Philips LC4.1HE Schematic
Colour Television Chassis
LC4.1HE
AB
Supplement to manual LC4.1E AB: 3122 785 15310
E_14520_000.eps
170904
Contents Page
1. Technical Specifications, Connections, and Chassis
Overview 2
2. Safety Instructions, Warnings, and Notes 3
3. Directions for Use 3
4. Mechanical Instructions 4
5. Service Modes, Error Codes, and Fault Finding 6
6. Block Diagrams, Test Point Overviews, and
Waveforms
Wiring Diagram 15” 7
Wiring Diagram 20” & 23” 8
Block Diagram Video 9
Block Diagram Audio & Control 10
Testpoint Overview SSB (Top Side) 11
Testpoint Overview SSB (Bottom Side) 12
I2C Overview 13
Supply Voltage Overview 14
7. Circuit Diagrams and PWB Layouts Diagram PWB
Side I/O Panel & LKB 15” (D)15 16
Side I/O & Panel & LKB 20” & 23” (D)17 18
i-Board Panel (HC)19 20
LED and IR Panel (J) 21 22
LCD Clock Panel (J)23
8. Alignments 25
9. Circuit Descriptions, Abbreviation List, and IC Data
Sheets 28
Abbreviation List 28
IC Data Sheets 28
10. Spare Parts List 29
11. Revision List 32
©
Copyright 2005 Philips Consumer Electronics B.V. Eindhoven, The Netherlands.
All rights reserved. No part of this publication may be reproduced, stored in a
retrieval system or transmitted, in any form or by any means, electronic,
mechanical, photocopying, or otherwise without the prior permission of Philips.
Published by WS 0572 Customer Service Printed in the Netherlands Subject to modification EN 3122 785 15790
EN 2 LC4.1HE AB1.
Technical Specifications, Connections, and Chassis Overview
1. Technical Specifications, Connections, and Chassis Overview
Index of this chapter:
1.1 Technical Specifications
1.2 Connection Overview
1.3 Chassis Overview
Notes:
• Only information that is related to the iTV module, is
published in this manual. For the other information, see the
relevant chassis manual (order code on front page).
• Some models in this chassis range have a different
mechanical construction. The information given here is
therefore model specific.
• Figures below can deviate slightly from the actual situation,
due to the different set executions.
• Specifications are indicative (subject to change).
1.1 Technical Specifications
1.1.1 Vision
Display type : LCD
Screen size : 15” (38 cm), 4:3
Resolution (HxV pixels) : 1024x768 (15”)
Contrast ratio : 500: 1 (15”)
Light output (cd/m
2
) : 450 (15” + 20”)
Response time (ms) : 16 (15” + 23”)
Viewing angle (HxV degrees) : 130x100 (15”)
Tuning system : PLL
TV Colour systems : PAL B/G, D/K, I
Video playback : NTSC
Supported computer formats : 640x480 (all)
Supported video formats : 640x480i-1fH (all)
Presets/channels : 125 presets
Tuner bands : VHF
: 20” (51 cm), 4:3
: 23” (58 cm), 16:9
: 640x480 (20”)
: 1366x768 (23”)
: 350 : 1 (20”)
: 450 : 1 (23”)
: 500 (23”)
: 25 (20”)
: 176x176 (20”)
: 140x125 (23”)
: SECAM B/G, D/K, L/L’
: PAL
: SECAM
: 720x400 (15”+23”)
: 640x480 (15” + 23”)
: 832x624 (15” + 23”)
: 800x600 (15” + 23”)
: 1024x768 (15” + 23”)
: 1280x768 (23”)
: 640x480p-2fH
(15”+23”)
: 720x576i-1fH (all)
: 720x576p-1fH (all)
: 1280x720p-3fH
(15”+23”)
: 1920x1080i-2fH
(15”+23”)
: UHF
: S-band
: Hyper-band
: FM-radio
1.1.2 Sound
Sound systems : FM-mono
: AM-mono
: FM-stereo B/G
: NICAM B/G, D/K, I, L
: AV Stereo
: Virtual Dolby
Surround
Maximum power (W
) : 2 x 2 (15”)
RMS
: 2 x 5 (20” + 23”)
1.1.3 Miscellaneous
Power supply:
- Mains voltage (V
) : 90 - 240 (15”+ 23”)
AC
: 100 - 250 (20”)
- Mains frequency (Hz) : 50 / 60
Ambient conditions:
- Temperature range (°C) : +5 to +40
- Maximum humidity : 90% R.H.
Power consumption (values are indicative)
- Normal operation (W) : ≈ 42/55/92
- Stand-by (W) : < 1/1.5/3
Dimensions (WxHxD cm) : 47.2x30.8x7.65 (15”)
: 58.3x38.6x8.7 (20”)
: 71.6x37.5x9.8 (23”)
Weight (kg) : 5 (15”)
: 8.5 (20”)
: 8.8 (23”)
1.2 Connection Overview
Note: The following connector colour abbreviations are used
(acc. to DIN/IEC 757): Bk= Black, Bu= Blue, Gn= Green, Gy=
Grey, Rd= Red, Wh= White, and Ye= Yellow.
1.2.1 Side Connections
F_15790_002.eps
211105
F_15790_003.eps
Figure 1-1 Side I/O: 15” (left side), 20”+23” (right side)
211105
Safety Instructions, Warnings, and Notes
EN 3LC4.1HE AB 2.
Mini Jack: Audio Head phone - Out
Bk - Head phone 32 - 600 ohm / 10 mW ot
Cinch: Video CVBS - In, Audio - In
Ye -Video CVBS 1 V
Wh - Audio L 0.5 V
Rd - Audio R 0.5 V
/ 75 ohm jq
PP
/ 10 kohm jq
RMS
/ 10 kohm jq
RMS
Mini Jack: DVI-Audio - In
1 -Ground Y Gnd H
2 -Ground C Gnd H
3 - Video Y 1 V
4 - Video C 0.3 V
/ 75 ohm j
PP
/ 75 ohm j
PP
S-Video (Hosiden): Video Y/C - In
1 - Ground Y Gnd H
2 - Ground C Gnd H
3 - Video Y 1 V
4 - Video C 0.3 V
- In (15-inch models)
12V
DC
1 - Supply +12 V
2 - Ground Gnd H
/ 75 ohm j
PP
/ 75 ohm j
PP
j
DC
3-n.c.
Mini Jack: Speaker - Out (20 + 23-inch models)
- Loudspeaker 8 ohm ok
RJ45: DATA2 (Xpress Box- In/Out)
1 - +12V +12 V / 1 W k
2 - GND Gnd H
3-H
4-V
Signal k
SYN
Signal k
SYN
5 - TXD232 Signal
6 - RXD232 Signal
7 - SDA3_IR-OUT Signal k
8 - DCM-POR Signal k
9 - CVBS-terr Signal k
10 - GNDA Gnd H
RJ12: DATA1 (HM-Link - In/Out)
1 - LED_in < 0.3 V, active low j
2 - IR_in < 0.3 V, active low j
3-MODE Vcc j
4 - TV Power Status 4.5 to 5 V - TV “On”, < 0.3V -
TV “Stdby”, High impedance -
TV “Off” k
5 - GND Gnd H
6 - IR_out Signal k
1.2.2 Rear I/O connections
Rear connections are the same as for the LC4.1E.
1.3 Chassis Overview
POWER SUPPLY
PA NE L
SMALL SIGNAL
B
BOARD
TOP CONTOL
PANEL
i-BOARD
SIDE I/O PANEL
iTV SIDE I/O
PA NE L
iTV LED & IR
PA NE L
F_15790_005.eps
E
HC
D
D
J
061205
Figure 1-2 PWB locations (depending on model)
2. Safety Instructions, Warnings, and Notes
See the relevant chassis manual (order code on front page).
3. Directions for Use
See the relevant chassis manual (order code on front page).
EN 4 LC4.1HE AB4.
Mechanical Instructions
4. Mechanical Instructions
Index of this chapter:
4.1 Service Position
4.2 Cable Dressing
4.3 Assy/Panel Removal
4.4 Set Re-assembly
Notes:
• Only information that is related to the iTV module, is
published in this manual. For the other information, see the
relevant chassis manual (order code on front page).
• Figures below can deviate slightly from the actual situation,
due to the different set executions.
• Follow the disassembling instructions in described order.
Note: To diagnose the set with ComPair it is not needed to
open the set entirely.
To access the ComPair connector, proceed with the following:
1. Manually unlock and remove the cover cap.
2. Remove the tape shielding that covers the ComPair
connector (1).
Note: Make sure that both the ComPair connector and the
UART connector are shielded off with a piece of insulating tape
after repair for ESD reasons. Place this tape over the holes in
the rear cover of the set.
4.1 Service Position
4.1.1 Foam Bars
Figure 4-2 Foam bars
The foam bars (order code 3122 785 90580) can be used for
all types and sizes of Flat TVs. By laying the plasma or LCD TV
flat on the (ESD protective) foam bars, a stable situation is
created to perform measurements and alignments. By placing
a mirror under the TV, you can easily monitor the screen.
E_06532_018.eps
170504
Figure 4-1 ComPair connector
4.2 Cable Dressing
1
E_14520_034.eps
160904
Figure 4-3 Cable dressing (15-inch model)
F_15790_004.eps
051205
Mechanical Instructions
EN 5LC4.1HE AB 4.
4.3 Assy/Panel Removal
4.3.1 Rear Cover
Warning: Disconnect the mains power cord before you remove
the rear cover.
1. Remove the screws that secure the rear cover.
2. Lift the rear cover from the cabinet cautiously. Make sure
that wires and other internal components are not damaged
during cover removal.
4.3.2 i-Board Panel
1
Figure 4-4 i-Board panel
F_15800_004.eps
201205
4.3.3 Side I/O Panel
2
1
2
1. Disconnect all cables from the panel.
2. Untwist the fixation lip [1] c.c.w. with a pair of pliers.
3. Remove the panel.
F_15800_005.eps
071205
Figure 4-5 Side I/O panel
1. Disconnect the cable [1] from the panel.
2. Release the two fixation clamps [2] and lift the panel out of
the bracket.
4.4 Set Re-assembly
To re-assemble the whole set, execute all processes in reverse
order.
Notes:
• While re-assembling, make sure that all cables are placed
and connected in their original positions. See Figure "Cable
dressing". Also make sure that the anti-static copper foils
are not damaged and that they make good electrical
contact with the metal frame. Be careful with the fragile
LVDS cable.
EN 6 LC4.1HE AB5.
Service Modes, Error Codes, and Fault Finding
5. Service Modes, Error Codes, and Fault Finding
See the relevant chassis manual (order code on front page).
Personal Notes:
E_06532_012.eps
131004
Block Diagrams, Test Point Overviews, and Waveforms
6. Block Diagrams, Test Point Overviews, and Waveforms
Wiring Diagram 15”
Wiring 15”
RIGHT
SPEAKER
TOP CONTROL
E
1684
3P
HC
8684
3P
4P
7LC4.1HE AB 6.
I BOARD
J10
J1
J2
4P
8408
LVDS CONNECTOR
TO DISPLAY
20P
J3
5P
J6
8P
24P
J4
LEFT
SPEAKER
5P
CN1
12P
1200
2P3
1360
TO DISPLAY
2P3
1362
B
8910
SSB
12P
1910
POWER
SUPPLY
8951
5P
1751
8P
1007
3P
1684
20P
1404
8404
5P
1951
8105
+
8403
1701
3P
1010
10P
1462
5P
8462
1401
4P
8401
8701
8010
8406
INVERTER
2P3
1365
TUNER
TO DISPLAY
2P3
1367
POWER IN
1001
2P
1332
4P
SIDE I/O
D
4P
1105
3P
10P
4P
8105
1110
1108
1111
ITV SIDE
i2
IO FOR C2
24P
1001
1540
5P
8870
ITV IR
J
MODULE
1540
5P
F_15790_006.eps
061205
Block Diagrams, Test Point Overviews, and Waveforms
Wiring Diagram 20” & 23”
WIRING 20” AND 23”
8LC4.1HE AB 6.
HC
I BOARD
RIGHT
SPEAKER
3P
1260
POWER
SUPPLY
+
INVERTER
1200
8405
12P
B
8400
8910
SSB
12P
1910
5P
1751
8403
3P
4P
1007
J10
J1
8P
1701
3P
J2
4P
1684
3P
J3
5P
8408
8404
20P(40P)
1404(1402)
LVDS CONNECTOR
TO DISPLAY
20P(40P)
(8402)
1401
8910
4P
J8
6P
J4
24P
THE NUMBERS BETWEEN ( )
ARE FOR THE 20” DISPLAYS
AUDIO
I
AMPLIFIER
8751
8401
5P
1704
1706
5P
2P
1703
8107
SIDE I/O
D
4P
1105
8105
8105
LEFT
SPEAKER
8684
3P
1684
CLOCK
O
MODULE
4P
J1
1001
POWER IN
2P
TUNER
1332
4P
1010
10P
1462
5P
8409
8462
8406
8010
10P
4P
ITV SIDE
i2
IO FOR C2
5P
1540
24P
1001
1108
1111
3P
5P
1701
1107
8870
ITV IR
J
MODULE
F_15790_007.eps
TOP CONTROL
E
1540
5P
061205
Block Diagrams, Test Point Overviews, and Waveforms
Block Diagram Video
VIDEO
TUNER + VIF
B1
TV IN
FM IN
B2
B2
REAR IO SCART
B10
SCART 1
1
21
EXT 1
SIDE AV
D
VIDEO
IN
5
S-VHS
1302
UR1316S
1101
19
20
16
15
11
1102
1101
1
2
SVHS
SSIF
SEL_IF
7
8
3
4
+VTUN
+5SW_a
67
TUNER
4
5
1
SCL
SDA
7316
CVBS_SC1_AV1_IN
SC1_FBL_IN
SC1_R_V_IN
SC1_G_Y_IN
SC1_B_U_IN
STATUS_1
AV3_CVBS_Y_IN
AV3_C_IN
9LC4.1HE AB 6.
HERCULES
B2
7011
F312
1328
7
2321
IF-TER
11
F306
7320
7101
EF
B2
1108
2
4
3311
6323
1010
2
4
2
1330
2
3
AV3_CVBS_Y_IN
VIF2
8
VIF1
F313
RF_AGC
F314
SIF2
7
SIF1
8
F315
SC1_CVBS_RF_OUT
AV3_C_IN
TDA15021H1
104
105
95
99
100
B8
B2
AC
DC
AV3_CVBS_Y_IN
ONLY FOR ITV SETS
B8
B2
B2
Sound
Traps
AGC
Detect
QSS Mixer
AM Demod.
AV3_C_IN
SYNC INTERFACE
SC1_CVBS_RF_OUT
H_CS_SDTV
CVBS1
QSS/FM
AM
V_SDTV
RGB Matrix
Blue & Black
Strech
Gamma Corr.
HC
J3
1
2
3
4
HERCULES
Dig. 2H/4H
Combfilter
Y Delay Adj.
Chroma
SECAM
Decoder &
Baseband
Delay
R/Pr-3
G/Y3
52 51 50 49
+5VA
Q2
+5VA
Q10
Q11
Uint
PAL/NTSC/
INSSW3
I-BOARD
SAT
SCAVEM
on text
Yint
Vint
RGB/Pr Pb Insert
YUV Interface
B/Pb-3
YOU T
UOUT
55 54 53 59 58 56
CVBSTERR
+5VA
Q8
Q9
Skin Tone
U/V Tint
Saturation
Peaking
SCAVEM
U/V Delay
VOUT
2057
2056
2027
HSYNC
VSYNC
YUV
YUV in/out
H/V
VIN
UIN
R_OSD
Vertical &
East-West
Geometry
Sync Sep
YSYNC
J4
13
8
9
G_OSD
H-OSC
H-Shift
H-Drive
Video
Switch
+
Control
c
cvbs/y
71
70
86
74
1462
1
2
3
4
RO
GO
BO
B_OSD
Fast Blanking
VDRB
HOUT
CVBS/Y
MODULE SIDE I/O
I2
1001
13
CVBSterr
8
HSYN
9
VSYN
44
43
42
107
62
7014
EF
7012
EF
V_SDTV
H_CS_SDTV
1003
9
3
TO SMART CARD
EXPRESS BOX
4
7013
For ITV
EF
only
B8
B8
SCALER I/O
B8
I044
R_SDTV
I041
G_SDTV
I039
B_SDTV
R_Pr_PC
G_Y_PC
B_Pb_PC
V_SDTV
H_CS_SDTV
HS_PC
VS_PC
C5
C1 C2
18
916
DVI-I
CONNECTOR
7461
27
3
7
25
1
5
21
22
7463
1
13
12
2
10,11
1485
27
26
25
28
8
C3 C4
1
24
2
9
10
11
14
+5VSWI
15
17
17
18
23
24
17
R_MUX
R_MUX
14
R_MUX
11
23
PC_HD_SEL
SD_PCHD_SEL
HD_FILTER
7510
14
1
15
5
SD_PCHD_SEL
7403
MX29LV040QC
SDRAM
1Mx32x4
B_Pb_PC
G_Y_PC
R_Pr_PC
HS_PC
VS_PC
RX2n
RX2p
RX1n
RX1p
RX0n
RX0p
RXCp
RXCn
4
CS_HSYNC
VSYNC
8
B7
F503
B7
RMDATA
RMADDR
B6
F499
SCALER
7401
GM5221H
151
147
142
181
182
INTERFACE
119
DVI/HDMI
118
124
123
129
128
132
133
ANALOG
INPUT
PORT
ROM
INPUT
PORT
SCALER
GRAPHIC
ZOOM
OUT BLENDER
OSD CONTROLLER
VIDEO
ZOOM
SCALER
B7
PAN_VCC
22
LV_E0_TX0-
21
LV_E1_TX0+
20
LV_E2_TX1-
LV_E3_TX1+
19
18
LV_E4_TX2-
17
LV_E5_TX2+
14
LV_E8_TX3-
LV_E9_TX3+
13
DISPLAY
16
15
38
37
36
35
34
33
32
31
30
29
43
44
45
46
47
48
49
55
93
92
84
LV_E6_TXC-
LV_E7_TXC+
LV_ O 0
LV_ O 1
LV_ O 2
LV_ O 3
LV_ O 4
LV_ O 5
LV_ O 6
LV_ O 7
LV_ O 8
LV_ O 9
PD20
PD21
PD22
PD23
FED
FHSYNC
FVSYNC
HSHCLK
SDA_IO
SCL_IO
WC
7
6
5
7402
M24C32
TIMING
GEN.
BRIGHTNESS/CONTRAST/HUE/SAT
SYSTEM
LV_E0_TX0-
EG1
LV_E1_TX0+
EG0
LV_E2_TX1-
ER7
LV_E3_TX1+
ER6
LV_E4_TX2-
ER5
LV_E5_TX2+
ER4
LV_E8_TX3-
ER1
LV_E9_TX3+
ER0
LV_E6_TXC-
ER3
LV_E7_TXC+
ER2
EB3
EB2
EB1
EB0
EG7
EG6
EG5
EG4
EG3
EG2
EB4
EB5
EB6
EB7
PAN _ V CC
EEPROM
(NVM)
4Kx8
F_15790_008.eps
F534
ER(0-8)
EG(0-8)
EB(0-8)
1404
1402
061205
1
2
5
3
4
7
6
8
9
10
12
15
18
TO DISPLAY (15” , 23”)
20
19
14
16
1
31
TO DISPLAY (20”)
33
35
37
39
42
Block Diagrams, Test Point Overviews, and Waveforms
Block Diagram Audio & Control
AUDIO
TUNER + IF
B1
1302
TV IN
FM IN
REAR IO SCART
B10
1
21
EXT 1
SCART 1
SIDE AV
D
AUDI O
L/R IN
PC
AUDI O
IN
1104
UR1316S
1101
6
2
1102
TUNER
4
5
SCL
SDA
L_SC1_AV1_IN
R_SC1_AV1_IN
4
3
IFOUT
PC_AUDIO_L
PC_AUDIO_R
11
10
SEL_IF_SDM
B2
AV3_L_IN
AV3_R_IN
F306
IF-TER
7320
2321
6323
1108
10 10
1330
2
3
1010
66
77
99
7316
7
8
L_SC1_AV1_IN
R_SC1_AV1_IN
SIF2
SIF1
SIFF
AV3_L_IN
AV3_R_IN
PC_AUDIO_L
PC_AUDIO_R
HERCULES
B2
7217
TDA15021H
99
100
33
34
35
56
57
49
50
53
54
AD Conv.
Std Stereo
Decoder
AUDIO
SELECT
ADC/DAC
QSS Mixer
AM Demod.
AM
QSS/FM
I2S
Processor
10LC4.1HE AB 6.
AUDI O
CONTROL
Vol/Treb/
Bass
Features
DACs
61
60
62
63
36
37
AUDOUTLSR
AUDOUTLSL
OUT_MUTE
AUDIO AMPLIFIER
B4
STANDBY
B2
7752
REAR IO SCART
B10
SC1_L_RF_OUT
SC1_R_RF_OUT
7370
MUTE
MUTE
7602
74HC08PW
3
11
SC1_L
SC1_R
&
&
7712
TDA1517ATW
18
3
7702
7703
MUTE
1
2
12
13
STANDBY
B2
MUTE
FOR 20”, 23”
12,13
8,9
11
SOUND_ENABLE
POWER_DOWN
EXT_MUTE
1101
3
1
AUDIO AMPLIFIER
I
1751
1706
44
22
11
55
DISPLAY
1701
33
11
B2
1
21
EXT 1
SCART 1
AUDOUTLSR
AUDOUTLSL
7703-1
7703-2
7712
TDA1517ATW
14
7
9
8
SIDE AV
i2
1701
3
1
FOR 20”, 23”
DISPLAY
(20”, 23”)
19
16
2
5
R+
RL+
L-
(20”, 23”)
1704
44
55
11
22
D
1107
1110
FOR 15”
DISPLAY
SIDE AV
1106
HEAD
PHONE
1005
1001
4
3
SPEAKER
2
1
SPEAKER
BATHROOM
SPEAKER
RIGHT
LEFT
CONTROL
IR LED PANEL
J
6541
GND
7542
VS
OUT
+5VA
6540B
6540A
Green
Red
7540
3544
7541
3540
PC-TV-LED
IR
+5VA
LED-SEL
i2
1540
44
55
22
33
11
MODULE SIDE I/O
1002
1
2
To Smart Card
Express Box
1540
3
4
5
6
RC_IR
+5V
RD_GR_LED
LED_CTRL
LEDIN_CLK
IRIN_DATA-IN
MODE
STATUS_DATA-OUT
GND
IR_OUT
LEDIN_CLK
IRIN_DATA-IN
MODE
STATUS_DATA-OUT
GND
IR_OUT
LED_CTRL
+5V
RD_GR_LED
RC_IR
HC
1001
11
22
33
44
55
66
17 17
20 20
21 21
22 22
23 23
I-BOARD
J4
LEDIN_CLK_TXD_SCL1
IR_IN_DA
MODE
STATUS_DATA_OUT
IR_OUT
PC_TV_LED_OUT
LED_SEL_OUT
RC_IR
U5
P89C664
MICRO
CONTR.
+5V
9
18
13
11
1
10
40
TA-IN_RXD_SDA1
CONTR.
See Blockdiagram
I²C
PC_TV_LED
+3V3STBY
LED-SEL
IR_IN_TV
LIGHT-SENSOR
15
4
4
U4
HEF4053BT
MULTI
PLEX
U3
HEF4053BT
MULTI
PLEX
B3
1007
J6
66
55
44
33
22
71
E
Channel+
ChannelVol um e+
Vol um e-
HERCULES
+3V3STBY
+3V3STBY
+5VSW
PC-TV-LED
LED-SEL
3063
6060
KEYBOARD CONTROL
1309
KB
1310
1311
1312
Powe r
Menu
1313
1314
7060
1684
22
LIGHT-SENSOR
1684
KEYBOARD
HERCULES
B2
7011
TDA15021H1
SEL_IF
114
4015
107
HERCULES
IR
97
115
126
120
128
10
11
98
116
102
111
122
99
SERVICE
SOUND-ENABLE
6073
POWER_DOWN
6076
SDM
TV_IRQ
STATUS_1
EXT_MUTE
STANDBY
TV_SC_COM
1001
B1
B5
B3
B3
B3
B3
B4
B5
B4 B5
B3
F_15790_009.eps
061205
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