq(KHz) V-Freq(Hz)
640*480
720*400 31.47 70
800*600
1024*768
1280*1024 64.00 60
0.6 0.7 0.8 Vpp
31,47 60
37.86 72
37.50 75
35.15 56
37.88 60
48.88 72
46.88 75
48.36 60
56,48 70
60.02 75
E-RAE ELECTRONICS
Component1
(DVD)
Component2
(DTV)
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CONTROL DESCRIPTIONS
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REMOTE CONTROL BUTTONS
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Teletext Function
DLP-2622 SERVICE MANUAL
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2 ( SOURCE )
DLP-2622 SERVICE MANUAL
PIN CONFIGURATION
1. A/D BOARD PIN CONFIGURATION
# I : Input Port, O : Out Port, G : Ground, I/O : Input / Output Port, NC : Not Connected
Pin No I/O Specification Description
1 ( +12V ) I +12V MAIN B/D 12V Input
2 ( +12V ) I +12V MAIN B/D 12V Input
3 ( AC_DET ) I +3.3V
4 ( GND ) G GND Ground
5 ( GND ) G GND Ground
6 ( GND ) G GND Ground
CON4
CON2
7 ( S5V ) I S5V Stand-by 5V Input
8 ( GND ) G GND Ground
9 ( BRITE_ADJ ) O
10 ( GND ) G GND Ground
11 ( BKL_ON ) O BACKLIGHT_ON LCD Backlight ON (ON:high, OFF:low)
12(POWER_
ON/OFF )
1 ( GND ) G GND Ground
2 ( LEDG ) O LED_GREEN GREEN LED CONTORL OUTPUT PORT
3 ( LEDR ) O LED_RED RED LED CONTORL OUTPUT PORT
4 ( IR ) I 5V / 0V
5 ( GND ) G GND Ground
6 ( VCC ) O 5V / 0V OSD B/D 5V Output
BRIGHTNESS_ADJUST
O POWER_ON/OFF POWER ON_OFF Control ( ON:low, OFF:high)
E-RAE ELECTRONICS
AC_DETECT PIN (
LCD Brightness Adjustment(Min:3V , Max:0V)
: High : Green LED On
: High : Red LED On
IR RECEIVER SIGNAL INPUT PORT
입전시
:high,
정전시
:low)
CON1
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1 ( POWER ) I 3.3V / 0V
I
3 ( MENU ) I
4 ( CH+ ) I
5 ( CH- ) I
6 ( VOL+ ) I
7 ( VOL- ) I
8 ( GND ) G GND Ground
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3.3V / 0V Input Source Selecting/Enter
3.3V / 0V
3.3V / 0V
3.3V / 0V
3.3V / 0V
3.3V / 0V
POWER S/W PORT
:DC POWER ON_OFF
OSD MENU Display
TV CHANNEL CONTROL(UP)
TV CHANNEL CONTROL(DOWN)
SOUND CONTROL(VOLUME UP)
SOUND CONTROL(VOLUME DOWN)
DLP-2622 SERVICE MANUAL
1 ( VCC12) O VCC12 Power Supply +12.0V
2 ( VCC12) O VCC12 Power Supply +12.0V
3 (VCC5A) O VCC5A Power Supply +5.0V
4 (MSP_L_OUT1)
5 (MSP_R_OUT1)
6 (GND) G GND Ground
7 (MSP_L_OUT2)
8 (MSP_R_OUT2)
9 (GND) G GND Ground
10 (AFT) I AFT AFT Level
J5
11 (TUNER_SIF) I TUNER_SIF RF TV Sound Input
12( (GND) G GND Ground
13 (TUNER_CVBS)
14 (GND) G GND Ground
15 (S_MUTE) O S_MUTE Sound Mute
16 (AMP_ST-BY)
17 (HEAD_MUTE)
18 (GND) G GND Ground
19 (SDA3) I SDA3 I2C Bus(DATA)
20 (SCL3) O SCL3 I2C Bus(CLK)
O MSP_L_OUT1 MSP LEFT Sound Output1
O MSP_R_OUT1 MSP RIGHT Sound Output1
O MSP_L_OUT2 MSP LEFT Sound Output2
O MSP_R_OUT2 MSP RIGHT Sound Output2
I TUNER_CVBS RF TV Video Input
O AMP_ST-BY
I HEAD_MUTE
Sound Stand-by
Not used
E-RAE ELECTRONICS
1 (VCC5) O VCC5 Power Supply +5.0V
J1
2 (VCC5) O VCC5 Power Supply +5.0V
3 (SCART_R) I SCART_R Full Scart Red Input
4 (SCART_G) I SCART_G Full Scart GREEN Input
5 (SCART_B) I SCART_B Full Scart BLUE Input
6 (SCART_FB) I SCART_FB Full Scart FAST BLANK Input
7 (GND) G GND Ground
8 (FSCART_CVBS_IN)
9 (GND) G GND Ground
10 (HSCART_CVBS_IN)
11 (GND) G GND Ground
12 (FSCART_ID)
13 (HSCART_ID)
14 (GND)
15 (F_CVBS_OUT)
16 (GND) G GND Ground
17 (H_CVBS_OUT)
18 (GND) G GND Ground
19 (F_CVBS_L_OUT)
I FSCART_CVBS_IN Full Scart Composite Input
I HSCART_CVBS_IN Half Scart Composite Input
I FSCART_ID Full Scart Check Signal Input
I HSCART_ID Half Scart Check Signal Input
G GND Ground
O F_CVBS_OUT Full Scart Composite Output
O H_CVBS_OUT Half Scart Composite Output
O F_CVBS_L_OUT Full Scart Composite Left Sound Output
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E-RAE ELECTRONICS
20 (F_CVBS_R_OUT)
21 (GND) G GND Ground
22 (H_CVBS_L_OUT)
23 (H_CVBS_R_OUT)
24 (GND) G GND Ground
1 (VCC5) O VCC5 Power Supply +5.0V
2 (F_SC_L_IN) I F_SC_L_IN Full Scart Left Sound Input
3 (F_SC_R_IN) I F_SC_R_IN Full Scart Right Sound Input
4 (GND) G GND Ground
5 (H_SC_L_IN) I H_SC_L_IN Half Scart Left Sound Input
6 (H_SC_R_IN) I H_SC_R_IN Half Scart Right Sound Input
7 (GND) G GND Ground
8 (AV_CVBS_IN)
9 (AV_CVBS_DET)
10 (GND) G GND Ground
11 (SVIDEO_L_IN)
12 (SVIDEO_R_IN)
J2
13 (GND) G GND Ground
14 (PC_L_IN) I PC_L_IN Analog RGB Left Sound Input
15 (PC_R_IN) I PC_R_IN Analog RGB Right Sound Input
16 (GND) G GND Ground
17 (DTV_L_IN) I DTV_L_IN Component2(DTV) Left Sound Input
18 (DTV_R_IN) I DTV_R_IN Component(DTV) Right Sound Input
19 (GND) G GND Ground
20 (DVD_L_IN) I DVD_L_IN Component1(DVD) Left Sound Input
21 (DVD_R_IN) I DVD_R_IN Component(DVD) Right Sound Input
22 (GND) G GND Ground
23 (AV_L_IN) I AV_L_IN Composite Left Sound Input
24 (AV_R_IN) I AV_R_IN Composite Right Sound Input
O F_CVBS_R_OUT Full Scart Composite Right Sound Output
O H_CVBS_L_OUT Half Scart Composite Left Sound Output
O H_CVBS_R_OUT Half Scart Composite Right Sound Output
I AV_CVBS_IN Composite Video Input
I AV_CVBS_DET Composite Check Signal Input
I SVIDEO_L_IN SVIDEO_Left Sound Input
I SVIDEO_R_IN SVIDEO_Right Sound Input
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CON5
DLP-2622 SERVICE MANUAL
1 (NC) NC NC Not Connected
2 (ANLOG_DIM)
3 (BLK_ON) BACKLIGHT_ON LCD Backlight ON
4 (GND) G GND Ground
5 (ODD0-) O RX0- Negative LVDS Differential data input. Channel 0
6 (ODD0+) O RX0+ Positive LVDS Differential data input. Channel 0
7 (GND) G GND Ground
8 (ODD1-) O RX1- Negative LVDS Differential data input. Channel 1
9 (ODD1+) O RX1+ Positive LVDS Differential data input. Channel 1
10 (GND) G GND Ground
11 (ODD2-) O RX2- Negative LVDS Differential data input. Channel 2
12 (ODD2+) O RX2+ Positive LVDS Differential data input. Channel 2
13 (GND) G GND Ground
14 (ODDCLK-) O RXCLK- Negative LVDS Differential Clock input.
15 (ODDCLK+) O RXCLK+ Positive LVDS Differential Clock input.
16 (GND) G GND Ground
17 (ODD3-) O RX3- Negative LVDS Differential data input. Channel 3
18 (ODD3+) O RX3+ Positive LVDS Differential data input. Channel 3
19 (GND) G GND Ground
20 (NC) NC NC Not Connected
21 (NC) NC NC Not Connected
22 (NC) NC NC Not Connected
23 (GND) G GND Ground
24 (GND) G GND Ground
25 (GND) G GND Ground
26 (VCC 5V) O VCC +5.0V Power Supply
27 (VCC 5V) O VCC +5.0V Power Supply
28 (VCC 5V) O VCC +5.0V Power Supply
29 (VCC 5V) O VCC +5.0V Power Supply
30 (VCC 5V) O VCC +5.0V Power Supply
BRIGHTNESS_ADJUST
LCD Brightness Adjustment
E-RAE ELECTRONICS
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DLP-2622 SERVICE MANUAL
2. I/O BOARD PIN CONFIGURATION
# I : Input Port, O : Out Port, G : Ground, I/O : Input / Output Port, NC : Not Connected
Pin No I/O Specification Description
1 (VCC5) I VCC5 Power Supply +5.0V
2 (VCC5) I VCC5 Power Supply +5.0V
3 (SCART_R) O SCART_R Full Scart Red Output
4 (SCART_G) O SCART_G Full Scart GREEN Output
5 (SCART_B) O SCART_B Full Scart BLUE Output
6 (SCART_FB) O SCART_FB Full Scart FAST BLANK Output
7 (GND) G GND Ground
8 (FSCART_CVBS_IN)
9 (GND) G GND Ground
10 (HSCART_CVBS_IN)
11 (GND) G GND Ground
12 (FSCART_ID)
J1
13 (HSCART_ID)
14 (GND)
15 (F_CVBS_OUT)
16 (GND) G GND Ground
17 (H_CVBS_OUT)
18 (GND) G GND Ground
19 (F_CVBS_L_OUT)
20 (F_CVBS_R_OUT)
21 (GND) G GND Ground
22 (H_CVBS_L_OUT)
23 (H_CVBS_R_OUT)
24 (GND) G GND Ground
1 (VCC5) I VCC5 Power Supply +5.0V
J2
2 (F_SC_L_) O F_SC_L_IN Full Scart Left Sound Output
3 (F_SC_R_) O F_SC_R_IN Full Scart Right Sound Output
4 (GND) G GND Ground
5 (H_SC_L_) O H_SC_L_IN Half Scart Left Sound Output
6 (H_SC_R_) O H_SC_R_IN Half Scart Right Sound Output
7 (GND) G GND Ground
8 (AV_CVBS_)
9 (AV_CVBS_DET)
10 (GND) G GND Ground
11 (SVIDEO_L_)
O FSCART_CVBS_IN Full Scart Composite Output
O HSCART_CVBS_IN Half Scart Composite Output
I FSCART_ID Full Scart Check Signal Output
I HSCART_ID Half Scart Check Signal Output
G GND Ground
O F_CVBS_OUT Full Scart Composite Output
O H_CVBS_OUT Half Scart Composite Output
O F_CVBS_L_OUT Full Scart Composite Left Sound Output
O F_CVBS_R_OUT Full Scart Composite Right Sound Output
O H_CVBS_L_OUT Half Scart Composite Left Sound Output
O H_CVBS_R_OUT Half Scart Composite Right Sound Output
O AV_CVBS_IN Composite Video Output
O AV_CVBS_DET Composite Check Signal Output
O SVIDEO_L_IN SVIDEO_Left Sound Output
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DLP-2622 SERVICE MANUAL
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12 (SVIDEO_R_)
13 (GND) G GND Ground
14 (PC_L_ ) O PC_L_ Analog RGB Left Sound Output
15 (PC_R_) O PC_R_ Analog RGB Right Sound Output
16 (GND) G GND Ground
17 (DTV_L_) O DTV_L_ Component2(DTV) Left Sound Output
18 (DTV_R_) O DTV_R_ Component(DTV) Right Sound Output
19 (GND) G GND Ground
20 (DVD_L_) O DVD_L_ Component1(DVD) Left Sound Output
21 (DVD_R_) O DVD_R_ Component(DVD) Right Sound Output
22 (GND) G GND Ground
23 (AV_L_) O AV_L_ Composite Left Sound Output
24 (AV_R_) O AV_R_ Composite Right Sound Output
O SVIDEO_R_IN SVIDEO_Right Sound Output
3. TUNER BOARD PIN CONFIGURATION
# I : Input Port, O : Out Port, G : Ground, I/O : Input / Output Port, NC : Not Connected
Pin No I/O Specification Description
1 ( VCC12) I VCC12 Power Supply +12.0V
2 ( VCC12) I VCC12 Power Supply +12.0V
3 (VCC5A) I VCC5A Power Supply +5.0V
4 (MSP_L_OUT1)
5 (MSP_R_OUT1)
6 (GND) G GND Ground
7 (MSP_L_OUT2)
8 (MSP_R_OUT2)
9 (GND) G GND Ground
10 (AFT) O AFT AFT Level
J5
11 (TUNER_SIF) O TUNER_SIF RF TV Sound Output
12( (GND) G GND Ground
13 (TUNER_CVBS)
14 (GND) G GND Ground
15 (S_MUTE) O S_MUTE Sound Mute
16 (AMP_ST-BY)
17 (HEAD_MUTE)
18 (GND) G GND Ground
19 (SDA3) O SDA3 I2C Bus(DATA)
20 (SCL3) O SCL3 I2C Bus(CLK)
O MSP_L_OUT1 MSP LEFT Sound Output1
O MSP_R_OUT1 MSP RIGHT Sound Output1
O MSP_L_OUT2 MSP LEFT Sound Output2
O MSP_R_OUT2 MSP RIGHT Sound Output2
O TUNER_CVBS RF TV Video Output
O AMP_ST-BY
O HEAD_MUTE
Sound Stand-by
Head Phone Mute(
사용하지 않음
)
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2 ( SOURCE )
4. OSD BOARD PIN CONFIGURATION
DLP-2622 SERVICE MANUAL
# I : Input Port, O : Out Port, G : Ground, I/O : Input / Output Port, NC : Not Connected
E-RAE ELECTRONICS
Pin No I/O Specification Description
1 ( POWER ) I 3.3V / 0V
I
3 ( MENU ) O
3.3V / 0V Input Source Selecting/Enter
3.3V / 0V
POWER S/W PORT
:DC POWER ON_OFF
OSD MENU Display
CON1
4 ( CH+ ) O
5 ( CH- ) O
6 ( VOL+ ) O
7 ( VOL- ) O
8 ( GND ) G GND Ground
3.3V / 0V
3.3V / 0V
3.3V / 0V
3.3V / 0V
TV CHANNEL CONTROL(UP)
TV CHANNEL CONTROL(DOWN)
SOUND CONTROL(VOLUME UP)
SOUND CONTROL(VOLUME DOWN)
5. IR/LED BOARD PIN CONFIGURATION
# I : Input Port, O : Out Port, G : Ground, I/O : Input / Output Port, NC : Not Connected
Pin No I/O Specification Description
1 ( GND ) G GND Ground
2 ( LEDG ) O LED_GREEN GREEN LED CONTORL OUTPUT PORT
: High : Green LED On
CON1
3 ( LEDR ) O LED_RED RED LED CONTORL OUTPUT PORT
: High : Red LED On
4 ( IR ) O 5V / 0V
5 ( GND ) G GND Ground
6 ( VCC ) I 5V / 0V OSD B/D 5V Output
IR RECEIVER SIGNAL INPUT PORT
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DLP-2622 SERVICE MANUAL
6. POWER BOARD PIN CONFIGURATION
E-RAE ELECTRONICS
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7. MODULE BASIC CONFIGURATION
[LTA260W1 - ### (SEC)]
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FACTORY MENU
1.
CALIBRATION MENU
FACTORY MODE
n
1. Calibration
: Automatic adjustment of white balance for Analogue input (PC) and Component2 (DTV)
input.
n
2. Option Table 0002
: Initial installation of OSD.
n
3. Color control
:
n
n
: Value adjustment for video decoder’s brightness and contrast, color tickness in
n
n
n
n
n
Adjustment of contrast and brightness for scaler generating power.
4. PW565
: Adjustment of contrast and brightness for scaler input port (CH1 or CH2).
5. VPC3230-MAIN
the main window.
6. VPC3230-SUB
: Value adjustment for video decoder’s brightness and contrast, color tickness in
the sub window.
7. ADC
: Value adjustment for brightness and contrat, color thickness of analogue RGB,
Y,Pb,Pr of AD9883 A/D convertor.
8. Heatrun
: The mode when you do aging.
9. Version
: It shows the information of Firmware version and Panel.
10. Setup
: Installation of TTX language and video, protocol, logo.
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: Automatic adjustment as the fittest status of white balance for component2 (DTV)
DLP-2622 SERVICE MANUAL
E-RAE ELECTRONICS
2. CALIBRATION MENU
CALIBRATION MENU
n
1. PC Calibration
: Automatic adjustment as the fittest status of white balance for analogue input (PC)
n
2. DTV Calibration
input.
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3. OPTION TABLE MENU
OPTION TABLE MENU
n
Flesh tone
n
LNA
(Low Noise Amplifier)
: On/Off Installation of screen quality improvement fuction, when TV input signal is
weak.
n
Blue Screen
: When there are no input signal of the TV and external equipment, you can install the
screen color as blue.
n
Melody Volume
: Installation of the melody volume for initial soft power On/Off. The volume is exfactoried as “0 ” due to license.
n
Video Mute
n
TTX TOP
n
Auto FM
n
Help
n
Area
n
High Deviation
DLP-2622 SERVICE MANUAL
E-RAE ELECTRONICS
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