Daewoo DLP-26C2 Manuel utilisateur
Service Manual
LCD TV
CHASSIS : SL-500P
Model : DLP-26C2
DLP-26C3
DLP-32C1
DLP-32C2
DLP-32C3
DLP-32C5
DLP-32C6
DLP-32C7
DLP-37C3
DLP-37C7
S/M NO. : DSL500PEF0
Aug. 2007
Contents
1.Safety Precaution ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 3
2.Product Specification ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 4
2-1.Product Specification⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 4
2-2.Available Input Signal ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 5
3.Block Diagram ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 6
4.Description of Each Block ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 8
4-1.Block Diagram of Main IC and TP ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 8
4-2.Overview ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 9
4-2-1.Composite video, Y/C(S-Video) and SCART(CVBS, RGB) composite video ⋯9
4-2-2.DTV/DVD signal ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 11
4-2-3.PC(Personal Computer)signal ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 13
4-2-4.HDMI signal ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 15
4-2-5.R/G/B Processing(SCART1, TELETEXT R/G/B) ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 15
4-2-6.Audio signal processing, KEY, and LED ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 17
4-3.POWER PCB ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 22
5.SERVICE MODE ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 24
5-1.Entering SERVICE MODE ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 24
6.Main PCBs Trouble Diagnosis ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 26
6-1.Main PCBs Trouble Diagnosis⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 26
6-1-1.Common checking process when “No signal of Noraster” ⋯⋯⋯⋯⋯⋯⋯⋯⋯ 26
6-1-2.When No Sound ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 33
6-1-3.When Control Key does not operate⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 35
6-1-4.When Remote Controller does not operate⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 36
6-2.POWER PCB ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 38
7.Trouble Diagnosis⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 39
7-1.Facts you must know when Diagnosis or Repairing⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 39
7-2.Typical Symptoms of PCB problem or bad connection ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 40
8.Structure of LCD Set ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 41
9.Exploded View ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 43
10.Service Part List ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯ 52
11.Circuit Diagram ⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯100
-2-
-3-
1. Safety Precautions
(1) When moving or laying down a LCD Set, please deal with care. Avoid any impact towards
the LCD Set.
(2) Do not leave a broken LCD Set on for a long time. To prevent any further damages, after
check the broken Set’s condition, make sure to turn the power (AC) off.
(3) When opening the BACK COVER, you must turn off power (AC) to prevent any electric
shock.
(4) When loosening screws, check the connecting position and type of the screw.
Sort out the screws and store them separately
Because screws holding PCBs are working as electric circuit grounding,
make sure to check if any screw is missing when assembling.
(5) A LCD Set contains different kinds of connector cables.
When connecting or disconnecting connector cables, check the direction and position
of the cable beforehand.
(6) When disconnecting connectors unplug the connectors slowly with care.
(7) Connectors are designed so that if the number of pins or the direction does not match,
connectors will not fit.
When having problem in plugging the connectors, make sure to check their kind, position,
and direction.
-4-
2. Product Specification
Features
LCD Panel
TV System
Input
Connector
Output
Connector
Sound
Output
Power
Consumption
Dimension
(W x H x D)
Screen Size
Aspect Ratio
Resolution
Pixel Pitch
RF
Contrast
Ratio
Receiving
System
Stereo
System
26” 32”
16 : 9
1200 : 1
PAL, SECAM PAL, SECAM
FM MONO /
2-Carrier, NICAM FM MONO /
2-Carrier, NICAM
Channel
Memory ANALOG : 0~99CH
75 Ohm Coaxial
S-Video 1
SCART 2
ANALOG : 0~99CH
75 Ohm Coaxial
1
2
Component RCA X 1
PC RGB D-Sub X 1
PC Audio 3.5mm Mini-Jack
Headphone 3.5mm Mini-Jack
10W
100W 115W
812 x 502.7 x 240
Max
Power
Source
Set
Dimension
180VAC ~ 264VAC,
50~60Hz
806 x 628.5 x 250
180VAC ~ 264VAC,
50~60Hz
806 x 628.5 x 250 940 x 720 x 328.7
180VAC ~ 264VAC,
50~60Hz 180VAC ~ 264VAC,
50~60Hz
HDMI 1
RCA X 1
D-Sub X 1
FM MONO /
2-Carrier, NICAM FM MONO /
2-Carrier, NICAM
ANALOG : 0~99CH ANALOG : 0~99CH
75 Ohm Coaxial 75 Ohm Coaxial
11
22
RCA X 1 RCA X 1
D-Sub X 1 D-Sub X 1
3.5mm Mini-Jack
3.5mm Mini-Jack
10W
1
135W 150W
3.5mm Mini-Jack 3.5mm Mini-Jack
3.5mm Mini-Jack 3.5mm Mini-Jack
10W 10W
11
1366x768(WXGA)
0.421(H) x
0.140(W)*3mm
800 : 1
PAL, SECAM PAL, SECAM
800 : 1 800 : 1
1366x768(WXGA) 1366x768(WXGA) 1366x768(WXGA)
170.25um x
510.75um x RGB 0.51075(H) x
0.17025(W)*3 0.200mm x
0.600mm x RGB
16 : 9 16 : 9 16 : 9
32” 37”
DLP-26C2SMDB DLP-32C6LMBD DLP-37C3LMBDDLP-32C6SMBD
2-1.PRODUCT SPECIFCATION
-5-
Product Specification
2-2.Available Input Signal
2-2-1.HDMI/PC/COMPONENT
2-2-2.VIDEO
- PAL, PAL-M, PAL-N
- NTSC, NTSC4.43
- SECAM
Resolution
640 x 480
800 x 600
1024 x 768
1360 x 768
720 x 480
720 x 480i
720 x 576i
720 x 576
1280 x 720
1920 x 1080i
V-freg
60Hz
HDMI
OOX
72Hz
75Hz
60Hz
72Hz
75Hz
60Hz
70Hz
75Hz
60Hz
75Hz
60Hz
50Hz
50Hz
60Hz
50Hz
60Hz
60Hz
50Hz
OOX
OOX
OOX
OOX
OOX
OOX
OOX
O
O
O
O
O
O
OO
O
OO
O
OO
X
X
OO
XO
X
XO
X
X
OOX
OOX
X
X
PC(D-Sub) Component Standard
VESA Standard
VESA Standard
VESA Standard
VESA Standard
VESA Standard
VESA Standard
-6-
3. Block Diagram
-7-
Block Diagram
-8-
4. Description of Each Block
4-1.Block Diagram of Main IC and TP
-9-
Description of Each Block
4-2.Overview
Digital PCB is Multi Media circuit board that can process carious input signals such
as Video, component, PC, HDMI, and analog TV signal.
4-2-1.Composite video, Y/C(S-Video) and SCART(CVBS, RGB) composite video
-Flow Chart of RF, Video, S-Video Signal
Y-pb-pr
Scart1-rgb-fb
R-G-B
HY
Tuner Cvbs
HDMI
TMDS-IN
AV3-Y/C
U13
MST96889LD
Scart1-Cvbs
LVDS
Scart1-Cvbs
AV3-Cvbs
-10-
Description of Each Block
Color signal(input to U13)
Location:R204
Y signal(input to U13)
Location:R206
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