Sanyo LCD-42XF8T User manual

Model No. LCD-42XF8T
Service Ref.No. LCD-42XF8T-00
SERVICE MANUAL LCD Television
Product Code: 1-130-257-17
Original Version
Chassis Series: UE8-L
Z5LW
Contents
FILE NO.
Give complete "SERVICE REF. NO." for
parts order or servicing.It is shown on the
rating lable 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 specications. Refer
to the specication table.
REFERENCE NO.
Safety Notice...............................................2
Specications..............................................3
Chassis Block Diagrams..........................4-5
IC Block Diagrams ................................... 6-8
On-screen Service Menu System .......... 9-10
Service Adjustments ............................ 11-13
Mechanical Disassembly ..................... 14-17
Cabinet Parts List..... ................................ 18
Chassis Electrical Parts List.................19-35
Printed Wiring Board............................36-42
Schematic Diagram..............................43-48
Nota:
Este manual de service también puede ser utilizado con
las siguientes marcas y modelos , salvando la cosmética :
Noblex 42LC830FT
Philco PLF4211T
JVC LT 42DR51

-2-
Safety Notice
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 televison 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 signicance.
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 .

-3-
Specications
Model LCD-42XF8T
Maximum Visible Range 107cm (Screen Diagonal Size)
Picture Resolution 1920(H) x 1080(V)
Viewable Angle (L°/3) L/R: +/-89D, U/D: +/-89D H
Brightness 450 cd/m²
Degree of Colour Coverage ≥30%
Mobile Trailer Time 6.5 ms
Voltage AC100-240 V, 50/60Hz
Power Consumption 195W
Digital TV System SBTVD
Video decoder: Up to H.264
Audio decoder: MPEG4, Dolby Pulse, Dolby Digital, Dolby Digital Plus
Analogue TV System PAL-N, PAL-M, NTSC M
Aerial input impedance 75Ω
Speaker Size Mains: 6cm x 12cm x 2pcs
Sound speciality Maximum Output Power is 10W+10W
Total Harmonic Distortion(THD)≤10%
Input terminals PC input terminal : RGB X 1
HDMI terminal: x 3
Audio: Mini stereo jack x 1 (Audio input of PC)
Video: Composite video terminals x 2 (1Vp-p, 75Ω)
S-VIDEO input: x 1 (DIN 4-pin, Y/C separate signal input)
DVD input: Component video input Y, CB/PB, CR/PR input x 1
Audio input: (R/L) x 6 (400mVrms)
USB terminal: X 1
Output terminals Audio Monitor Output: R/L x 2 (400mVrms, ≤1KΩ)
S/P DIF (Coaxial) Output x 1
Headphone Jack : Mini stereo jack x1
Dimensions
(Width x Height x Depth) 1018mm X 678mm X 236mm (Including Stand)
Net Weight
(Including Stand ) 17.5 KG
Operating Environment
Operating Temperature 0ºC~40ºC (32ºF~104ºF)
Operating Humidity 20~80%
Storage Temperature -10ºC~50ºC (14ºF~122ºF)
Storage Humidity 20~80%

-4-
Chassis Block Diagrams
MAIN SIGNAL PROCESSING CIRCUIT
9781(5 99$ 967%

5*%,1 &9%6,1 <3E3U,1 <&,1 5/,1
/5
&9%6RU<3E3U
781(5
$9)%$=
,6'%7 '(02'8/$725
7&)*
6$:)LOWHU ')')
+'0,B
9,) 6,)
76 ''5
8$57
''56'5$0 0E[
63,
'8$/ /9'6
$823$1(/ ąRUą
23$03
5
.(<%2$5'
,5
86%
+($'(5
''&5
$XGLR287
+3+21(
((3520 &
2SWLFDO &R[LDO
63',)
RXW
:
:
,&+'3
06'3; ELW5,6&&38 03(*'(& +'(& +DUGZDUH-3(* 0XOWLVWDQGDUG79 6RXQGSURFHVVRU 6&$/(5 +'0, /9'6 ,6'%7
41-003
63,)/$6+
0E
76
,)
,)
,,&
,)B$*&
,)B79
9,)30
6,)30
,&
5)$*&
567
0
0+]
,&
)2562)7'(%8*
5(6(7
86%
''&'$
.(<
63',)
IRUH[WHUQDOXSGDWH
+'0,B
$XGLR
'$& RXW
+'0,
32576
08; /,1( $8',2
287
32:(5 $03/,),(5 5$)3
/ 5
+'0,B
,&+'3
,&+'3
'$&5/
'$&5/ 23$03
23$03
5&/('
+'&3.(<
(3520& +'&3.(<
$9<&3E3U
/5
$9
/5
/5
&9%6RU<&
$96

9LGHR
/5
/5
&9%6
/5
5*%
3& 5*%
/5
3& ,&
,&'(%8*

-5-
POWER SUPPLY IC
12VA 200mA 5V_B1
Tuner
IF AMP
Pre audio AMP
12VP 0.4A
VCC PANEL
ON_PANEL
5VSTB 2A
5VD 3.3VA(3.312V,639mA)
EEPROM
MSD309
PWR ON/OFF 3.3VD(3.31V,77mA) 1.8VA(1.786V,611mA)
PS331 DDR
1.2V(1.195V,70.30mA) MSD309
Demod
Demod
1.32V(1.314V,762.5mA)
MSD309
2.5VDemod(2.505V,28.1mA)
Demod
2.5VA(2.5V,111.5mA)
(5.014V,500mA) MSD309
USB
13V 1.8A
AMP
5VSTB 100mA 3.3VSTB(3.318V,58.35mA)
FLASH
MSD309
IR RESET CIRCUIT
KEY
24V/3.41A(MAX)
Backlight
LDO
LDO
LDO
POWERBOARD
DC-DC
LDO
FET-SW
FET-SW
LDO
LDO
Chassis Block Diagrams

-6-
IC Block Diagrams
I2S_OUT_BCK
ON_PANEL
MIUB_ODT
HOTPLUGA
C
ISP_TXD
AUOUTR0 AUOUTL0
FLASH_WP
RXB0N
EARPHONE_ROUT
RXO1+
RXE4-
RXE1-
MIUB_DQS1B
RF_AGC
VCC1.32V
X
L5508
1234
5 6 7 8
RXE3-
AV3_RIN
RXC1P
5VD
RXC1N
KEY1
MIUA_DQS0B
MIUA_MCLK
RXE4+
RXACLKP
IR_SYNC
AV1_LIN COMP_R+
I2S_OUT_SD
RGB0_SOG
MIUB_BA2
VGA_HSYNC
LEDG
TS_D1
RXC2N
MIUB_MCKE
AUOUTR1
VGA_RIN
COMP_Y+
DEMOD_RST
X
L5503
1234
5 6 7 8
TS_D0
MIUA_DQ[0-15]
RXE2-
PWM0
UART1_TX
X
L5504
1234
5 6 7 8
RXEC+
MIUA_MCKE
MIUA_RASZ
RXA2P
DDCCSCL
RXOC-
MVERF
CVBS_OUT
VIFP
BACKLIGHT
I2S_OUT_MCK
MIUA_BA1
MIUA_DQM0
RXC0N
MIUB_DQM1
RXB2N
MIUA_WEZ
TS_D2
X
L5507
1234
5 6 7 8
MIUA_MCLKZ
RF_AGC_SEL
MIUA_DQS1
DDCCSDA
AV1_VIN+
AV2_VIN+
RXA1N
SCL
MIUA_CASZ
RXE3+
ON_PBACK
RXO2-
PWR_ON/OFF
MIUB_DQS0
ADJ_PWM
VGA_VSYNC
TV_SIFM
RXA1P
MIUA_BA0
HDMI_CEC
ISP_RXD
HD1_RIN
MIUB_MCLKZ
KEY0
RXBCLKP
VIFM
RXC2P
RXA2N
TS_D6
HD1_LIN
2.5VA
RXO4-
RXE0+
TS_CLK
RXO0-
RGB0_BIN+
RXB0P
TS_D3
TSVAL0
AUOUTL1
UART1_RX
MIUB_BA0
VGA_LIN
MIUB_DQ[0-15]
MIUB_RASZ
X
L5506
1234
5 6 7 8
PWM1
MIUB_DQS0B
RXCCLKN
3.3VA
RXC0P
HOTPLUGB
DDCBSCL
RXE1+
COMP_SOG+
AV3_LIN
RXACLKN
HOTPLUGC
MIUB_WEZ
AV1_RIN
AV3_VIN
RGB0_RIN+
RXB1N RXB1P
MIUB_MCLK
#IF-OUT
RXA0P
MIUA_BA2
EARPHONE_LOUT
TS_D5
MIUA_A[0-13]
RXO3-
X
L5505
1234
5 6 7 8
TS_D7
TS_D4
MIUB_DQS1
Y
LEDR
IF-OUT
RXO3+
MIUB_BA1
RXO2+
RXB2P
DDCASCL
1.8VA
3.3VSTB
COMP_B+
MIUA_DQS1B
MIUB_DQM0
SDA
MIUA_DQM1
RXE0-
MIUB_A[0-13]
RXEC-
P_FAIL1
RXOC+
TSSTART
SYSTEM_RST
RXO0+
MIUA_DQS0
RXCCLKP
MIUB_CASZ
RXA0N
RXO1-
EPM_WP
SPDIFO
DDCASDA DDCBSDA
RXO4+
RGB0_GIN+
S_DET
TV_SIFP
RXE2+
MVERF
RXBCLKN
COMP_DET
MUTE_AMP
MIUA_ODT
USB_DM
USB_DP
X
K5001
1
4
B4L26B0700G
L5501
B4L26B0700G
L5502
KK0.1GQ
C5509
KK0.1GQ
C5506
KK0.1GQ
C5510
KK0.1GQ
C5507
KK2.2LBYAG
C5511
KK0.047LBYAG
C5503
KK0.047LBYAG
C5521
KK0.047LBYAG
C5514
KK0.047LBYAG
C5520
KK0.047LBYAG
C5519
KK0.047LBYAG
C5508
KK0.047LBYAG
C5515
KK0.047LBYAG
C5513
CJ18CGQ
C5504
CJ18CGQ
C5505
1/10GJ10KC
R5511
1/10GJ10KC
R5510
1/10GJ2.2KC
R5509
1/10GJ2.2KC
R5508
1/10GJ22C
R5529
1/10GJ22C
R5528
1/10GJ68C
R5532
1/10GJ68C
R5535
1/10GJ68C
R5533
1/10GJ68C
R5530
1/10GJ68C
R5534
1/10GJ68C
R5501
1/10GJ68C
R5531
1/10GF1KC
R5512
1/10GF1KC
R5513
X
R5506
CJ39CGQ
C5512
L3DE220PG
L5509
SPI_SDI
SPI_SDO
R1JA2204G
RB5501
SPI_SCK
SPI_CSN
RESET_B
GPIO2_B
GPIO1_B
MUTE_HP
USB_OC_DET
ON_USB
PANEL_CH
GPIO1
GPIO2
MSD309PX-LFM
IC5501
A2
A3
A4
A6
A7
A9
A10
A12
A13
A15
A16
A18
A19
A21
A22
A23
A24
B25 C25 D25 F25 G25 J25 K25 M25 N25 R25 T25 V25 W25 Y25
AB25 AC25 AD25
AE24
AE23
AE22
AE20
AE19
AE17
AE16
AE14
AE13
AE11
AE10
AE8
AE7
AE5
AE4
AE3
AE2
AE1AD1AB1AA1
W1V1T1R1N1M1K1J1G1F1D1C1B1
B2
B3
B4
B5
B6
B7
B8
B9
B10
B11
B12
B13
B14
B15
B16
B17
B18
B19
B20
B21
B22
B23
B24 C24 D24 E24 F24 G24 H24 J24 K24 L24 M24 N24 P24 R24 T24 U24 V24 W24 Y24
AA24 AB24 AC24 AD24
AD23
AD22
AD21
AD20
AD19
AD18
AD17
AD16
AD15
AD14
AD13
AD12
AD11
AD10
AD9
AD8
AD7
AD6
AD5
AD4
AD3
AD2AC2AB2AA2
Y2W2V2U2T2R2P2N2M2L2K2J2H2G2F2E2D2C2
C3
C4
C5
C6
C7
C8
C9
C10
C11
C12
C13
C14
C15
C16
C17
C18
C19
C20
C21
C22
C23 D23 E23 F23 G23 H23 J23 K23 L23 M23 N23 P23 R23 T23 U23 V23 W23 Y23
AA23 AB23 AC23
AC22
AC21
AC20
AC19
AC18
AC17
AC16
AC15
AC14
AC13
AC12
AC11
AC10
AC9
AC8
AC7
AC6
AC5
AC4
AC3AB3AA3
Y3W3V3U3R3P3N3M3L3K3J3H3G3F3E3D3
D4
D6
D11
D12
D13
D14
D15
D16
D22
T3
E22 F22 G22 H22 J22 K22 L22 M22 N22 Y22 AA22 AB22
AB20
AB19
AB17
AB16
AB14
AB13
AB11
AB10
AB8
AB7
AB5
AB4AA4
W4V4T4R4N4M4K4J4G4F4E4
E5
E6
E9
E10
E11
E12
E13
E14
E15
E16
E17
E18
E19
E20
E21 F21 G21 H21 J21 K21 L21 M21 N21 P21 T21 U21 W21 Y21
AA21
AA20
AA19
AA18
AA17
AA16
AA15
AA14
AA13
AA12
AA11
AA10
AA9
AA8
AA7
AA6
AA5
Y5W5V5U5T5R5P5N5M5L5K5J5H5G5F5
F6
F9
F10
F11
F12
F13
F14
F15
F16
F17
F18
F19
F20 G20 H20 J20 K20 L20 M20 N20 P20 R20 T20 U20 V20 W20 Y20
Y19
Y18
Y17
Y16
Y15
Y14
Y13
Y12
Y11
Y10
Y9
Y8
Y6W6V6U6T6R6P6N6M6L6K6J6H6G6
G9
G10
G11
G12
G14
G15
G16
G17
G18
K19 L19 M19 N19 P19 R19 T19 U19
W12
W11
W10
W9
W8
W7V7
H9
H10
H11
H12
H13
H14
H15
H16
H17
K18 L18 M18 N18 P18 R18 T18 U18
V12
V11
V10
V9
V8U8T8P8N8M8
J9
J10
J11
J12
J13
J14
J15
J16
J17 K17 L17 M17 N17 P17 R17 T17 U17
U16
U15
U14
U13
U12
U11
U10
R9P9N9M9K9
K10
K11
K12
K13
K14
K15
K16 L16 M16 N16 P16 R16 T16
T15
T14
T13
T12
T11
T10R10P10N10M10L10
L11
L12
L13
L14
L15 M15 N15 P15 R15
R14
R13
R12
R11P11N11M11
M12
M13
M14 N14 P14
P13
P12N12
N13
B4V10B0670G
X5501
KK0.1GQ
C5534
KK0.1GQ
C5535
6.3KK10BA C5502
6.3KK10BA
C5501
MIUA_A[10]
MIUA_A[5]
MIUA_DQ[9]
MIUA_DQ[6]
MIUA_A[7]
MIUA_DQ[1]
MIUA_A[0]
MIUA_DQ[8]
MIUA_DQ[13]
MIUB_DQ[15]
MIUA_A[11]
MIUA_A[9]
MIUA_DQ[11]
MIUB_A[12]
MIUB_A[3]
MIUB_DQ[5]
MIUA_DQ[15]
MIUB_A[0]
MIUA_A[1]
MIUA_DQ[10]
MIUA_DQ[2]
MIUB_DQ[1]
MIUB_DQ[11]
MIUB_A[7] MIUB_A[6]
MIUA_A[2]
MIUA_A[3]
MIUA_A[8]
MIUA_DQ[12]
MIUB_DQ[8] MIUB_DQ[6]
MIUA_A[4]
MIUB_A[9]
MIUA_DQ[3]
MIUB_A[4]
MIUB_DQ[4]
MIUA_DQ[0]
MIUA_DQ[5]
MIUB_DQ[12]
MIUB_DQ[3]
MIUB_A[2] MIUB_A[8]
MIUB_A[11]
MIUA_A[12]
MIUB_DQ[0]
MIUA_DQ[4]
MIUA_A[13]
MIUB_DQ[2]
MIUB_A[1]
MIUA_DQ[7]
MIUB_DQ[10]
MIUA_A[6]
MIUB_DQ[7]
MIUB_A[13]
MIUA_DQ[14]
MIUB_DQ[14]
MIUB_A[5]
MIUB_A[10]
MIUB_DQ[13]
MIUB_DQ[9]
MUTE_HP
IC5501 MSD309PX-LFM

-7-
Address
Generator
Memory Array
Page Buffer
Y-Decoder
X-Decoder
Data
Register
SRAM
Buffer
SI/SIO0
SCLK Clock Generator
State
Machine
Mode
Logic
Sense
Amplifier
HV
Generator
Output
Buffer
SO/SIO1
CS#,
WP#/ACC,
HOLD#
IC5700 MX25L3206EM2I
IC Block Diagrams

-8-
IC Block Diagrams
PWM
Gen.
PWM
Gen.
Control
logic
OSC
Over current
protection
Under
Voltage
protection
PWM
Gen.
PWM
Gen.
39
41
40
42
44
45
43
46
3 75 64 98 101 2 11 12
20
18
19
17
15
14
16
13
24
22
23
21
34 3032 3133 2829 2736 35 26 25
47
48
38
37
VDB1
OUTA1
HBA1
HBB1
OUTB1
VDA1
OUTB1
OUTA1
VDB1
VDA1
VSA1
INB1
INB2
AVCC
GND
MUTEL
STBYL
PROT
VSA2
VREF
OUTB2
VDB2
OUTA2
HBA2
VDA2
HBB2
OUTB2
NC
NC
VDA2
OUTA2
VDB2
RREF
DVDD RLMT
CLK
GAIN1 GAIN2
ROSC
VSB1 TEST1 TEST2 VSB2
INA1
INA2
NC
NC
VD
Gain
Gain
5V Reg.
AVCC/2 Over
temperature
protection
10V Reg.
IC001 R2A15120FAP
TC90517FG Toshiba products specification [Tentative]
10/111 rev. 111
CONFIDENTIAL
2. Configuration
All functions required for ISDB-T demodulation and error correction are built into the TC90517.
The input signals to be supported are a low IF (intermediate frequency) signal and direct IF signal.
Baseband IQ signals can also be input.
The output signal is an MPEG-2 transport stream (TS) in serial format. Note that a TS in parallel format
can be output by setting registers.
Fig. 2.1 TC90517FG Block Diagram
Synchroni-
zation flag
TS output
Crystal
(reference clock
)
㩷
Tuner
AGC
control
I
2
C
control
Filter
AGC
ISIC(unguarded
preecho/postecho
suppression) FFT
Control
Adaptive
interpolation
filter
Equalization
CSI
(reliability
detection)
CVI
(CW interference
detection)
AGC control output
Tuner I
2
C
Clock PLL㩷Viterbi
decoding
Memory㩷
Frequency
deinterleaving
RS
decoding
Error
detection
Output
control
Layer
isolation
TMCC
demodulation
Interpolation
phase
correction
Synchroni
zation
Demapping
CSI
processing
Bit deinterleaving
B
y
te deinterleavin
g
㩷
TS multiplex㩷
FFT window
control
AGC distortion signal
ADC
ADC
IF input
or IQ input 㩷
SW
External AGC input
Host I
2
C
Energy
despreading
Energy
despreading
Energy
despreading
Demapping
CSI
processing
Demapping
CSI
processing
Modulation division㩷
Quadrature
detection
AFC
Frequency
CPE㩷
Pilot
extraction㩷
Time
deinterleaving
IC5801 TC90517FGP

-9-
On-screen Service Menu System
General
This set has an On-screen Menu system included in the CPU that allows remote operation for most of the
service adjustments.
rHow to select the service item and adjust data:
On-screen Service Menu System
Quick operation is needed to enter Service Mode.
rHow to enter the Service Menu
1. Press the INPUT button on Side Controls or on
the remote control.
2. Press the numeric buttons "2", "5", "8", "0"
orderly on the remote control, and the Service
Mode will be displayed.
With the menu, press ▲, ▼, ◄ or ►button to
navigate through the options or adjust an option.
Press ENTER button to confirm a selection or enter
a sub-menu.
Press BACK button to return to previous layer
menu.
rTo exit service mode
Press MENU button to exit service mode.
Open the Input Source Menu.
INPUT button
Remote Control
[ Service Mode Menu ]
BACK button:
Return to previous
layer menu
◄► button:
Adjust the data
▲▼ button:
Select Item
MENU button:
Exit Service Mode
Side Controls
ADC ADJUST
Service Mode
PICTURE MODE
W/B ADJUST
SPECIAL SET
QMAP ADJUST
SW INFORMATION
Backlight Adjust
Over Scan
Software Upgrade
BMTEST
Audio Preset Setting
W/B DATA
ET2 VER 1.83 SANYO_42FHD 2011/3/7

-10-
■ Service Adjustment Data Table
On-screen Service Menu System
ADC ADJUST MODE RGB
R-GAIN 4096
G-GAIN 4096
B-GAIN 4096
RED OFFSET 0
GREEN OFFSET 0
BLUE OFFSET 0
AUTO ADC <FAIL/SUCCESS>
MODE YPbPr(SD)
R-GAIN 4626
G-GAIN 4522
B-GAIN 4626
RED OFFSET 2048
GREEN OFFSET 256
BLUE OFFSET 2048
AUTO ADC <FAIL/SUCCESS>
MODE YPbPr(HD)
R-GAIN 4626
G-GAIN 4522
B-GAIN 4626
RED OFFSET 2048
GREEN OFFSET 256
BLUE OFFSET 2048
AUTO ADC <FAIL/SUCCESS>
W/B ADJUST RED 78
GREEN 78
BLUE 78