Sanyo 23XP2 Schematic
SERVICE MANUAL LCD Television
N2RY
FILE NO.
Model No. LCD-23XP2
(Australia / New Zealand)
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
foreign countries where the television
transmission system and power source
differ from the design specifications. Refer
to the specification table.
Product Code:111374318
REFERENCE NO.SM3010064
Original Ver sion
Chassis Series: UK1-A
Service Ref. No. LCD-23XP2-00
Contents
Safety Notice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Chassis Block Diagrams . . . . . . . . . . . . . . . . . . . . . . 4-5
CPU Port Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Option Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
On-screen Service Menu System . . . . . . . . . . . . . . 8-10
Service Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . 11
Protection Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Mechanical Disassembly . . . . . . . . . . . . . . . . . . . 13-17
Cabinet Parts List . . . . . . . . . . . . . . . . . . . . . . . . . 18-19
Chassis Electrical Parts List . . . . . . . . . . . . . . . . . 20-28
Printed Wiring Board . . . . . . . . . . . . . . . . . . . . . . 29-31
-/- -
TV /
A•B
?
WIDE
-/- -
CS
P
P
MENU
P
i
F/OK
P
BASS
SURROUND
X
TXT/TV
JXPLC
580 81 176
106
514
333 257
290
178
444
480
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 particular ly recommended that only parts designated on the par ts 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 .
[ Details of Dimensions ]
(Unit : mm)
Specifications
-3-
Power Source Monitor: DC24V
AC Adaptor: AC100-264 Volts, 50/60Hz, Output DC24V
Colour System PAL/SECAM
(Video Terminal Input: PAL/SECAM/NTSC3.58/PAL-60Hz)
Sound System B/G, D/K, I
Channel Coverage
VHF: 0-11, 5A (Australia), 1-11 (New Zealand), E2-E12, R1-R12
UHF: 21-69
CATV: S1 - S41, X, Y, Z, Z+1, Z+2
Aerial Input Impedance 75 Ω
LCD Panel
Screen Size (Measured Diagonally): 23 inch (58.4 cm)
Picture Resolution: WXGA 1280 (Horiz.) x 720 (Vert.) pixels
Viewing Angles: Horiz. 176˚, Vert. 176˚
Contrast Ratio: 800:1
Brightness: 550 cd/m
2
Response Time: 8 ms
Audio Output (RMS) 5W+5W
Speakers 5 cm x 9 cm x 2 pcs.
AV Terminals
AV1 CENELEC Standard
Input: Composite video, RGB and audio-L/R
Output:TV-output with composite video and audio-L/R
AV2 CENELEC
Standard
Input: Composite video, RGB, S-video and audio-L/R
Output: Monitor-output with composite video and audio-L/R
AV3 RCA J
acks Input: Composite video and audio-L/R
Headphone Jack Mini Stereo Jack x 1
Net Weight Approx. 9.4 Kg (Included Swivel Stand)
Dimensions: 580(W) X 480(H) X 257(D) mm (Included Swivel Stand)
Specifications subject to change without notice.
-4-
Chassis Block Diagrams
(Video Signal Lines)
(WXGA)
LCD PANEL
K7H
Y/U/V
16/17/19
LVDS0N
LVDS0P
LVDS1N
B14/A15/B15
LVDS1P
POWER
INDICATOR
AE20
A1901
RC-IN
AA25
LVDS2N
LVDS2P
LVDS_CLKN
ASSY,PWB, LED
LVDS_CLKP
LVDS3N
LVDS3P
STAND-BY &
LED
D1901
K29A
KA
RC RECEIVER
ASSY,PWB, KEY
K29C
KC
POWER
SW2951~
SW2957
KEY IN
KEY IN
AE25
TOP CONTROL
AE22
KEYS
AD19
AC19
SCL
SDA
6
5
IC801
MEMORY
IC2001
PICTURE IMPROVEMENT
ASSY, PWB, SIGNAL
IF
6/8/9
X121
SAW
Y/U/V
FILTER
VIF
F26/Y25/Y26
K23 / K24
B19
D23
COMPISITE VIDEO IN
IC1205
RGB SW
16
H3/R3/U3
RGB
IC201
IF/VIDEO/CHROMA/CPU/
Y23/Y24/Y25
SCALER/TELETEXT/AUDIO CONTROL
IC4001
V23
U23
V24
G
B
R
AV2-B
AV1-B
8
3
6
11
1
AV1-G
AV1-R
AV2-R
9
14
5
G
AV2-G
D18
C18
B23
VIDEO MONITOR OUT
B21
FLASH MEMORY
KX
A101
TUNER
COMPISITE
VIDEO IN
(AV3)
K29A
TV WITH COMPISITE VIDEO OUT
COMPISITE VIDEO IN
R IN
20
19
(AV1)
SCART-1
15
G IN
11
B IN
7
R IN
(AV2)
SCART-2
15
G IN
11
B IN
COMPISITE VIDEO/Y IN
S-VIDEO-C IN
7
20
15
19
V
SIDE AV
(AV3)
ASSY, PWB,
-5-
Chassis Block Diagrams
(Audio Signal Lines)
R
K001
SP901
L-OUT
HEADPHONE JACK
K29F
SIDE-AV
ASSY, PWB,
R-OUT
SP902
A1901
STAND-BY &
D1901
ASSY,PWB, LED
K29A
POWER
INDICATOR
LED
RC RECEIVE
ASSY,PWB, KEY
K29C
SW2951~
SW2957
TOP CONTROL
KEYS
IC001
AUDIO AMP.
KF
12
8
2
4
X122
AUDIO L-OUT
AUDIO R-OUT
AUDIO R
AUDIO L
SAW
FILTER
SIF
D17
C17
H23 /J23
F23
E25
C21
A23
IC201
KA
AE20
IF/VIDEO/CHROMA/CPU/
SCALER/TELETEXT/AUDIO CONTROL
C16
D16
RC-IN
AA25
F24
F25
KC
POWER
KEY IN
KEY IN
AE25
B20
AE22
A20
AD19
AC19
SCL
SDA
6
5
IC801
MEMORY
ASSY, PWB, SIGNAL
IF
A101
TUNER
EXT. AUDIO R-IN (AV3)
EXT. AUDIO L-IN (AV3)
KX
TV AUDIO OUT-L
TV AUDIO OUT-R
1
(AV1)
SCART-1
EXT. AUDIO IN-L (AV1)
EXT. AUDIO IN-R (AV1)
3
6
2
AUDIO MONITOR OUT-R
AUDIO MONITOR OUT-L
3
1
(AV2)
SCART-2
EXT. AUDIO IN-R (AV2)
EXT. AUDIO IN-L (AV2)
2
6
SIDE-AV
ASSY, PWB,
(AV3)
L-IN
K29X
R-IN
R
L
CPU Port Functions (IC201)
-6-
Pad No. Function Name Pad Name Description
163 (AE9) A16 INT_N/GPIO10/A16 Interrupt request output, general purpose I/O
273 (G3) SCL SCL/GPIO12 I2C clock HS-I2C 3.4MHz, general purpose I/O
189 (F2) SDA SDA/GPIO13
272 (H3) Text Reset GPIO9/ACLK General purpose I/O / Analog video clock I/O
349 (H4) LCD-BR GPIO4/PWM1/TCP_TDO General purpose I/O / Pulse width modul. output / Test control
93 (J1)
NRESET/FPGA
reset KBD0 Keyboard ADC input (Scaler) -Not used92 (K1) A17 A17 / GPIO11 Memory address bus, general purpose I/O
185 (K2) Scart-3 8-pin input A17 / GPIO11 Keyboard ADC input (Scaler) -Not used91 (L1) UART for test GPIO6 General purpose I/O
346 (L4) Text/RF sw PWM0 Pulse width modulated backlight brightness control
81 (AA1) PC VSCL ASCL / GPIO14 DDC clock 400 KHz, general purpose I/O
174 (AA2) PC VSDA ASDA / GPIO15 DDC data 400 KHz, general purpose I/O
97 (E1) LCD-ON GPIO3 / TRST
102 (B3) PC-Det GPIO0 /T0/ TMS -Not used352 (E4) Scart-3 sw GPIO1 /T1/ TD1 -Not used276 (D3) Scart-3 sw GPIO2 /TCK -Not used98 (D1) UART for test RXD/GPIO5
166 (AE6) WE for Flash WR-N / GPI8
313 (AA23) NVM-WE P1.1 / T0 Port 1.1 or Counter Timer 0 input
232 (AA24) Line off input P1.1 / INT1 Port 1.0 or external interrupt 1
143 (AA25) RC input INT0 / P0.5 External interrupt 0 or port 0.5
320 (AC18) Status input P0.2 / I2SDO2 Port 0.2 or I2S digital output 2
319 (AC19) I2C SDA P1.7 / SDA Port 1.7 or I2C bus data line
241 (AD18) Power Error 2 P0.3 / I2SCLK Port 0.3 or I2S clock
240 (AD19) I2C SCL P1.6 / SCL Port 1.6 or I2C clock line
239 (AD20) RGB selector P2.2 / PWM1 Port 2.2 or PWM1 output
238 (AD21) Scart-2 8-pin input P3.1 / ADC1 Port 3.2 or ADC1 input
154 (AE18) Power Error 1 P0.4 / I2SWS Port 0.4 or I2S Word Select
153 (AE19) Power-2 ON/OFF P1.3 /T1 LVDS on 20” model only (H=ON)
152 (AE20) Power LED P2.1 / PWM0 Port 2.1 or PWM0 output (H= LED ON)
151 (AE21) Scart-1 8-pin input P3.0 / ADC0 Port 3.0 or ADC0 input
150 (AE22) Key input P3.3 / ADC3 Port 3.3 or ADC3 input
149 (AE23) L/L’/AV2 SW P2.5 / PWM4 Port 2.2 or PWM4 output
148 (AE24) DM Power Error P1.4 / RX Port 1.4 or UART bus
147 (AE25) Power key input P1.5 / TX Port 1.5 or UART bus
59 (AF18) Power-3 ON/OFF P0.1 / I2SDO1 Panel Power ON 20” model only (H=ON)
58 (AF19) Power-1 ON/OFF P0.0 / I2SDI1/O 3.3V, 5V Panel Power ON (L=ON)
57 (AF20) (118-pin Reset) P2.0 / TPWM Port 2.0 or Tuning PWM output
56 (AF21) 50/60 P2.3 / PWM2 Port 2.3 or PWM2 output (23” model only, 50=H, 60=L)
55 (AF22) AGC input for factory P3.2 / ADC2 Port 3.2 or ADC2 input
54 (AF23) Sound mute P2.4 / PWM3 Port 2.4 or PWM3 output
53 (AF24) Scar t-1 SW P1.2 / INT2 Port 1.2 or external interrupt-2
Option Setting
-7-
After replacing Memory IC (IC801)
The memory IC (IC801), stores the option data of TV set and service adjustments data for each circuit, therefore, when
the memory IC is replaced, it should be programmed to the following settings and “ Service Adjustment” on page 11.
1) How to enter the Option Setting Mode
Press and hold the F/OK button on the remote control and press the Programme Down (P▼)button on the top
control panel of the TV.The option window will appear on the screen.
P
Option Setting Mode
2) How to make the Option Setting
Select desired option item by pressing the Programme Up or Down button.
To switch the option mode, use the Volume + or -button.
The data which is set in the option mode is stored into the memory IC automatically.
The following table shows the available option items and default setting mode.
Option Items Mode Default / Description
Country EU, UK, IRE or AUS Default “AUS”(Australia) / Shipping country selection.
Sort mode Sor ting or Tuning Default “Tuning”
Plug & Play On or Off Default “On” / Disable or enable Plug & Play function.
Welcome text On or Off Default “On” / Display message when first set up.
Surround On or Off Default “On” / Disable or enable Surround function.
Incase of inactive, the Sound menu will have no “Surround” item.
Bass feature Vir tual sub woofer, Default “BBE+Bass expander” / Bass feature selection.
BBE+Bass expander Incase of “Off”, item of Bass feature in Sound menu will be “Bass
or Off expander”.
AVL On or Off Default “Off” / Disable or enable “Auto Volume Level”function.
AV3 On or Off Default “On” / Disable or enable “AV3”.
Colour system On or Off Default “Off ” / Disable or enable Colour system function on Preset
menu.
AFC On or Off Default “Off” / Disable or enable Automatic Frequency Control
function on Preset menu.
Program name On or Off Default “Off” / Disable or enable Program name function item on
Preset menu.
Text no signal Cn or Off Default “On”/ In case of “On”, Teletext feature may not work under
the no signal.
Blue Back On or Off Default “On”/ Disable or enable AV blue back under the no signal.
Digital mode On or Off Default “Off” / Disable or enable digital mode.
Scart 1 or 2 Default “ 2 ”/ Selection the number of Scart.
OSD H-Pos 0 to 15 Default “ 6 ”/ OSD horizontal position adjustment
3) Exit from the Option Mode
Press the MENU button or tur n off the TV set by pressing the Power ON/OFF button.
The item not displayed exists when a triangular mark is
displayed.Press P or P button to scroll the screen.
MENU
P
i
F/OK
P
Option
Country
Sort mode
Plug & Play
Welcome text
Surround
Bass feature
AVL
AV3 On
AUS
Sorting
On
On
On
BBE+Bass expander
Off
-8-
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.
3) Exit from the Service Menu
Press the OK button or tur n off the TV set by pressing the Power ON/OFF button.
148
Auto White Bal
SAGR
2) How to make the Adjustments:
Press the Programme Up or Down button on the remote control hand set to select service menu item.
Use Volume + or -button to adjust the data.The + or-key will increase or decrease the data sequentially.
On-screen Service Menu System
1) How to enter the Service Menu
Press and hold the Green button of the remote control and press the Programme Down (P▼)button on the top
control panel of the TV
Item No.
Adjustment Item
Adjustment Data
-/- -
BASS
SURROUND
TXT/TV
X
P
32
01110010 00000000
01010001 01011111
Example of the Service Mode Display
000
GTV 4. 0
UK1A
02. 12
01110010 00000000
01010001 01011111
Software Version Information
Read Status
Item No.
Section
-9-
On-screen Service Menu System
On-screen Service Menu
Important Note: All data except in gray box area is fixed. Do not change for correct operating. Data in gray box
area is initial. Can be set according to adjustment information on page 11.
No. Title Explanation Initial Value
000 UK1A GTV software version information 001 Init TV Initialize TV 0
002 ISP Mode Enter ISP mode 0
003 Sedna version Sedna version information 004 PWT Power time 1
005 DCXO DCXO scanning control center 88
006 DCXO Auto DCXO auto adjustment 0
007 WSS Zoom option 1
008 WPR White point Red 20
009 WPG White point Green 20
010 WPB White point Blue 20
011 BLOR Black level offset Red 20
012 BLOG Black level offset Green 20
013 WPR-SECAM SECAM offset for WPR 0
014 WPG-SECAM SECAM offset for WPG 0
015 WPB-SECAM SECAM offset for WPB 0
016 BLOR-SECAM SECAM offset for BLOR 0
017 BLOG-SECAM SECAM offset for BLOG 0
018 (Reserve) (Not used) 019 (Reserve) (Not used) 020 RGB Bright RGB brightness 29
021 TXT MIN TEXT brightness min. 6
022 TXT MID TEXT brightness mid. 16
023 TXT MAX TEXT brightness max. 31
024 BR RF PN Offset Brightness RF PAL/NTSC 245
025 BR AV Offset Brightness AV PAL/NTSC 245
026 BR RGB Offset Brightness AV RGB 245
027 BR S Offset Br ightness SECAM 245
028 CN RF PN Offset Contrast RF PAL/NTSC 0
029 CN AV Offset Contrast AV PAL/NTSC 0
030 CN RGB Offset Contrast AV RGB 0
031 CN S Offset Contrast SECAM 0
032 CN RF PN Offset Sharpness RF PAL/NTSC 0
033 SH AV Offset Sharpness AV PAL/NTSC 0
034 SH RGB Offset Sharpness AV RGB 0
035 SH S Offset Shar pness SECAM 0
036 CL RF P Offset Colour RF PAL 0
037 CL AVP Offset Colour AV PAL 0
038 CL N Offset Colour NTSC 0
039 CL S Offset Colour SECAM 0
040 CL RGB Offset Colour AV RGB 0
041 PV-BR-DY Preset Movie Brightness 40
042 PV-CL-DY Preset Movie Colour 40
043 PV-CT-DY Preset Movie Contrast 63
044 PV-SH-DY Preset Movie Sharpness 32
045 PV-BR-ST Preset Sport Br ightness 32
046 PV-CL-ST Preset Sport Colour 32
047 PV-CT-ST Preset Sport Contrast 45
048 PV-SH-ST Preset Sport Shar pness 32
049 PV-BR-EC Preset Weak Signal Brightness 22
050 PV-CL-EC Preset Weak Signal Colour 40
051 PV-CT-EC Preset Weak Signal Contrast 32
052 PV-SH-EC Preset Weak Signal Sharpness 32
053 CLO SECAM Center frequency of cloche filter 0
054 DTR SECAM Chroma trap mode 0
055 YSECAM Y-delay adjustment 12
056 YNTSC Y-delay adjustment 0
057 YPAL Y-delay adjustment 4
058 YAV Y-delay adjustment 4
059 ACL Automatic colour limiting 0
060 MUS NTSC matrix 0
061 PWLDAC Peak White limiting 8
062 CB CB default 0
063 CB PF PAL CB for RF PAL 0
064 CB AV NT CB for AV NTSC 0
065 BPS Bypass of chroma base-band delay line 0
066 FCO Forced colour-on 0
067 PeakFreqPAL443 Peaking center frequency and delay 3
068 PeakFreqPALM Peaking center frequency and delay 3
069 PeakFreqPALN Peaking center frequency and delay 3
070 PeakFreqNTSC443 Peaking center frequency and delay 3
071 PeakFreqNTSCM Peaking center frequency and delay 3
072 PeakFreqSECAM Peaking center frequency and delay 3
073 PeakFreqAV Peaking center frequency and delay 3
074 Tint Def
Base-band tint control
32
075 Tint NT Tint for NT 0
076 Blackstretch Black stretch 1
077 Bluestretch Blue stretch 0
078 Whitestretch Gamma control and white stretch setting 0
079 GAM Gamma control 0
No. Title Explanation Initial Value
080 PWL Peak White limiting 0
081 BSD Black stretch Depth 0
082 AAS Black stretch Area Selection 0
083 PeakRatioOvShot Ratio of positive and negative peak 0
084 RatioPreAftShot Ratio pre and after shoot 0
085 CRAO Coring on SCAVEM 0
086 DL Sets the Interlace 0
087 Tint NTSC Current baseband tint 31
088 OSO Switch-off in vertical overscan 0
089 FSL Forced slicing level for vertical sync. 0
090 HP2 Synchronization of OSD TEXT display 0
091 SoftClipLevel Soft clipping level 0
092 FO Phase 1 0
093 Picture booster Option of TDA9178 1
094 AMS Luminance amplitude input 1
095 LDH Luminance histogram 1
096 FHS Line frequency selection 0
097 WLB Window letterbox format 1
098 DEM Demodulation mode on/off 0
099 CD2-O Chroma delay 0
100 OSP Overrule smart peaking 0
101 WPO White point stretch off 0
102 DSK Dynamic skintone on/off 1
103 ASK Dynamic skintone angle 0
104 WSK Dynamic skintone width 0
105 SSK Dynamic skintone size 1
106 DGR Green enhancement on/off 1
107 GGR Green enhancement gain 0
108 WGR Green enhancement width 0
109 SGR Green enhancement size 1
110 DBL Blue stretch on/off 0
111 GBL Blue stretch gain 0
112 SBL Blue stretch size 0
113 BON Black offset on/off 0
114 BT5-0 Adaptive black stretch 0
115 NL5-0 Non linearity amplifier 0
116 VG5-0 Variable gamma 32
117 9178 CFS-RF Contour filter section for RF 1
118 9178 VDC-RF Video dependent coring on/off for RF 1
119 9178 CDS-RF Colour sharpness on/off for RF 0
120 9178 CTI-RF Colour transient improvement on/off for RF 1
121 9178 PK-RF Peaking amplitude for RF 35
122 9178 SP-RF Steepness correction for RF 32
123 9178 CR-RF Coring Level for RF 32
124 9178 LW-RF Line width for RF 32
125 UOC COR-RF Video dependent coring (peaking) for RF 3
126 UOC PeakFreq-RF Peaking control for RF 3
127 SCA Lit H Flt-RF Sharpness Horiz. Filtering for RF 30
128 SCA Lit V Flt-RF Sharpness Vert.Filtering for RF 27
129 9178 CFS-AV Contour filter section for AV 1
130 9178 VDC-AV Video dependent coring on/off for AV 1
131 9178 CDS-AV Colour sharpness on/off for AV 0
132 9178 CTI-AV Colour transient improvement on/off for AV 1
133 9178 PK-AV Peaking amplitude for AV 35
134 9178 SP-AV Steepness correction for AV 32
135 9178 CR-AV Coring Level for AV 20
136 9178 LW-AV Line width for AV 32
137 UOC COR-AV Video dependent coring (peaking) for AV 3
138 UOC PeakFreq-AV Peaking control for AV 3
139 SCA Lit H Flt-AV Sharpness Horiz. Filtering for AV 30
140 SCA Lit V Flt-AV Sharpness Vert. Filtering for AV 27
141 HPOS50 Horizontal position for 50Hz 425
142 VPOS50 Vertical position for 50Hz 14
143 HPOS60 Horizontal position for 60Hz 396
144 VPOS60 Vertical position for 60Hz 16
145 SACR ADC Clamp Red 17
146 SACG ADC Clamp Green 17
147 SACB ADC Clamp Blue 17
148 SAGR ADC Gain Red 31
149 SAGG ADC Gain Green 31
150 SAGB ADC Gain Blue 31
151 (Reserve) (Not used) 32
152 (Reserve) (Not used) 63
153 (Reserve) (Not used) 41
154 (Reserve) (Not used) 58
155 (Reserve) (Not used) 63
156 OP AUDIO CONFIG (Not used) 2
157 OP DUB DBE DBE/DUB/BBE control for study 0
158 AVL-LEV AVL reference level 5
159 AVL-WGT AVL weighting filter 0
-10-
On-screen Service Menu System
No. Title Explanation Initial Value
160 AVL-MOD AVL decay time 3
161 LOUD-NA Main loudness none attack volume level 3
162 LOUD-CH Main loudness filter characteristic 0
163 BBE-CONT BBE contour value 10
164 BBE-PROC BBE process value 10
165 OP CLIP Clip management 0
166 ADC-AV-L Level adjust ADC 16
167 DEC-LEV Level adjust DEC 16
168 MONO-LEV Level adjust MONO 16
169 NIC-LEV Level adjust NICAM 16
170 SAP-LEV Level adjust SAP 16
171 E2D Audio output signal on the AUDEEM pin. 0
172 FFI
Value of the last set in video signal
process
0
173 MR VOL L
Master volume Low
63
174 MR VOL H
Master volume High
4
175 L HI CUT Equalizer MAIN channel band 5 (8000Hz) 26
176 ASD SC1 THR 16
177 AGN Gain FM demodulator 0
178 OVMADAPT FM over modulation adaptation 1
179 OVMTHR
Over modulation level threshold relative
to nominal
3
180 CHSE PAL/NTSC ident sensitivity 2
181 NLEL NICAM lower error limit 100
182 NUEL NICAM upper error limit 200
183 DSG Gai audio in out 1
184 FMWS Window size for FM demodulator 1
185 CV2 CVBS2 input signal selection 0
186 PA-BA-MU 48
187 PA-TR-MU 45
188 PA-BA-TK 34
189 PA-TR-TK 40
190 PA-BA-NR 32
191 PA-TR-NR 32
192 BEEP-VOL Alarm beeper volume 25
193 BEEP-FRQ Alarm beeper frequency 4
194 AGC Speed IF AGC speed 1
195 AGC Take over AGC take over 23
196 OIF Offset IF demodulator 32
197 VA Video output signal amplitude 3
198 VAI System I output signal amplitude correction 0
199 SVO Function of IFVO/SVO/CVBS1 pin 0
200 GD Group delay on CVBS1 signal 1
201 BPB
Bypass of sound bandpass filter
at mono mode
0
202 BPB2 Bypass of sound bandpass filter section 2 1
203 TXT-H-POS 10
204 TXT-H-POSA (Not used) 24
205 TXT-H-POSB (Not used) 6
206 OSD-H-POS 6
207 CL Cathode drive level 0
208 PGR Preset Gain Red 45
209 PGG Preset Gain Green 45
210 PGB Preset Gain Blue 45
211 Back Light Back-light 63
212 BL PWMMin Back-light PWM Min. control 0
213 BL PWMMax Back-light PWM Max. control 255
214 BL PWMFreq Back-light PWM Frequency control 240
215 GAMMA Ganma 32
216 BRIFE Brightness control 52
217 SATBE Saturation control 23
218 CONBE 41
219 PANEL (Not used) 0
220 LPG RGB gain preset 1
221 EGL Enable gain loop in the CCC system 0
222 RBL RGB blanking 0
223 Scan Time Auto Scan Time/Min. value=0x04 6
224 Phi1
Phase 1 time constant
(Should be set very slow.)
2
225 (Reserve) (Not used) -
226 (Reserve) (Not used) 227 (Reserve) (Not used) 228 (Reserve) (Not used) 229 (Reserve) (Not used) 230 (Reserve) (Not used) 231 (Reserve) (Not used) 232 (Reserve) (Not used) -
233 POS change
Post VIDEO & SOUND mute time
POS change to with ident channel.
18
234 POS chg no sig
Post VIDEO & SOUND mute time
POS change to with no ident channel.
10
235 Zoom or Text
Post VIDEO & SOUND mute time
at zoom mode change and text mode.
35
236 NICPLIM DCXO scaling control limit 150
-11-
Service Adjustments
Important Notice:
Do not attempt to adjust service adjustments not listed below otherwise it may cause loss of performance and for
correct operation.
DCXO Adjustment
This adjustment is required when the crystal oscillator
(X201 or X4001) is replaced.
1. Receive BG NICAM signal.
Set the brightness and contrast to normal.
2. Enter the ser vice mode, and select item No.006 DCXO
Auto with ▲ or ▼ key.
3. Press (Volume +) key, and the adjustment will start,
then adjustment data will be changed automatically as
follows;
“0” --> “1” --> “0”
(Oscillation frequency adjustment will be completed
automatically.)
AGC Adjustment
1. Receive PAL colour bar pattern.
(ANT Input Level:65dBµV 75 ohms terminated)
2. Connect a Digital Volt Meter to Tuner-AGC terminal and
the ground.
3. Enter the Ser vice Mode, and select item No.195 AGC
Take over with ▲ or ▼ key.
4. Adjust voltage of Tuner-AGC to become 3.2V±0.3V DC
with or key.
White Balance Adjustment
[ Setting ]
1. Connect a colour-bar generator to the external
(composite) video input terminal (AV1, AV2 or AV3
terminal), and input a White Pattern (80%).
2. Set the television to following conditions:
Screen Size: FULL
Picture Mode: Dynamic
[ White Balance Adjustment ]
1. Enter the Ser vice Mode.
Adjustment Item:
No. 148 SAGR (ADC Gain Red)
No. 149 SAGG (ADC Gain Green)
No. 150 SAGB (ADC Gain Blue)
2. Decide a fixed item which is maximum value
(Example, let 32 of No. 148 SAGR be maximum
value), select item of other 2 colours (Example, No.
149 SAGG or No. 150 SAGB) with ▲ or ▼ key, and
adjust to produce a normal black and white picture in
highlight areas with or key.
After adjustment, confirm white balance again by
normal picture.
Note: Adjusted data is less than the fixed data.
Black Balance Adjustment
[ Setting ]
1. Connect a colour -bar generator to the external
(composite) video input terminal (AV1, AV2 or AV3
terminal), and input a dark gray pattern (10% white).
2. Set the television to following conditions:
Screen Size: FULL
Picture Mode: Dynamic
[ Black Balance Adjustment ]
1. Enter the Service Mode.
Adjustment Item:
No. 145 SACR (ADC Clamp Red)
No. 146 SACG (ADC Clamp Green)
No. 147 SACB (ADC Clamp Blue)
2. Decide the fixed item which is maximum value
(Example, let 17 of No. 145 SACR be maximum
value), select item of other 2 colours (Example, No.
146 SACG or No. 147 SACB) with ▲ or ▼ key, and
adjust to produce a normal black and white picture in
dark gray areas with or key.
After adjustment, confirm white balance again by
normal picture.
Note: Adjusted data is less than the fixed data.
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