Daewoo SP-110 Service Manual
S/M No. : TSP110AEF0
Service Manual
Model : DSP-4210GM
CHASSIS : SP-110
DAEWOO ELECTRONICS CO., LTD
http : //svc.dwe.co.kr May.2001
TABLE OF CONTENTS
1. Safety precautions........................................................................................................................... 2
2. Product specification ...................................................................................................................... 4
3. Block diagram .................................................................................................................................. 6
4. Adjustment (How to use service remote controller)..................................................................... 7
5. When changing the new board....................................................................................................... 9
6. Trouble shooting..............................................................................................................................10
7. Assembly list ....................................................................................................................................30
8. Circuit diagram.................................................................................................................................31
9. Exploded view..................................................................................................................................35
- 1 -
Service manual SP-110
1. SAFETY & PRECAUTIONS
S
AFETY CHECK AFTER SERVING
Examine the area surrounding the repaired location for damage or deterioration. Observe that screw,
parts and wires have been r eturned to original positions. Afterwards, perform the following tests and
conform the specified values in order to v erify compliance with safety standards.
1-1. Insulation resistance test
Confirm the specif ied insulation resistance between po wer cord plug prong and externally e xposed
parts of the set (video and audio input terminals, speaker out terminals etc) is greater than v alues
given in table 1 below.
1-2. Dielectric strengthen test
Confirm specified dielectr ic strengthen between
power cord plug prongs and exposed accessible
parts of the set (video and audio input terminals,
speaker out, etc) is greater than v alues gi ven
table 1 below.
1-3. Clearance distance
When replacing primary circuit component, confirm specified clearance distance (d), (d’) betw een
soldered terminals (see Fig1), and between terminals and surrounding metallic parts. See table 1
below.
Rating for selected areas (table 1)
AC Line Voltage
100V Japan 3
110 to 130V USA &Canada - 900V A C 1min 3.2
110 to 130V
200 to 240V
Class model only
*
Region
Europe 6(d)
Australia 8(d)
Latin America (a : Power cord)
Insulation Dielectric Clearance
Resistance Strength Distance(d),(d’)
1M / 500V DC
10M / 500V DC
1kV AC 1min
4kV AC 1min.
.
NOTE
This table is unoff icial and for reference only. Be sure to confirm the precise values for your particular.
- 2 -
Service manual SP-110
1-4. Leakage current test
Confirm specified or lo wer leakage current between
B(earth ground, power cord plug prongs) and externally
exposed accessible parts (video and audio input terminals, speaker out, etc.)
Measuring method:(Power ON) lnsert load Z between
B(earth ground, power cord plug prongs) and exposed
accessible parts. Use AC voltmeter to measure AC voltage across both terminals of load Z. See Fig.2 and
following table.
Leakage current ratings for selected are as
Ac Line Voltage Region Load Z Leakage Current( i )Clearance Distance(d),(d’)
100V
110 to 130V
110 to 130V
200 to 240V
Japan
USA & Can-
ada
Europe
Australia
1
1
2
50
15 F
i 0.5mArms.
i 0.7mA peak
i 2mAdc
i 0.7mA peak
i 1mAdc
i 1mArms.
Exposed accessible parts
Exposed accessible parts
Antenna earth terminals
NOTE
This table is unofficial and for reference only. Be sure to confirm the precise values
for your particular country and locality.
Other terminals
- 3 -
Service manual SP-110
2. PRODUCT SPECIFICATION
[ DSP-4210GM ]
ITEM SPECIFICATION REMARK
1. GENERAL
1-1. MODEL NO DSP-4210GM
1-2. CHASSIS NO SP-110
1-3. SCREEN SIZE 42” (16:9)
1-4. COUNTRY WORLD WIDE
1-5. RESOLUTION 853(W) X 480(H)
1-6. REMOCON TRANSMITTER TYPE R-V2A(ENGLISH), R-V2AK(KOREAN)
1-7. SAFETY STANDARD UL, CSA, CE, KE
2. MECHANICAL
2-1. DIMENSION
1) WITHOUT STAND W X H X D = 1055 X 652 X 85
2) WITH STAND W X H X D = 1055 X 730 X 85
3) BOX W X H X D = 1190 X 870 X 480
2-2. WEIGHT
1) WITHOUT STAND 33kg
2) WITH STAND 39kg
3. ELECTRICAL & OPTICAL
3-1. COMPOSITE VIDEO INPUT SIGNAL NTSC,PAL,SECAM,PAL-M/N,NTSC4.43
1 INPUT ( 75 , 1Vp-p )
3-2. Y/C INPUT SIGNAL 50/60Hz, Super Jack 1 Input( 75 ,1Vp-p )
3-3. DTV/DVD INPUT SIGNAL Y,Pb/Cb,Pr/Cr 1 Input
( 75 ,1Vp-p )
DTV Resolution Mode ( Y, Pb, Pr ) :
*
1920X1080i, 1280X720p,
640X480p
DVD ( Y,Cb,Cr ) : 50/60Hz
*
3-4. PC SIGNAL R,G,B,H,V 15Pin D-sub jack 1 Input
( 75 ,1Vp-p )
* Resolution Mode : VGA - UXGA
3-5. SOUND INPUT SINAL Composite, Y/C : L/R Phone Jack 1Pair
DTV/DVD : L/R Phone Jack 1Pair
PC : L/R Phone Jack 1Pair
Input Impedance 47
*
- 4 -
Service manual SP-110
ITEM SPECIFICATION REMARK
3-6. Optical Chracteristics
1) Display Resolution 16:9 Wide 853 X 480
2) Peak Luminance 160cd/ m
3) Contrast Ratio 500:1
4) Color Temperature 8000o K
3-7. Scaling <Scaling Mode>
PC, DTV : Fill to Aspect Ratio,
DVD, VIDEO : Normal, Wide, Panaroma,
Letter Box, Letter Box with Sub Title
<Scaling Adjust>
PC,DTV (User Control) : H-Size, V-Size
3-8. Zoom Zoom
3-9. PIP Video Window in DTV/PC Picture
PIP Size, Position Changeable
3-10.OSD 8Language
KOREAN,ENGLISH,NETHERLAND,
FRENCH,SPANISH,GERMAN,
PORTUGUESE,ITALIAN
3-11. AC Power AC 90V-264V, 50/60Hz
3-12. Power Consumption 350 WATTS
3-13. Sound Output L : 8Watts, R : 8Watts
3-14. LAN Interface Option
3-15. Settop Box Interface Option
3-16. Others Freeze Picture, Video Rotation
2
Fill to Screen
H-Position, V-Position
+
, 4Direction Paning Avaiable
4. USER CONTROL & ACCESSORIES
4-1.CONTROL
1) SET AC POWER, MENU, INPUT SELECT, UP,
DOWN, LEFT, RIGHT
2) REMOCON TRANSMITTER INPUT SELECT,POWER,RECALL, ZOOM-,
ZOOM+,MENU,UP,DOWN,LEFT,RIGHT,
PICTURE MODE,FREEZE,SCREEN MODE,
MUTE
4-2. ACCESSORIES 1) REMOCON : R-V2A, R-V2AK
2) BATTERY : “AAA” 2EA
3) INSTRUCTION MANUA L
4) STAND (OPTION)
5) WALL HANGER (OPTION)
6) SPEAKER UNIT 2ASS’Y (OPTION)
- 5 -
3. BLOCK DIAGRAM
Service manual SP-110
- 6 -
4. Adjustment
4-1. How to conf irm the origianl data of VIDEO PCB
(1) Input selection : You select video mode
(2) You confirm the original data of user control
- Brightness : 36 ( :20 in case of DTV/PC input mode )
- Contrast : 60
- Sharpness : 2
- Colour : 32
- T int : 0 ( Center )
(3) You confirm the original data of SERVICE MODE (PW364)
( See 4-4 )
- Sub-Brightness : 60
- Sub-Contrast : 70
- R-Bias : 63
- G-Bias : 63
- B-Bias : 68
- R-Gain : 53
- G-Gain : 57
- B-Gain : 76
Service manual SP-110
4-2. How to adjust POWER PCB
(1) Devices for measurement : Digital volt meter, Pattern generator
(2) Conditions : You adjust as follows after assembling set and inputting WHITE PATTERN.
(Sustain voltage) : Voltage sustaining electronic discharge
1) V
SUS
TP : P12
Adjustment control : RV600
Standard voltage : 166V
2) V
(Scan voltage) : Scan voltage when recording D ATA
SCAN
TP : PA9 #6 PIN of Y PCB
Adjustment control : RV14
Standard voltage : -160V
3) V
(ADDRESS voltage) : Voltage recording DAT A
ADD
TP : P14
Adjustment control : VRS1
Standard voltage : 80V
4-3. X/Y PCB adjustment
(1) Devices for measurement : Digital volt meter, Pattern generator
(2) Previous adjustment voltage : You adjust as follows after assembling set and inputting BLUE
PATTERN.
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Service manual SP-110
1) V
(SHELF voltage) : X-electrode sustain voltage when recording D ATA
SHELF
TP : RCU25
Adjustment control : RU5
Standard voltage : +60V
(SCAN VH voltage) : VH voltage of SCAN IC when scanning
2) V
VH
TP : RY7 voltage each side
Adjustment control : RY6
Standard voltage : -70V
(3) The final operation adjustment
1) Input a monochrome pattern of R,G,B. And then you check if there are a bnormal OFF-state
pixels (which must be in ON-state but are in OFF-state).
If any, increase V
voltage slowly from 166V to remo v e abnormal OFF state pix els in that
SUS
pattern.
2) If there is no abnormal OFF-state pixel in monochrome pattern of R,G,B, make sure if there is
abnormal OFF-state in Magenta, Cyan, Yellow or not. If any, increase V
slowly in that
SUS
pattern.
3) Increase V
, which is set as above, by 1V.
SUS
4) Make sure if there are abnormal ON-state pixels(which must be on OFF-state but are in ONstate, for example, R or G) in Blue pattern after aging Blue pattern 5 minutes. If any, set V
slowly from - 160V to - 150V and decrease V
slowly to remo v e wrong electronic
SHELF
discharge.
SCAN
4-4. White balance adjustment
(1) Feed grey scale signal to video input terminal.
(2) Confirm the original data of user control (See 4-1).
(3) Press Remote controller in order starting with UP => MUTE => RECALL => MUTE BUTTON
to access Service adjustment mode and select PW364. And then confirm the original data of
the Service mode PW364 register. (See 4-1).
(4) Make sure you can’t recognize an y grey scale errors in the form of colour tint in this darker bands.
(5) You attach the sensor of a White balance meter to the white part on the upper end of this grey
scale pattern.
(6) Set White balance changing R,G,B-Gain.
• You make sure that R,G,B-Gain must be set within the limit of 63 20. If it is over the limit, it
is N.G.
• How to adjust temperature of colour
X = 0.290 0.01, Y = 0.310 0.01
o
Temperature of colour : 8,300
K
(7) You can set Luminance level changing Sub-contrast.
• If the set data of Sub-contrast is over the limit of 80, it is N.G.
(8) Press Menu button, to escape from Service mode.
- 8 -
5. When fitting a new board
5-1. V ideo
(1) Check the related adjustments are correctly set as per previous page.
5-2. X-Sustain
Service manual SP-110
(1) Set the V
voltage according to the list of adjustments.
SHELF
(2) The data of adjustment v oltage is on the label, which is attached on the metal part under
Y-Sustain board.
5-3. Y -Sustain
(1) Set the Vvh v oltage according to the list of adjustments.
(2) The data of adjustment voltage is on label, which is attached on the metal part under Y-Sustain
board.
5-4. Power module
(1) You set each voltage according to the list of adjustments.
(2) The data of adjustment v oltage is on the label, which is attached on the metal part under
Y -Sustain board.
- 9 -
6. Trouble shooting
6-1. Audio/video
6-2. Digital
6-3. X-SUSTAIN
6-4. Y-SUSTAIN
6-5. SCAN Board
6-6. DATA H/L, Connection(LU,CU,RU,LD,CD,RD)
6-7. Power
Service manual SP-110
- 10 -
6-1. Audio/V ideo
Service manual SP-110
- 11 -
* IMAGE PROCESSOR PART BLOCK DIAGRAM
Service manual SP-110
- 12 -
Service manual SP-110
NO Video screen ( Composite input
Check start
Does the ‘Please check input Is there a weak electronic 1.Confirm AC connection
signal or press “input” key.’ discharge on the screen? 2.Confirm Power S/W on
message appear? Y 3.Inspect Digital and X,Y
Y
Is the signal input jack
correctly connected?
Y
Does the input source operate?
Y
Is input selection in Video mode?
Y
Does the ‘DTV, PC’ screen
appear after inputting signal 1. Video signal processing is N.G
to DTV or PC jack? 2. Change video PCB
N
1.Make sure of is PA603 properly Confirm Video to digital
connection of connected? Connector PA603
N
Jack(PDP Monitor
& A/V de vice)
is DVS,DHS,DCLK Video PCB is N.G
of Video PCB P603 Change PCB
N
Operate A/V device, being outputted?
Which is used.
N
Confirm
input selection
)
NN
N
Y
N
Y
1.Confirm other PCBs Video PCB than
2.Change PA603
Y
Can you see input to P502 No.43 V1 1. Inspect jack PCB
of Video PCB? 2. Inspect input jack
Y
Can you see input to TP Y0, V0? 1. Video S/W and 3D COMB filter
(IC402) are N.G
2. Change video PCB
Can you output Sync of TP V2 : 60Hz/ 1. Confirm if IC400 and IC401
50Hz H2 : 31.5KHz/KHz? are N.G
2. Change video PCB
1. Video signal processing is N.G
2. Change Video PCB
Y
Y
N
N
N
CAUTION : 1.You must only remove PA603 after confirming
that you switch off the power.
2. You must thoroughly understand instruction manual
before removing Back cover.
- 13 -
Service manual SP-110
NO DTV screen (1080I, 720P, 480P)
Check start
NN
Does the ‘Please check input Is there a weak electronic 1.Confirm A C connection
signal or press “input” key.’ discharge on the screen? 2.Confirm Power S/W on
message appear? Y 3.Inspect Digital and X,Y
Y
Is the signal input jack
correctly connected?
Y
Does the input source operate?
Y
Is input selection in DTV/DVD mode?
Y
Does the ‘V ideo’ screen
appear after inputting signal 1. DTV signal processing is N.G
to Video jack? 2. Change video PCB
N
1.Make sure of is PA603 properly Confirm Video to digital
connection of connected? Connector PA603
N
Jack(PDP Monitor
& A/V de vice)
is DVS,DHS,DCLK Video PCB is N.G
of Video PCB P603 Change PCB
N
Operate A/V device, being output?
Which is used.
N
Confirm
input selection
1.Confirm other PCBs than Video PCBs
2.Change PA603
Y
Y
N
N
Y
Can you see input to P502 No.10 1. Inspect jack PCB
YD1 of Video jack? 2. Inspect input jack
Y
Can you output DTV signal in 1. DTV S/W and DTV processor(IC505) circuit are N.G
TP R,G,B? 2. DTV H/V Sync processing part is N.G
3. Change video PCB
Can you output Sync of TP V1:Hz/ 1. DTV S/W and DTV processor
H1 : KHz/ Hz? (IC505) circiuit are N.G
2. Change video PCB
1. Video signal processing is N.G
2. AD Converter(IC500) is N.G
3. Change Video PCB
Y
Y
N
N
N
- 14 -
Service manual SP-110
NO PC screen
Check start
NN
Does the ‘Please check input Is there a weak electronic 1.Confirm AC connection
signal or press “input” key.’ discharge on the screen? 2.Confirm Power S/W on
message appear? Y 3.Inspect Digital and X,Y
Y
Is the signal input jack
correctly connected?
Y
Does the input source operate?
Y
Is input selection in PC mode?
Y
Does the ‘V ideo’ screen
appear after inputting signal 1. PC signal processing is N.G
to Video jack? 2. Change video PCB
Y
Can you see input to P502 No.9,8,31,32,33 1. Inspect jack PCB
R,G,B,Hsync,Vsync of Video PCB? 2. Inspect input jack
Y
Can you output PC signal in 1. PC S/W and DTV processor(IC505) are N.G
TP R,G,B? 2. PC H/V Sync processing part is N.G
3. Change video PCB
Can you output Sync of TP V1 : Hz/ 1. PC S/W is N.G
H1 : KHz/ Hz? 2.Change video PCB
Y
N
1.Make sure of is PA603 properly Confirm Video to digital
connection of connected? Connector PA603
N
Jack(PDP Monitor
& PC)
Does DVS,DHS,DCLK Video PCB is N.G
of Video PCB P603 Change PCB
N
Operate A/V device, being output?
Which is used.
N
Confirm
input selection
N
N
N
1.Confirm other PCBs than Video PCB
2.Change PA603
Y
Y
N
N
Y
1. PC signal processing is N.G
2. A/D Converter is N.G
3. Change Video PCB
- 15 -
NO Sound
Check start
Service manual SP-110
Does the screen appear?
Y
is the sound signal input jack
correctly connected?
Y
is the speaker properly connected?
Y
Is sound signal output from P502?
Y
is sound signal on P400 No.2,3
of audio PCB?
Y
is sound signal on PA400 No.2,4 1. PA400 connector is N.G
of audio PCB? 2. Change audio PCB
N
N
1. Confirm AC connection
2. Confirm po wer S/W on
3. Inspect video PCB and other blocks
N
1.Make sure of connection of jack(PDP monitor & A/V device)
N
Connect speaker
N
1. Jack PCB is N.G
2. Video connection to
jack PCB is N.G
1. Sound S/W is N.G
2. Confirm IC404
3. Change video PCB
N
See: Siganl composition of P502 sound
1. RSPC, LSPC => PC sound
2. RSD1, LSD1 => DTV/DVD sound
3. RSV1, LSV1 => VIDEO, S-VHS sound
Y
is sound AMP on PA300 No.1,4 of Is power fed to PA3 of 1. Confirm if PA3 connector is N.G
audio PCB processing an output? audio PCB? 2. Change power board
Y
Does sound AMP on PA300 No.1,4 and
JP659 of audio PCB produce an output?
Y
1. Speaker or sound cable is N.G
2. Change speaker or sound cable
N N
Y
N
1. PA300 is N.G (Change audio PCB)
or JP659 is N.G (Change jack PCB)
- 16 -
NO Remote Controller operation
Check start
N
Is red LED next to PO WER S/W
on?
Y
Service manual SP-110
1. Confirm AC connection
2. Confirm po wer S/W on
3. Inspect video PCB, LED PCB and other
blocks
Does Remote Controller operate?
Y
Is screen on with key input?
Y
Is there waveform when pressing remocon
in IR NO.2 of P602
1. IR receipt block of video PCB is N.G
2. Inspect video PCB and other PCBs
N
1. Confirm Remote Controller operation and battery
N
1. Connection with video PCB is N.G or video PCB N.G
2. Inspect video PCB and other blocks
N
1. LED PCB is N.G
2. Change LED PCB
- 17 -
NO Key operation
Check start
Is red LED on next to POWER S/W
on?
Y
N
1. Confirm AC connection
2. Confirm po wer S/W on
3. Inspect video PCB, LED PCB and other
blocks
Service manual SP-110
Does power come on with
remocon?
Y
Is connection between PA601 of key PCB
and video PCB good?
Y
1. Inspect video PCB and other PCBs
N
1. Connection with video PCB is N.G or
V ideo PCB is N.G
2. Inspect video PCB and other blocks
N
1. PA601 connector is N.G
2. Change key PCB
- 18 -
Service manual SP-110
6-2. DIGITAL
Checking Order for normal operation of Digital Board and Check Points
( * Measure RMS voltage with a multi-meter , refer to the attached picture for position of
check points )
1. After make sure that the set turns off, turn off the High Voltage ON/OFF Switch of the Power
Board and then turn on the set
2. Confirm whether there is an input of 5V, 3.3V into Power Connector ( PA5 ).
- 5V input (pin No.1,2) : If 4.5V ~ 5.2V, O.K.
- 3.3V input (pin No.7,8) : If 3.0V ~ 3.5V, O.K.
3. Confirm whether Power 2.5V, 3.3V_1, 3.3V_2, 3V_3, 5V_1, 5V_2
- 2.5V : If 2.2V ~ 2.7V, O.K.
- 3.3V : If 3.0V ~ 3.5V, O.K.
- 5V : If 4.5V ~ 5.2V, O,K.
4. Confirm Reset and V_MUTE
- Reset : If 3.0V ~ 3.5V, O.K.
- V_MUTE :If 3.0V ~ 3.5V, O .K.
5. Confirm CONF_DONE ( ID102, ID103 )
- CONF_DONE : If 3.0V ~ 3.5V, O.K.
- 19 -
Service manual SP-110
- 20 -
Service manual SP-110
6-3. X-SUSTAIN BOARD
1. Separate PA7 and PA114 connector
2. Check the remaining electrical voltage of PA7
(1) Check the Voltage of Terminal 170V : If maintained beyond 10 volt, discharge (belo w 5 v olt)
with resistance of beyond 1K ohm 5 Watt
3. Confirm the v alue of series and parallel resistance of RU10//RU13-R U11//RU14-RU12//R U15
(1) Each value of resistance : 6.8 ohm 5 Watt
(2) The total value of resistance : 10.2 +/- 0.5 ohm
(3) In case of wrong value of resistance, replace (open) board and conf irm each connector
: the state of insertion ( installation )
4. In case of normal value of resistance, measure the v alue as follo wing table1.
(1) Use a Diode Tester
(2) If abnormal part is found, replace the board
(3) In case of normal state, Inspect connectors and other boards
Table 1. P A7 The value of Diode Tester of each terminal
+ : red, - : black
*
NAME DIODE MEASURE DIODE MEASURE
TESTER TESTER
1 170V + About 5 sec. - 0.49
GND - Later, +
Open
2 15V + About 3 sec. - 0.47
GND - Later, +
Open beyond 2V
3 CU1(5V) + Beyond 1.43 - 0.48
GND - +
Table 2. PA114 The v alue of Diode Tester of each terminal
+ : red, - : black
*
The configuration of terminal ( top view, components side )
- 21 -
Service manual SP-110
DIODE TESTER MEASURE DIODE TESTER MEASURE
- + + -
GND A 0.6 GND A 0.5
B 0.6 B 0.5
C 0.6 C 0.5
D 0.6 D 0.5
E 0.6 E 0.5
F 0.6 F 0.5
G 0.6 G 0.5
H 0.6 H 0.5
Table 3. The value of Diode Tester of each Semiconductor
+ : red, - : black
*
NAME DIODE MEASURE DIODE MEASURE
TESTER TESTER
1 QU5/QU6 D + ABOUT 5 - 0.48
S - SEC. LATER, +
OPEN
2 QU7/QU8 D + Open - 0.48
S- +
3 QU17/QU18 D + Open - 0.45
S- +
4 QU15/QU16 D + Open - 0.45
S - +
5 QU23~QU26 D + Open - 0.4
S- +
6 QU19~QU22 D + Open - 0.4
S- +
7 QU12 D + Open - 0.49
S- +
8 QU11 D + Beyond 2.3 - 0.49
S- +
9 QU9 D + ABOUT 5 - 0.5
S - SEC.LATER, +
OPEN
10 QU4 D + Open - 0.5
S- +
11 QU13/QU14 D + Open - 0.48
S- +
- 22 -
Service manual SP-110
6-3. Y -SUST AIN BOARD
1. Separate PA9, PA111 connector
2. Confirm the remaining electrical Voltage of PA9
(1) Confirm the Voltage of T erminal 170V : If maintained be yond 10 v olt, dischar ge(below 5 volt)
with resistance of beyond 1K ohm 5 Watt
(2) Confirm the Voltage of T erminal -155V : If maintained be yond -10 v olt, dischar ge(belo w -5
volt) with resistance of beyond 1K ohm 5Watt
3. Confirm the resistance of RY2 ( 470 ohm 5W att )
(1) In case of wrong value, replace board and conf irm each connector
4. In case of normal value of resistance, measure the value as following Table 1.
(1) Use a Diode Tester
(2) If abnormal part is found, replace the board
(3) In case of normal state, Inspect connectors and other boards
Table 1. PA9 The value of Diode Tester of each terminal
+ : red, - : black
*
NAME DIODE MEASURE DIODE MEASURE
TESTER TESTER
1 170V + About 3 Sec. Later, - Beyond 0.8
GND - Open +
2 -155V + Beyond 0.7 - Open
GND - +
3 ON/OFF + Open - Beyond 2.4
GND - +
4 15V + Beyon 0.7 - About 5 Sec. Later, beyond 0.4
GND - +
Table 2. PA111 The v alue of Diode Tester of each terminal
+ : red, -: black
*
The configuration of terminal (top view, components side)
- 23 -
Service manual SP-110
DIODE TESTER MEASURE DIODE TESTER MEASURE
- + + -
GND A 1.2 GND A 0.5
B 0.6 B 0.5
C 0.6 C 0.5
D 0.6 D 0.5
E 1.2 E 0.5
F 1.2 F 0.5
G 0.6 G 0.5
H 0.6 H 0.5
I 0.6 I 0.5
J 0.6 J 0.5
K 1.2 K 0.5
L 0.6 L 0.5
M 0.6 M 0.5
P 1.2 P 0.5
Table 3. The value of Diode Tester of each Semiconductor
+ : red, - : black
*
NAME DIODE MEASURE DIODE MEASURE
TEST TEST
1 QY5~QY8 D + ABOUT 3 - 0.4
S - SEC. LATER, +
OPEN
2 QY9~QY12 D + Open - 0.4
S- +
3 QY1~QY2 D + Open - 0.4
S- +
4 QY3~QY4 D + Open - 0.4
S- +
5 QY25~QY28 D + Open - 0.4
S- +
6 QY20~QY23 D + Open - 0.4
S- +
7 QY15~QY16 D + Open - 0.4
S- +
8 QY19 D + Open - 0.4
S- +
9 QY14 D + Open - 0.4
S- +
10 QY13 D + Beyond 1 - Open
S- +
11 QY2 D + Open - 0.4
S- +
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6-5. SCAN BOARD
1. Confirm the DIOED TESTER, PCB separately
2. The configuration
(1) The Voltage Terminal of Scan (top view, components side)
DIODE TESTER MEASURE DIODE TESTER MEASURE
A + Beyond 0.6 - Open
B- +
Service manual SP-110
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6-6. D ATA H/L, CONNECTION(RU,CU,LU,RD,CD,LD)
1. Confirm the upper part and the lo wer part
(1) Separate PA10 and PA11
(2) Confirm DIODE TESTER
2. Separate P112
(1) Confirm LU and two DATA H boards
3. Separate PA113
(1) Confirm CU and DATA H board
(2) Confirm RU and two DATA H boards
4. Separate P115
(1) Confirm LD and two DATA L boards
5. Separate P116
(1) Confirm CD and DATA L board
(2) Confirm RD and two DATA L boards
Table 1. The value of Diode Tester of each terminal
+ : red, - : black
*
NAME DIODE TESTER MEASURE DIODE TESTER MEASURE
1 Vadd + Open - 0.6
GND - +
2 5V + Beyond - 0.5
GND - 1.3 +
Service manual SP-110
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Service manual SP-110
6-7. POWER CHECK
NO
When the set is switched on, the power LED turns red? 1. Check Fuse F1 open
2. Check RC 1(Bridge Diode)
YES
open/short
NO
NO
When remote controller is switched on, LED turns green? Is 7PIN of CONNECTOR P2 Check
0 V? VIDEO
PCB?
YES
Check R20, R21, R22 open
Push the SW1 (Slide switch) of POWER MODULE After P3 CONNECTOR is
NO
NO
in the opposite direction of separated, is each voltage
Then, check LOW B+. (30V, 12V, 5V) correct?
Is each voltage (30V, 12V, 5V) of CONNECTOR P3
YES
correct? Check Audio AMP PCB
YES
After P5 CONNECTOR is
Is each voltage(5V, 3.3V) of CONNECTOR P5 separated, is each voltage
NO
NO
correct? (5V, 3.3V) correct?
YES
Check Digital PCB
YES
Is 1 pin voltage of CONNECTOR P7 and P9
correct at 15V?
YES
Is 1 pin voltage of CONNECTOR P10 and P11 correct
at 15V?
NO
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After P7 CONNCETOR is
Separated, 15V
present?
NO
After P9 CONNCETOR is
Separated, 15V
present?
NO
NO
After P10 CONNCETOR is
Separated, 15V
present?
YES
YES
Check
X-sus
PCB
Check
Y-sus
PCB
YES
Service manual SP-110
YES
Push the SW1(Slide Switch) POWER Module
in the direction of
Then, check High Voltage
And turn on the Power,
Can Vsus(170V) be produced?
YES
After P11 CONNECTOR is
Separated, is 15V
produced?
Replace Power Module
Without Connector P7
NO
Can Vsus(170V) be
producde?
Without Connector P9
Can Vsus(170V) be
produced?
NO
NO
NO
Check
YES
CONNECTION
PCB
Check
YES
X-sus PCB
Is the
YES
Vol ta ge
Of Conncetor
P7,5PIN 0V?
Check
Y-sus PCB
YES
YES
NO
Turn on the POWER. Can Vadd(70V) be
produced?
YES
Turn on the POWER. Can Vscan(-155V) be
produced?
YES
NO
NO
- 28 -
Without Connector P10
Can Vadd(70V) be
produced?
NO
Without Connector P11
Can Vadd(70V) be
produced?
NO
Without Connector P9
Can Vscan(-155V) be
produced?
YES
Check
Y-sus PCB
YES
Check
YES
Y-sus
PCB
E N D
Service manual SP-110
NO
Replace
POWER
Module
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