Sanyo LCD-42XF4 User manual

SERVICE MANUAL LCD Television
N5CV
FILE NO.
Model No. LCD-42XF4
(Argentina)
Give complete “SERVICE REF. NO.” for parts order
or servicing. It is shown on the rating label at the
cabinet back of the unit.
This T.V. receiver will not work properly in for-
eign countries where the television transmis-
sion system and power source differ from the
design specifications. Refer to the specification
table.
Service Ref. No. LCD-42XF4-00
Product Code:113011616
Original Version
Chassis Series: UH3-L
Contents
SafetyNotice ................................. 2
Specifications................................. 3
Chassis Block Diagrams . . . . . . . . . . . . . . . . . . . . . . 4-5
IC Block Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8
On-screen Service Menu System . . . . . . . . . . . . . . 9-15
ServiceAdjustments........................... 16
Mechanical Disassembly . . . . . . . . . . . . . . . . . . . . 17-22
CabinetPartsList............................. 23
Chassis Electrical Parts List. . . . . . . . . . . . . . . . . . 25-36
Printed Wiring Board . . . . . . . . . . . . . . . . . . . . . . . 37-41
ECO
MAIN/SUB
CHANGE
BACK
PIP
BASS
SOUND
VIDEO MODE
POWER
RECALL
DISPLAY
MUTE
AUDIO MODE
SLEEP
IMAGE
ZOOM
SURROUND
CH
CH

Safety Notice
-2-
Safety Precautions
The following precautions must be observed.
1: Comply with all caution and safety-related notes provided on the cabinet back, cabinet bottom, inside the
cabinet or on the chassis.
2: When replacing a chassis in the cabinet, always be certain that all the protective devices are installed
properly, such as, control knobs, adjustment covers or shields, barriers, etc..
DO NOT OPERATE THIS TELEVISION WITHOUT THE PROTECTIVE SHIELD IN POSITION AND PROPERLY
SECURED.
3: Before replacing the cabinet cover, thoroughly inspect the inside of the cabinet to see that no stray parts or
tools have been left inside.
Before returning any television to the customer, the service personnel must be sure that it is completely safe to
operate without danger of electrical shock.
Product Safety Notice
Product safety should be considered when a component replacement is made in any area of a receiver.
Components indicated by mark in the parts list and the schematic diagram designate components in which
safety can be of special significance. It is particularly recommended that only parts designated on the parts list
in this manual be used for component replacement designated by mark . No deviations from resistance
wattage or voltage ratings may be made for replacement items designated by mark .

Specifications
-3-
Power Source AC 100 - 240 Volts, 50/60 Hz
Receiving System PAL-N, PAL-M, NTSC
Channel Coverage ANTENNA mode
VHF: CH02 - CH13
UHF: CH14 - CH69
CATV mode
VHF band: CH01-CH13
MID band: CH14-CH22
SUPER band: CH23-CH36
HYPER band: CH37-CH64
ULTRA band: CH65-CH94 and CH100-CH125
Low MID band: CH95-CH99
Aerial Input Impedance 75 Ω
LCD panel
Screen Size (Measured Diagonally): 42 inches
Picture Resolution: 1920 (Horiz..) x 1080 (Vert.) pixels
Brightness: 500 cd/m2
Audio Output (RMS) 9 W + 9 W
Speaker Size 6 cm x12 cm x 2 pcs
Input and Output Terminals
AV1 Input Video Input: Composite video Input (RCA Jack) x1
S-Video Input: DIN 4-pin Jack x1
Audio Input: L/R Stereo Input (RCA Jack) x 1 set
AV2 Input Video Input: Component Y (combined with composite video input), CB, CR Input (RCA Jack) x1 set
Audio: L/R Stereo Input (RCA Jack) x 1 set
HDMI Input HDMI Terminal 19 pin x2
PC Input Video Input: D-SUB 15 pin x1
Audio Input: Mini stereo jack x 1
Output Terminals Video Monitor Output: RCA jack x 1
Audio Monitor Output: L/R Stereo Output (RCA jack) x 1 set
Headphone Jack : Mini stereo jack x1
Dimensions (W x H x D) Model LCD-42XF4: 1049 x 758 x 270 mm (including stand)
Weight (NET) Model LCD-42XF4: < 25.2kg (include stand)
Environmental Considerations
Operating Temperature 0˚C ~ 40˚C (32˚F ~ 104˚F)
Operating Humidity 20 ~ 80%
Storage Temperature -10˚C ~ 50˚C (14˚F ~ 122˚F)
Storage Humidity 20 ~ 80%
Specifications subject to change without notice.

-4-
Chassis Block Diagram
MAIN SIGNAL PROCESSING CIRCUIT
24LC64

-5-
Chassis Block Diagram
POWER SUPPLY IC (STRW6753)

-6-
IC Block Diagrams (On the ASSY, PWB, MAIN)
<TOP_VIEW>
MST6U89DL-LF
IC900
67
AUVRADN
68
AUVRADP
69
AUVREF
150
MADR[8]
151
MADR[9]
152
MADR[10]
153
MADR[11]
154
AD[0]
155
AD[1]
70
AVDD_AU
156
AD[2]
71
AUL0
157
AD[3]
72
AUR0
158
AD[4]
73
AUL1
159
AD[5]
74
AUR1
75
AUCOM
76
AUL2
77
AUR2
78
AUL3
79
AUR3
160
AD[6]
161
AD[7]
162
WRZ
163
RDZ
164
ALE
165
VDDP
80
AUMONO
166
GND
81
AUOUTL3
167
SCK
82
AUOUTR3
168
SDI
83
AUOUTL2
169
CSZ
84
AUOUTR2
85
AUOUTL1
86
AUOUTR1
87
AUOUTL0
88
AUOUTR0
89
GPIOF[0]
170
SDO
171
SAR0
172
SAR1
173
SAR2
174
SAR3
175
PWM0
90
GPIOF[1]
176
PWM1
91
GPIOF[2]
177
DDCR_DA
92
GPIOF[3]
178
DDCR_CK
93
GPIOF[4]
179
DDCA_DA
94
GPIOF[5]
95
GPIOF[6]
96
GPIOG[7]
97
GPIOF[8]
98
GPIOF[9]
99
VDDP
1
RXB1N
180
DDCA_CK
2
RXB1P
181
INT
3
GND
182
IRIN
4
RXB2N
183
VDDP
5
RXB2P
184
GND
6
HPLUGB
185
VDDC
7
DDCDB_D
186
GPIOB[6]
8
DDCDB_C
187
USB_VBUS
9
RXACKN
188
USB_DM
189
USB_DP
190
USB_CID
191
PWM2
192
PWM3
193
VDDC
194
VDDP
195
LVA4P
196
LVA4M
197
LVA3P
198
LVA3M
199
LVACKP
200
LVACKM
201
LVA2P
202
LVA2M
203
LVA1P
204
LVA1M
205
LVA0P
206
LVA0M
207
VDDP
208
GND
209
LVB4P
210
LVB4M
211
LVB3P
212
LVB3M
213
LVBCKP
214
LVBCKM
215
LVB2P
216
LVB2M
217
LVB1P
218
LVB1M
219
LVB0P
220
LVB0M
221
VDDP
222
GND
223
GPIOE[3]
224
GPIOE[2]
225
GPIOE[1]
226
GPIOE[0]
227
ICLK
228
IDE
229
IHSYNC
230
IVSYNC
231
DI[0]
10
RXACKP
232
DI[1]
11
GND
233
DI[2]
234
DI[3]
12
RXA0N
235
VDDP
13
RXAOP
236
DI[4]
14
AVDD_DV1
237
DI[5]
15
RXA1N
238
DI[6]
16
RXA1P
239
DI[7]
17
GND
18
RXA2N
19
RXA2P
100
GND
101
VDDC
102
DQS[1]
240
VDDC
103
MDATA[15]
241
GND
104
MDATA[14]
242
DI[8]
20
HPLUGA
105
GND
243
DI[9]
21
REXT
106
MDATA[13]
244
DI[10]
22
DDCDA_D
107
MDATA[12]
245
DI[11]
23
DDCDA_C
108
VDDM
246
DI[12]
24
HSYNC1
109
MDATA[11]
247
DI[13]
25
VSYNC1
248
HWRESET
26
VCLAMP
249
XOUT
27
REFP
28
REFM
29
BIN1P
110
MDATA[10]
111
MDATA[9]
112
MDATA[8]
250
XIN
113
GND
251
AVDD_MPLL
114
VDDM
252
RXBCKN
115
MDATA[7]
30
SOGIN1
253
RXBCKP
116
MDATA[6]
31
GIN1P
254
AVDD_DVI
117
MDATA[5]
32
RIN1P
255
RXB0N
118
MDATA[4]
33
VCOM2
256
RXB0P
119
VDDM
34
BIN0P
35
VCOM2
36
GIN0P
37
SOGIN0
38
RIN0P
39
AVDD_ADC
120
MDATA[3]
121
MDATA[2]
122
MDATA[1]
123
MDATA[0]
124
DQS[0]
125
LDQM
40
GND
126
UDQM
41
HSYNC0
127
MVREF
42
VSYNC0
128
MCLKE
43
VSYNC2
129
MCLKZ
44
BIN2P
45
SOGIN2
46
GIN2P
47
RIN2P
48 C1
49 Y1
130
MCLK
131
BADR[1]
132
BADR[0]
133
RASZ
134
GND
135
VDDM
50 C0
136
AVDD_MEMPL
51 Y0
137
CASZ
52
CVBS3
138
WEZ
53
CVBS2
139
MADR[0]
54
CVBS1
55
VCOM1
56
CVBS0
57
VCOM0
58
AVDD_ADC
59
CVBSOUT1
140
MADR[1]
141
MADR[2]
142
MADR[3]
143
MADR[4]
144
MADR[5]
145
MADR[6]
60
CVBSOUT0
146
MADR[7]
61
GND
147
VDDM
62
SIF0P
148
GND
63
AVDD_SIF
149
VDDC
64
SIF1P
65
SIFM
66
GND
257
BIDIRECT
DGND
IC900 MST6U89DL-LF

-7-
IC Block Diagrams (On the ASSY, PWB, MAIN)
IC800 HY5DU281622FTP

IC Block Diagrams (On the ASSY, PWB, MAIN)
-8-
IC403 YDA138A20

-9-
On-screen Service Menu System
General
This set has an On-screen Service Menu System included in the CPU that allows remote operation for most of the
service adjustments.
■ How to select the service item and adjust data:
On-screen Service Menu System
Quick operation is needed to enter Service Mode.
■ How to enter the Service Menu
1. Press and hold the MENU button on Side Controls.
2. Keep pressing the MENU button and press the MUTE button on the remote control, and the FACTORY MENU
will be displayed.
3. Select SERVICE by pressing or button and then press +or - button to enter SERVICE menu.
ECO
MAIN/SUB
CHANGE
BACK
PIP
BASS
SOUND
VIDEO MODE
POWER
RECALL
DISPLAY
MUTE
AUDIO MODE
SLEEP
IMAGE
ZOOM
SURROUND
CH
CH
ECO
MAIN/SUB
CHANGE
BACK
PIP
BASS
SOUND
VIDEO MODE
POWER
RECALL
DISPLAY
MUTE
AUDIO MODE
SLEEP
IMAGE
ZOOM
SURROUND
CH
CH
To adjust data:
1) Select “DATA” line by pressing or button.
■ To exit service mode
Press BACK button or MENU button to exit service mode.
Note: The all adjusted data in service mode will be memorized into EEPROM automatically.
2) Press +or - button to adjust data.
Open or close the On-Screen Menu.
MENU button
Side Controls
[ Service Mode Menu ]
SERVICE
INDEX-007 575P SUB- COLOR
ADDR. 09AB
DATA 00 00000000
Data Value
Item Name
Address
SERVICE
INDEX-007 575P SUB- COLOR
ADDR. 09AB
DATA 00 00000000

-10-
On-screen Service Menu System
■ Service Adjustment Data Table
Item Name Initial data IC Description
575i SUB-CONT 00H MST6U89
575i SUB-BRIGHT 00H MST6U89 DVD Input
575i SUB-COLOR 00H MST6U89 Input Video Format： 575i
575i SUB-TINT 00H MST6U89 (Difference）
575i SUB-SHARP 00H MST6U89
575p SUB-CONT 00H MST6U89
575p SUB-BRIGHT 00H MST6U89 DVD Input
575p SUB-COLOR 00H MST6U89 Input Video Format： 575p
575p SUB-TINT 00H MST6U89 (Difference）
575p SUB-SHARP 00H MST6U89
480i SUB-CONT 00H MST6U89
480i SUB-BRIGHT 00H MST6U89 DVD Input
480i SUB-COLOR 00H MST6U89 Input Video Format： 480i
480i SUB-TINT FDH MST6U89 (Difference）
480i SUB-SHARP 00H MST6U89
480p SUB-CONT 00H MST6U89
480p SUB-BRIGHT 00H MST6U89 DVD Input
480p SUB-COLOR 00H MST6U89 Input Video Format： 480p
480p SUB-TINT FDH MST6U89 (Difference）
480p SUB-SHARP 00H MST6U89
1080i(50） SUB-CONT 00H MST6U89
1080i（50） SUB-BRIGHT 00H MST6U89 DVD Input
1080i（50） SUB-COLOR 00H MST6U89 Input Video Format： 1080（50）i
1080i（50）SUB-TINT FDH MST6U89 (Difference）
1080i（50） SUB-SHARP 00H MST6U89
1080i(60） SUB-CONT 00H MST6U89
1080i（60） SUB-BRIGHT 00H MST6U89 DVD Input
1080i（60） SUB-COLOR 00H MST6U89 Input Video Format：1080（60）i
1080i（60）SUB-TINT 00H MST6U89 (Difference）
1080i （60） SUB-SHARP 00H MST6U89
720p50 SUB-CONT 00H MST6U89 DVD Input
720p50 SUB-BRIGHT 00H MST6U89 Input Video Format： 720p (50)
720p50 SUB-COLOR 00H MST6U89 (Difference）
720p50 SUB-TINT FDH MST6U89
720p50 SUB-SHARP 00H MST6U89
720p60 SUB-CONT 00H MST6U89 DVD Input
720p60 SUB-BRIGHT 00H MST6U89 Input Video Format： 720p (60)
720p60 SUB-COLOR 00H MST6U89 (Difference）
720p60 SUB-TINT 00H MST6U89
720p60 SUB-SHARP 00H MST6U89
1080P（50）SUB-CONT 00H MST6U89 DVD Input
1080P（50）SUB-BRIGHT 00H MST6U89 Input Video Format： 1080P（50）
1080P（50） SUB-COLOR 00H MST6U89 (Difference）
1080P（50）SUB-TINT FDH MST6U89

-11-
On-screen Service Menu System
Item Name Initial data IC Description
1080P（50） SUB-SHARP 00H MST6U89
1080P（60）SUB-CONT 00H MST6U89 DVD Input
1080P（60） SUB-BRIGHT 00H MST6U89 Input Video Format： 1080P（60）
1080P（60） SUB-COLOR 00H MST6U89 (Difference）
1080P（60）SUB-TINT 00H MST6U89
1080P（60） SUB-SHARP 00H MST6U89
PC SUB-CONT 00H MST6U89
PC SUB-BRIGHT 00H MST6U89
PC SUB-COLOR 00H MST6U89 PC Input
PC SUB-TINT 00H MST6U89 (Difference）
PC SUB-SHARP 00H MST6U89
DVI SUB-CONT 00H MST6U89
DVI SUB-BRIGHT 00H MST6U89
DVI SUB-COLOR 00H MST6U89 HDMI Input
DVI SUB-TINT 00H MST6U89 (Difference）
DVI SUB-SHARP 00H MST6U89
AVPAL-N BASE-CONT 0DH MST6U89
AVPAL-N BASE-BRIGHT FBH MST6U89
AVPAL-N BASE-COLOR 00H MST6U89 Input Alteration：VIDEO(PAL-N)
AVPAL-N BASE-TINT 00H MST6U89 (BASE）
AVPAL-N BASE-SHARP 00H MST6U89
AVN SUB-CONT 00H MST6U89
AVN SUB-BRIGHT 00H MST6U89
AVN SUB-COLOR 00H MST6U89 Input Alteration：VIDEO(NTSC)
AVN SUB-TINT 00H MST6U89 (Difference）
AVN SUB-SHARP 00H MST6U89
AVPAL-M SUB-CONT 00H MST6U89
AVPAL-M SUB-BRIGHT 00H MST6U89 Input Alteration：VIDEO(PAL-M)
AVPAL-M SUB-COLOR 00H MST6U89 (Difference）
AVPAL-M SUB-TINT 00H MST6U89
AVPAL-M SUB-SHARP 00H MST6U89
S(50) SUB-CONT 00H MST6U89
S(50) SUB-BRIGHT 00H MST6U89
S(50) SUB-COLOR 00H MST6U89 Input Alteration：S VIDEO(PAL)
S(50) SUB-TINT F6H MST6U89 (Difference）
S(50) SUB-SHARP 00H MST6U89
S(60) SUB-CONT 00H MST6U89
S(60) SUB-BRIGHT 00H MST6U89
S(60) SUB-COLOR 00H MST6U89 Input Alteration：S VIDEO(NTSC)
S(60) SUB-TINT 00H MST6U89 (Difference）
S(60) SUB-SHARP 00H MST6U89
RFPAL-N SUB-CONT 00H MST6U89
RFPAL-N SUB-BRIGHT 00H MST6U89
RFPAL-N SUB-COLOR 00H MST6U89 Input Alteration：RF(PAL-N)

-12-
On-screen Service Menu System
Item Name Initial data IC Description
RFPAL-N SUB-TINT 00H MST6U89 (Difference）
RFPAL-N SUB-SHARP 00H MST6U89
RFN SUB-CONT 06H MST6U89
RFN SUB-BRIGHT 00H MST6U89
RFN SUB-COLOR 00H MST6U89 Input Alteration：RF(NTSC)
RFN SUB-TINT F6H MST6U89 (Difference）
RFN SUB-SHARP 00H MST6U89
RFPAL-M SUB-CONT 00H MST6U89
RFPAL-M SUB-BRIGHT 00H MST6U89
RFPAL-M SUB-COLOR 00H MST6U89 Input Alteration：RF(PAL-M)
RFPAL-M SUB-TINT 00H MST6U89 (Difference）
RFPAL-M SUB-SHARP 00H MST6U89
White-575i R 0AH MST6U89
White-575i G 0AH MST6U89
White-575i B 0AH MST6U89 DVD Input：575i
Black-575i R 00H MST6U89 (Difference）
Black-575i G 00H MST6U89
Black-575i B 00H MST6U89
White-575p R 0AH MST6U89
White-575p G 0AH MST6U89
White-575p B 0AH MST6U89 DVD Input：575p
Black-575p R 00H MST6U89 (Difference）
Black-575p G 00H MST6U89
Black-575p B 00H MST6U89
White-480i R 0AH MST6U89
White-480i G 0AH MST6U89
White-480i B 0AH MST6U89 DVD Input：480i
Black-480i R 00H MST6U89 (Difference）
Black-480i G 00H MST6U89
Black-480i B 00H MST6U89
White-480p R 0AH MST6U89
White-480p G 0AH MST6U89
White-480p B 0AH MST6U89 DVD Input：480p
Black-480p R 00H MST6U89 (Difference）
Black-480p G 00H MST6U89
Black-480p B 00H MST6U89
White-1080I (50)R 0AH MST6U89
White-1080I (50)G 0AH MST6U89
White-1080I (50)B 0AH MST6U89 DVD Input：1080I (50)
Black-1080I (50)R 00H MST6U89 (Difference）
Black-1080I (50)G 00H MST6U89
Black-1080I (50) B 00H MST6U89
White-1080I (60)R 0AH MST6U89
White-1080I (60)G 0AH MST6U89

-13-
On-screen Service Menu System
Item Name Initial data IC Description
White-1080I (60)B 0AH MST6U89 DVD Input：1080I (60)
Black-1080I (60)R 00H MST6U89 (Difference）
Black-1080I (60)G 00H MST6U89
Black-1080I (60)B 00H MST6U89
White-720P50 R 0AH MST6U89
White-720P50 G 0AH MST6U89
White-720P50 B 0AH MST6U89 DVD Input:720P (50)
Black-720P50 R 00H MST6U89 (Difference）
Black-720P50 G 00H MST6U89
Black-720P50 B 00H MST6U89
White-720P60 R 0AH MST6U89
White-720P60 G 0AH MST6U89
White-720P60 B 0AH MST6U89 DVD Input:720P (60)
Black-720P60 R 00H MST6U89 (Difference）
Black-720P60 G 00H MST6U89
Black-720P60 B 00H MST6U89
White-1080P（50） R 0AH MST6U89
White-1080P（50） G 0AH MST6U89
White-1080P（50） B 0AH MST6U89 DVD Input:1080P（50）
Black-1080P（50） R 00H MST6U89 (Difference）
Black-1080P（50） G 00H MST6U89
Black-1080P（50） B 00H MST6U89
White-1080P（60） R 0AH MST6U89
White-1080P（60） G 0AH MST6U89
White-1080P（60） B 0AH MST6U89 DVD Input:1080P（60）
Black-1080P（60） R 00H MST6U89 (Difference）
Black-1080P（60） G 00H MST6U89
Black-1080P（60） B 00H MST6U89
White-PC R 00H MST6U89
White-PC G 00H MST6U89
White-PC B 00H MST6U89 PC Input
Black-PC R 00H MST6U89 (Difference）
Black-PC G 00H MST6U89
Black-PC B 00H MST6U89
White-DVI R 00H MST6U89
White-DVI G 00H MST6U89
White-DVI B 00H MST6U89 HDMI Input
Black-DVI R 00H MST6U89 (Difference）
Black-DVI G 00H MST6U89
Black-DVI B 00H MST6U89
White-AVPAL-M R 00H MST6U89
White-AVPAL-M G 00H MST6U89
White-AVPAL-M B 00H MST6U89 VIDEO入力→PAL-M
Black-AVPAL-M R 00H MST6U89 (Difference）

-14-
On-screen Service Menu System
Item Name Initial data IC Description
Black-AVPAL-M G 00H MST6U89
Black-AVPAL-M B 00H MST6U89
White-AVN R 00H MST6U89
White-AVN G 00H MST6U89
White-AVN B 00H MST6U89 VIDEO Input→ＮＴＳＣ
Black-AVN R 00H MST6U89 (Difference）
Black-AVN G 00H MST6U89
Black-AVN B 00H MST6U89
BASEWhite-AVPAL-N R 75H MST6U89
BASEWhite-AVPAL-N G 75H MST6U89
BASEWhite-AVPAL-N B 75H MST6U89 VIDEO Input→ＰＡＬ-N
BASEBlack-AVPAL-N R 10H MST6U89 (BASE）
BASEBlack-AVPAL-N G 10H MST6U89
BASEBlack-AVPAL-N B 10H MST6U89
White-SV(50) -PAL R 00H MST6U89
White-SV(50) -PAL G 00H MST6U89
White-SV(50) -PAL B 00H MST6U89 S-Video Input(PAL)
Black-SV(50) -PAL R 00H MST6U89 (Difference）
Black-SV(50) -PAL G 00H MST6U89
Black-SV(50) -PAL B 00H MST6U89
White-S(60)－NTSC R 00H MST6U89
White-S(60)－NTSC G 00H MST6U89
White-S(60)－NTSC B 00H MST6U89 S-Video Input(NTSC )
Black-S(60)－NTSC R 00H MST6U89 (Difference）
Black-S(60)－NTSC G 00H MST6U89
Black-S(60)－NTSC B 00H MST6U89
White-RFPAL-M R White-RF S R 00H MST6U89
White-RFPAL-M G 00H MST6U89
White-RFPAL-M B 00H MST6U89 TV Input(PAL-M)
Black-RFPAL-M R 00H MST6U89 (Difference）
Black-RFPAL-M G 00H MST6U89
Black-RFPAL-M B 00H MST6U89
White-RFN R 00H MST6U89
White-RFN G 00H MST6U89
White-RFN B 00H MST6U89
Black-RFN R 00H MST6U89 TV Input(NTSC)
Black-RFN G 00H MST6U89 (Difference）
Black-RFN B 00H MST6U89
White-RFPAL-N R 00H MST6U89
White-RFPAL-N G 00H MST6U89
White-RFPAL-N B 00H MST6U89
Black-RFPAL-N R 00H MST6U89 TV Input(PAL-N)
Black-RFPAL-N G 00H MST6U89 (Difference）
Black-RFPAL-N B 00H MST6U89
HST KEYWORD 6DH Micon

-15-
Service Adjustments
CAUTION !
Do not attempt to adjust service adjustments not listed below otherwise it may cause loss of performance and for
correct operation.
■ Setting the Initial data
This adjustment is controlled by the CPU (IC8000) through the IIC Bus Data Line in the chassis, and those adjustment
data are memorized the memory IC (IC8002). Therefore, Main board or the memory IC (IC8002) is replaced, these
data will be disappeared. Readjust should be made. Initial data is provided in the CPU ROM, when the memory IC
(IC8002) is replaced with new one. CPU ROM data is loaded into the memory. Initial data is provided to operating the
monitor basically. For operating the monitor quality performance, further adjustment is required following chassis elec-
trical adjustment.
1. Receive good quality signal.
2. Enter the Service Mode.
3. Confirm data value to be the same as the Service Adjustment Data Table. If it is different, change to correct data
4. Exit the Service Mode.
■ White balance Adjustment
Pattern
White Pattern 80% (in AV mode).
Condition
Picture Mode: STANDARD
Color Temperature: NORMAL
Aging Time: More than 10 minutes
Adjustment
1. Enter the FACTORY MENU.
2. Select WHITE BALANCE by pressing or button, and then pressing + or - button to enter it.
3. To adjust Red : Press 1 (data value up) and 4(data value down).
To adjust Green : Press 2 (data value up) and 5 (data value down).
To adjust Blue : Press 3 (data value up) and 6 (data value down).
4. Decide one item in three items to a fixed value (For example, let R be fixed value as following picture.), select
item of other 2 colors (Example, G or B as following picture), and adjust to produce a normal black and white pic-
ture in highlight areas.
(Note: At this time, Adjust the other 2 colors data less than fixed data.)
5. Exit the FACTORY MENU.
After adjustment, confirm white balance again by normal picture.
White Balance Adjust
Red Green Blue
75 70 71

Mechanical Disassembly
-16-
[ Disassembly Diagram ]
CABINET FRONT
BUTTON UNIT
CABINET BACK
DEC. RC
STAND BASE
PANEL HOLDER CHASSIS BASE
SPEAKER
TERMINAL BASE
MOUNTING PANEL

-17-
Mechanical Disassembly
1. Stand Removal
1. Remove 10 screws and remove the Stand.
Stand

-18-
Mechanical Disassembly
2. Cabinet Back Removal
1. Remove 20 screws and take the Cabinet Back off.
Note: Cabinet Back can be removed even if it does not remove a stand.

-19-
Mechanical Disassembly
3. Circuit Board Removal
1. Remove 6 screws and take ASSY, PWB, POWER off.
2. Remove 6 screws on the circuit board and then take ASSY, PWB, MAIN off .
3. Remove 3 screws and take ASSY, PWB, KEY off .
4. Remove 2 screws and take TERMINAL BOARD off .
ASSY, PWB, POWER
ASSY, PWB, MAIN
TERMINAL BOARD
ASSY, PWB,
KEY

-20-
Mechanical Disassembly
4. LCD Panel Removal
1. Remove 5 screws and take HOLDER CHASSIS BASE off.
2. Remove 12 screws and take MTG STAND BRKT off.
3. Remove 16 screws and take HOLDER off, then take PANEL off.
HOLDER CHASSIS BASE
MTG STAND BRKT
PANEL HOLDER
HOLDER
HOLDER