Funai LCD A2004 User Manual

							15″/20″ COLOR LCD TELEVISION
LCD-A1504
LCD-A2004
The LCD panel is manufactured to provide many years of useful life.
Occasionally a few non active pixels may appear as a tiny spec of color.
This is not to be considered a defect in the LCD screen.
 
						

							1-1 L4100SP
SPECIFICATIONS
ANT. Input ------------------- 80 dBµV, Video: PAL 87.5%, Audio: 30 kHz dev (1 kHz Sin)
Test Input Signal ----------- 400Hz 30% modulation



All items are measured across 8Ω load at speaker output terminal with L.P.F.
Note:
Nominal specifications represent the design specifications. All units should be able to approximate these. Some 
will exceed and some may drop slightly below these specifications. Limit specifications represent the absolute 
worst condition that still might be considered acceptable. In no case should a unit fail to meet limit specifications.Description Condition Unit Nominal Limit
1. Intermediate Freq. Picture
SoundMHz
MHz45.75
41.25-
-
2. Color Killer Sens. CH-3 dBµV 20 23
3. AFT Pull In Range
(10mV input)– MHz ±1.6 ±0.7
Description Condition Unit Nominal Limit
1. Number of Pixels Horizontal
Ve r t i c a lpixels
pixels640 x 3
480-
-
2. Brightness
cd/m
2450 -
3. Response Time - msec 16 -
4. Support Color - - 16mil.(8bit) -
5. Viewing Angle Horizontal
Ve r t i c a l°
°-85 to 85
-85 to 70-
Description Condition Unit Nominal Limit
1. Over Scan Horizontal
Ve r t i c a l%
%8.5
6.510±5
10±5
2. Color Temperature -
x
y°K 8500
0.29
0.30-
0.29±0.03
0.30±0.03
3. Resolution Horizontal
Ve r t i c a lline
line400
350
						

							4-3 L4100DC
Wiring Diagram
Fig. D3
T402
CN101A CN102A
CN31A
CN31B CN801CN802
To Speaker To LCD Module 
AssemblyTo LCD Module Assembly
Function CBAMain CBA LCD Main CBA
To Speaker CN103A CN101BCN320A CN321A
CN102B CN103B
T401
 
						

							4-6 L4200DC
Cable Wiring Diagram
Fig. D3
T1402
CN101A CN102A
CN53 CN405
CN1401CN51
CN51A CN801CN802
To SpeakerTo LCD Module Assembly
Function CBA IR Sensor CBA Inverter CBAMain CBA LCD Main CBA
To Speaker CN103A CN101BCN310A CN311ACN313A
CN102B CN103B
T1401
T1404
To LCD 
Module
Assembly To LCD 
Module
Assembly
T1403
 
						

							5-1 L4100INT
HOW TO INITIALIZE THE LCD TELEVISION
To put the program back at the factory-default, 
initialize the LCD television as the following procedure.
How to initialize the LCD television:
1. Turn the power on. (Use main power on the TV 
unit.)
2. To enter the service mode, press [STANDBY], [2], 
[7], [1], and [MUTE] buttons on the remote control 
unit in that order within 5 seconds.
- To cancel the service mode, press [STANDBY] 
button on the remote control.
3. To initialize the LCD television, press “DISPLAY” 
button on the remote control unit. 
4. Confirm FF indication on the upper right of the 
screen.
 
						

							6-1 L4100EA
ELECTRICAL ADJUSTMENT INSTRUCTIONS
General Note: 
“CBA” is abbreviation for “Circuit Board Assem-
bly.”
NOTE:
Electrical adjustments are required after replacing 
circuit components and certain mechanical parts. It is 
important to perform these adjustments only after all 
repairs and replacements have been completed. 
Also, do not attempt these adjustments unless the 
proper equipment is available.
Test Equipment Required
1. DC Voltmeter
2. Pattern Generator
3. Color Analyzer
How to Set up the Service mode:
1. Turn the power on. (Use main power on the TV 
unit.)
2. Press [STANDBY], [2], [7], [1], and [MUTE] buttons 
on the remote control unit in that order within 5 
seconds.
- To cancel the service mode, press [STANDBY] 
button on the remote control.
1. Initial Setting
General
Enter the Service mode. 
Set the each initial data as shown on table 1 below. 
Table 1: Initial Data 
ITEMBUTTON(on the remote 
control)
DATA VALUE
LCD-
A1504LCD-
A2004
 BRT(PAL)
MENU → 1130 134
 CNT(PAL) 174 174
 CLR-R(PAL) 78 74
 CLR-B(PAL) 78 74
 SHR(PAL) 143 143
 S-BRT(PAL)
MENU → 2130 134
 S-CNT(PAL) 174 174
 S-CLR-R(PAL) 78 74
 S-CLR-B(PAL) 78 74
 S-SHR(PAL) 143 143
 C-BRT(PAL)
MENU → 3134 134
 C-CNT(PAL) 122 132
 C-CLR-R(PAL) 156 154
 C-CLR-B(PAL) 156 154
 C-SHR(PAL) 143 143
 BRT(SECAM)
MENU → 4130 134
 CNT(SECAM) 174 174
 CLR-R(SECAM) 78 74
 CLR-B(SECAM) 78 74
 SHR(SECAM) 143 143
 S-BRT(SECAM)
MENU → 5130 134
 S-CNT(SECAM) 174 174
 S-CLR-R(SECAM) 78 74
 S-CLR-B(SECAM) 78 74
 S-SHR(SECAM) 143 143
 C-BRT(SECAM)
MENU → 6134 134
 C-CNT(SECAM) 122 132
 C-CLR-R(SECAM) 156 154
 C-CLR-B(SECAM) 156 154
 C-SHR(SECAM) 143 143
 BRT(NTSC)
MENU → 7134 134
 CNT(NTSC) 172 174
 CLR-R(NTSC) 78 70
 CLR-B(NTSC) 78 70
 TNT(NTSC) 148 148
 SHR(NTSC) 143 143
 S-BRT(NTSC)
MENU → 8134 134
 S-CNT(NTSC) 172 174
 S-CLR-R(NTSC) 78 70
 S-CLR-B(NTSC) 78 70
 S-TNT(NTSC) 148 148
 S-SHR(NTSC) 143 143
 
						

							6-2 L4100EA
2. +B Adjustment
Purpose: To obtain correct operation.
Symptom of Misadjustment: The picture is dark and
the unit does not operate correctly.
Note: TP401(+B), TP300(GND), VR649 --- Main CBA
1. Connect DC Volt Meter to TP401 and 
TP300(GND).
2. Adjust VR649 so that the voltage of TP401 
becomes +13.0±0.3V DC [LCD-A1504] or 
+21.0±0.3V DC [LCD-A2004].
3. Flicker Adjustment
Adjustment Point: R977 (LCD Main CBA)
1. Enter the Service mode. 
2. Press “2” button on the remote control unit.
The following screen appears.
3. If Flicker Adjustment is not fit, the screen become 
the following.
 4. Adjust R977 so that flash stops.  C-BRT(NTSC)
MENU → 9134 134
 C-CNT(NTSC) 122 132
 C-CLR-R(NTSC) 156 154
 C-CLR-B(NTSC) 156 154
 C-TNT(NTSC) 148 148
 C-SHR(NTSC) 143 143
BRIGHT 0 0 0
NORMAL 0 40 65
DARK 0 95 98
 COR(C/D/S-1) VOL. p→ 1 131 131
 COG(C/D/S-1) VOL. p→ 2 131 131
 COB(C/D/S-1) VOL. p→ 3 131 131
 DR(C/D/S-1) VOL. p→ 4 145 145
 DG(C/D/S-1) VOL. p→ 5 143 143
 DB(C/D/S-1) VOL. p→ 6 140 140
 SBR(C/D/S-1) VOL. p→ 70 0
 SBB(C/D/S-1) VOL. p→ 90 0
 C-COR(C/D/S-2) VOL. p→ 1 131 131
 C-COG(C/D/S-2) VOL. p→ 2 131 131
 C-COB(C/D/S-2) VOL. p→ 3 131 131
 C-DR(C/D/S-2) VOL. p→ 4 145 145
 C-DG(C/D/S-2) VOL. p→ 5 143 143
 C-DB(C/D/S-2) VOL. p→ 6 140 140
 C-SBR(C/D/S-2) VOL. p→ 70 0
 C-SBB(C/D/S-2) VOL. p→ 90 0
7F
VOL. pFF FF
LAST POWER OFF OFF
SYSTEM
PA L - B G PA L - B G
NCM ON ON
ASPECT OFF OFF
RUSSIAN OFF OFF
Test Point Adj. Point
TP401 (+B)
TP300 (GND)VR649
M. EQ. Spec.
DC Voltmeter+13.0±0.3V DC [LCD-A1504]
+21.0±0.3V DC [LCD-A2004] ITEMBUTTON
(on the remote 
control)
DATA VALUE
LCD-
A1504LCD-
A2004
R977 LCD Main CBA
FLASH
(Go and Off)
 
						

							6-3 L4100EA
The following adjustment normally are not 
attempted in the field. Only when replacing the 
LCD Panel then adjust as a preparation.
4. White Balance Adjustment
Purpose: To mix red, green and blue beams correctly
for pure white. 
Symptom of Misadjustment: White becomes bluish
or reddish.
1. Operate the unit for more than 20 minutes.
2. Input the White Purity (APL 80% or APL 40%).
3. Set the color analyzer to the CHROMA mode and 
bring the optical receptor to the center on the 
LCD-Panel surface after zero point calibration as 
shown above.
Note: The optical receptor must be set 
perpendicularly to the LCD Panel surface.
4.[RF/AV2(CVBS)]
Enter the Service mode. Press “VOL p” button on 
the remote control unit and select “C/D/S-1” mode. 
[AV1(RGB)]
Enter the Service mode. Press “VOL p” button on 
the remote control unit and select “C/D/S-2” mode. 
5.[RF/AV2(CVBS)]
When “x” value and “y” value are not within 
specification, adjust “DB (C/D/S-1)” or “DR (C/D/S-
1)”. Refer to “1. Initial Setting.”
Note: “DB(C/D/S1)” or “DR(C/D/S1)” must be 
adjusted within ±10.
[AV1(RGB)]
When “x” value and “y” value are not within 
specification, adjust “C-DB(C/D/S-2)” or “C-DR(C/
D/S-2)”. Refer to “1. Initial Setting.”
Note: “C-DB(C/D/S-2)” or “C-DR(C/D/S-2)” must 
be adjusted within ±10.
6. Turn the power off and on again. (Main power 
button on the TV unit.) Test Point Adj. Point Mode Input
ScreenVOL. p
buttons
[RF/AV2(CVBS)]
    C/D/S-1
[AV1(RGB)]
    C/D/S-2White Purity 
(APL 80%)
or
(APL 40%)
M. EQ. Spec.
Pattern Generator, 
Color analyzerx: 260 to 320,
y: 270 to 330
Figure
Color Analyzer It carries out in a darkroom.
L = 50 cmPerpendicularity
INPUT: WHITE 80%
 
						

							7-1
System Control Block Diagram
L4100BLS
BLOCK DIAGRAMS
KEY-IN-1 44
CN31B
KEY-IN-2 33
RCV30REMOTE
SENSOR
CN31A
FUNCTION CBA
KEY-IN-1 44
CN51A
KEY-IN-2 33
IR SENSOR CBA
CLN53RCV51
D51
RCV-IN 33
REMOTE
SENSOR
IC151
(MICRO CONPUTER)
931052895922
KEY-IN-1 44
CN103B CN103A
RCV-IN 11BACKLIGHT-SW33BACKLIGHT-ADJ22P-ON-H 66PROTECT-1 13 13PROTECT-2 14 14VOLUME 77A-MUTE(NU)88INPUT-0 99INPUT-1 10 10S-SW 15 15SCL 18 18SDA 19 19
16 KEY-IN-1
RCV-IN RESET
P-ON-HPROTECT-1PROTECT-2VOLUME
SDASCLINPUT-0INPUT-1S-SWSCLSDA
88247746277845281311
X151
10MHz
XIN
XOUT
TO POWER SUPPLY
BLOCK DIAGRAM
TO AUDIO
BLOCK DIAGRAM
BACKLIGHT-SW BACKLIGHT-ADJ
P-ON-H PROTECT-1
PROTECT-2
VOLUME
A-MUTEINPUT-0
INPUT-1S-SW
SCL
SDA
MAIN CBA LCD MAIN CBA UNIT
92
KEY-IN-2 55
KEY-IN-2
CN51
CN53
RESET IC1534AL+5V
CN102B
CN102A
EEP-SDA 2EEP-SCL 1BUS-OPEN 4CN105 (NO CONNECTION)
IC152
(MEMORY)
SCL
6
SDA57 WP
26 BUS-OPEN(NU)
AL+5V
AL+5V
CN105 IS 
USED FOR 
ADJUSTMENT
AT FACTORYSCLK 3BUSY 2RXD 4CN104 (NO CONNECTION)EPM(NU) 6CE(NU) 5CNVSS 9RESET 8TXD 10DVP-SOUTDVP-CSDVP-SINMPSEL-0DVP-CLK
DVP-RESET-PC
QHFBIN
BUS-OPEN 2DVP-RESET-PC
8
DVP-CLK-PC
5CN301 (NO CONNECTION)
DVP-SOUT-PC
6
DVP-SIN-PC
7
DVP-CS-PC
4
MPSEL-0 3
Q1563.3V5V
CONVERTER Q1553.3V5V
CONVERTER Q1523.3V5V
CONVERTER
Q1543.3V5V
CONVERTER Q1533.3V5V
CONVERTER
REG+3.3V
25192DVP-SOUT
2DVP-CS 2DVP-CLK42DVP-SIN379H-SYNK 2DVP-RESET3039314432
9190
7
56
29
AFT-IN 11 11P-ON-H2 22 22
AFT-IN P-ON-H2 PROTECT-3
PROTECT-3 16 16BUS-OPEN(NU)20 20
23
SLOW-SW 19 19SP-MUTE 20 20FBIN 25 25
1 SLOW-SW-IN
SP-MUTE84
INSEL-MUTE
87
RAPID-SW 18 18
RAPID-SW-IN
2083852558
INSEL-MUTE17 17P-ON-L(NU) 24 24RGB-CONTROL(NU)26 26P-25V-ON 23 23NICAM-RESET22 22
P-ON-L(NU) RGB-CONTROL(NU)P-25V-ON
SC-VIDEO-MUTE
NICAM-RESET
S/C-JACK-MUTE16 16
3334EEP-SCL
EEP-SDA
S/C-JACK-MUTE
PROTECT-3P-ON-H2SP-MUTEINSEL-MUTENICAM-RESET
FBIN
RAPID-SWSLOW-SW
S/C-JACK-MUTE
TO IF/VIDEO
BLOCK DIAGRAM AFT-IN
BUSY-FLASH
SCLK-FLASH
RXD-FLASH
CE-FLASH(NU)
EPM-FLASH(NU)
CNVSS
TXD-FLASH
IC301
(LCD DRIVE / 
 SIGNAL PROCESS)
585060575983897
RCV-IN 77
KEY SWITCHKEY SWITCHKEY SWITCHKEY SWITCHP-25V-ON
5
AL+5V
INVERTER CBA
CN1401
BACKLIGHT-SW10 10BACKLIGHT-ADJ11 11
CN405
PROTECT-1 12 12P-ON-H 13 13
TO LCD BACKLIGHT
BLOCK DIAGRAM (B)
BA
FUNCTION CBA
BACKLIGHT-ADJBACKLIGHT-SW
PROTECT-1
TO LCD BACKLIGHT 
BLOCK DIAGRAM (A)
BACKLIGHT-SW BACKLIGHT-ADJ
PROTECT-1
P-ON-H
A
Comparison Chart of 
Models & Marks
Model
MarkLCD-A1504
LCD-A2004A
B
D30
STAND BYSTAND BY
 
						

							7-2
IF/Video Block Diagram
L4100BLIF
JK75115117
VIDEO-PbVIDEO-Y VIDEO-Pr
TO 
AUDIO
BLOCK DIAGRAM
CN103A INPUT-0(INV)
INPUT-1(INV)
TU1
SIF
SDASCL
7109SIF
MAIN CBA
VIDEO SIGNAL
AUDIO SIGNAL
TO AUDIO  BLOCK
DIAGRAM
Q734
JK722
VIDEO1
-IN
JK721
S-VIDEO
-INTO SYSTEM 
CONTROL 
BLOCK
DIAGRAM
CY
TO
LCD BLOCK 
DIAGRAM (A),(B)
CN103B
IC781
(INPUT SELECT)
Q754 Q702
Q701
SW
CONTROL
10
9
11
INPUT-0
INPUT-1
TO 
SYSTEM CONTROL
BLOCK DIAGRAM
Q872
Q871
Q753
Q752
Q751
(TUNER UNIT)
BUFFERBUFFERBUFFERBUFFERBUFFERBUFFER
WF7WF2WF3WF6WF5WF4
35
4
CVBS1 8S-VIDEO-C 5S-VIDEO-Y 6VIDEO-Pr 1VIDEO-Y 2VIDEO-Pb 3CVBS2 9
81920
VIDEO-IN VIDEO-OUTSLOW-SW
1716
16 RAPID-SWAFT VIDEO
Q781BUFFER
WF8
SDASCLS-SW
6 AUDIO
AUDIO
AFT-INS/C-JACK-MUTEFBIN
Q11
SLOW-SW
Q731
RAPID-SW
Q730
Q791
Q744
Q792AL+5V
Q743
BUFFER