JVC LT-52GZ79, LT-52GZ79/S, LT-52GZ79/BA, LT-52GZ79/E Service Manual
SERVICE MANUAL
YA665<Rev.001>200812SERVICE MANUAL
LT-52GZ79, LT-52GZ79/BA,
WIDE LCD PANEL TELEVISION
LT-52GZ79
COPYRIGHT © 2008 Victor Company of Japan, Limited
/E, LT-52GZ79/S
BASIC CHASSIS
FL5
1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15
5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-20
COPYRIGHT © 2008 Victor Company of Japan, Limited
TABLE OF CONTENTS
No.YA665<Rev.001>
2008/12
SPECIFICATION
Items Contents
Dimensions ( W × H × D ) 121.74 cm
121.74 cm
Mass 40.0 kg [With stand]
34.0 kg [Without stand]
Power Input AC110V - AC240 V, 50 Hz / 60 Hz
Power Consumption 277 W (Standby:0.5 W)
TV RF System B, G, I, D, K, K1, M
Colour System PAL / SECAM / NTSC 3.58 / NTSC 4.43
Stereo System A2 (B/G, D/K), NICAM (B/G, I, D/K)
Teletext System FLOF (Fastext), WST (World Standard System)
Receiving
Frequency
Intermediate Frequency VIF
Colour Sub
Carrier
LCD panel 52 V-inch wide aspect (16 : 9)
Screen Size Diagonal: 132.1 cm (H: 93.1 cm
Display Pixels Horizontal: 1920 dots × Vertical: 1080 dots
Audio Power Output 10 W + 10 W
Speaker 4.5 cm × 16.0 cm, Twin Oblique cone × 2
Aerial terminal (VHF/UHF) 75 Ω unbalanced, coaxial
Video / Audio
Input-1/2/3
Video / Audio Output S-Video Mini-DIN 4 pin connector × 1
HDMI Input Video HDMI connector × 3
PC (RGB) Input D-sub 15 pin × 1
Headphone 3.5 mm stereo mini jack × 1
Remote Control Unit RM-C1856 (AAA/R03 dry cell battery × 2)
Design & specifications are subject to change without notice.
Component Video
625p / 525p / 625i / 525i
VHF Low
VHF High
SECAM
[Input-1/3]
750p / 1125i
S-Video
[Input-1/2]
46.25MHz - 140.25MHz
147.25MHz - 423.25MHz
UHF
431.25MHz - 863.25MHz
CATV
Mid (X - Z+2, S1 - S10) / Super (S11 - S20) / Hyper (S21 - S41) bands
38.0MHz (B, G, I, D, K, L)
SIF
32.26MHz (5.74MHz: B), 32.15MHz (5.85MHz: G), 31.45MHz (6.55MHz: I)
31.75MHz (6.25MHz: D), 32.15MHz (5.85MHz: K)
PAL
4.43MHz
4.40625MHz / 4.25MHz
NTSC
3.58MHz / 4.43MHz
RCA pin jack × 6 (Input-3)
Y: 1V (p-p) (Sync signal: ±0.35V(p-p), 3-value sync.), 75 Ω / Pb/Pr: ±0.35V(p-p),
75 Ω
Y: 1V (p-p), Positive (Negative sync provided), 75 Ω / Pb/Pr: 0.7V(p-p), 75 Ω
Mini-DIN 4 pin connector × 2
Y: 1 V (p-p), Positive (Negative sync provided), 75 Ω
C: 0.286 V (p-p) (Burst signal), 75 Ω
Video 1 V (p-p), Positive (Negative sync provided), 75 Ω, RCA pin jack × 3
Audio 500 mV (rms), High impedance, RCA pin jack × 6
Y: 1 V (p-p), Positive (Negative sync provided), 75 Ω
C: 0.286 V (p-p) (Burst signal), 75 Ω
Video 1 V (p-p), Positive (Negative sync provided), 75 Ω, RCA pin jack × 1
Audio 500 mV (rms), Low impedance, RCA pin jack × 2
(Digital-input terminal is not compatible with picture signals of computer signal)
Audio Analog: 500mV(rms) (-4dBs), high impedance, RCA pin jack × 2
R/G/B: 0.7 V (p-p), 75Ω
HD / VD: 1 V (p-p) to 5 V (p-p), high impedance
< Available signal >
VGA: 640 pixels × 480 pixels (Horizontal: 31.5 kHz / Vertical: 60 Hz)
XGA: 1024 pixels × 768 pixels (Horizontal: 48.4 kHz / Vertical: 60 Hz)
×
82.55 cm × 34.57 cm [With stand]
×
77.85 cm × 13.5 cm [Without stand]
×
V: 52.4 cm)
1-2 (No.YA665<Rev.001>)
SECTION 1
PRECAUTION
1.1 SAFETY PRECAUTIONS
(1) The design of this product contains special hardware,
many circuits and components specially for safety
purposes. For continued protection, no changes should be
made to the original design unless authorized in writing by
the manufacturer. Replacement parts must be identical to
those used in the original circuits. Service should be
performed by qualified personnel only.
(2) Alterations of the design or circuitry of the products should
not be made. Any design alterations or additions will void
the manufacturer's warranty and will further relieve the
manufacturer of responsibility for personal injury or
property damage resulting therefrom.
(3) Many electrical and mechanical parts in the products have
special safety-related characteristics. These
characteristics are often not evident from visual inspection
nor can the protection afforded by them necessarily be
obtained by using replacement components rated for
higher voltage, wattage, etc. Replacement parts which
have these special safety characteristics are identified in
the parts list of Service manual. Electrical components
having such features are identified by shading on the
schematics and by ( ) on the parts list in Service
manual. The use of a substitute replacement which does
not have the same safety characteristics as the
recommended replacement part shown in the parts list of
Service manual may cause shock, fire, or other hazards.
(4) Don't short between the LIVE side ground and
ISOLATED (NEUTRAL) side ground or EARTH side
ground when repairing.
Some model's power circuit is partly different in the GND.
The difference of the GND is shown by the LIVE : ( ) side
GND, the ISOLATED (NEUTRAL) : ( ) side GND and
EARTH : ( ) side GND.
Don't short between the LIVE side GND and ISOLATED
(NEUTRAL) side GND or EARTH side GND and never
measure the LIVE side GND and ISOLATED (NEUTRAL)
side GND or EARTH side GND at the same time with a
measuring apparatus (oscilloscope etc.). If above note will
not be kept, a fuse or any parts will be broken.
(5) When service is required, observe the original lead dress.
Extra precaution should be given to assure correct lead
dress in the high voltage circuit area. Where a short circuit
has occurred, those components that indicate evidence of
overheating should be replaced. Always use the
manufacturer's replacement components.
(6) Isolation Check (Safety for Electrical Shock Hazard)
After re-assembling the product, always perform an
isolation check on the exposed metal parts of the cabinet
(antenna terminals, video/audio input and output terminals,
Control knobs, metal cabinet, screw heads, earphone jack,
control shafts, etc.) to be sure the product is safe to operate
without danger of electrical shock.
a) Dielectric Strength Test
The isolation between the AC primary circuit and all metal
parts exposed to the user, particularly any exposed metal
part having a return path to the chassis should withstand a
voltage of 3000V AC (r.m.s.) for a period of one second. (.
. . . Withstand a voltage of 1100V AC (r.m.s.) to an
appliance rated up to 120V, and 3000V AC (r.m.s.) to an
appliance rated 200V or more, for a period of one second.)
This method of test requires a test equipment not generally
found in the service trade.
b) Leakage Current Check
Plug the AC line cord directly into the AC outlet (do not use
a line isolation transformer during this check.). Using a
"Leakage Current Tester", measure the leakage current
from each exposed metal part of the cabinet, particularly
any exposed metal part having a return path to the chassis,
to a known good earth ground (water pipe, etc.). Any
leakage current must not exceed 0.5mA AC (r.m.s.).
However, in tropical area, this must not exceed 0.2mA AC
(r.m.s.).
Alternate Check Method
Plug the AC line cord directly into the AC outlet (do not
use a line isolation transformer during this check.). Use
an AC voltmeter having 1000Ω per volt or more
sensitivity in the following manner. Connect a 1500Ω
10W resistor paralleled by a 0.15µF AC-type capacitor
between an exposed metal part and a known good earth
ground (water pipe, etc.). Measure the AC voltage
across the resistor with the AC voltmeter. Move the
resistor connection to each exposed metal part,
particularly any exposed metal part having a return path
to the chassis, and measure the AC voltage across the
resistor. Now, reverse the plug in the AC outlet and
repeat each measurement. Any voltage measured must
not exceed 0.75V AC (r.m.s.). This corresponds to
0.5mA AC (r.m.s.).
However, in tropical area, this must not exceed 0.3V AC
(r.m.s.). This corresponds to 0.2mA AC (r.m.s.).
AC VOLTMETER
(HAVING 1000 /V,
OR MORE SENSITIVITY)
0.15 F AC-TYPE
GOOD EARTH GROUND
1500 10W
PLACE THIS PROBE
ON EACH EXPOSED
ME TAL PAR T
(No.YA665<Rev.001>)1-3
1.2 INSTALLATION
1.2.1 HEAT DISSIPATION
If the heat dissipation vent behind this unit is blocked, cooling
efficiency may deteriorate and temperature inside the unit will
rise. The temperature sensor that protects the unit will be
activated when internal temperature exceeds the pre-determined
level and power will be turned off automatically.Therefore,
please make sure pay attention not to block the heat dissipation
vent as well as the ventilation outlet behind the unit and ensure
that there is room for ventilation around it.
1.2.3 INSTALLATION REQUIREMENTS
To ensure safety in an emergency such as an earthquake, and
to prevent accidents, ensure that measures are taken to prevent
the TV dropping or falling over.
It fixes in a band.
Ventilation hole
*Diagram differs from actual appearance.
1.2.2 INSTALLATION REQUIREMENTS
Ensure that the minimal distance is maintained, as specified
below, between the unit with and the surrounding walls, as well
as the floor etc.Install the unit on stable flooring or stands.Take
precautionary measures to prevent the unit from tipping in order
to protect against accidents and earthquakes.
200 mm
150 mm 50
*Diagram differs from actual appearance.
mm
150 mm 50 mm
TV STAND
*Diagram differs from actual appearance.
1.2.4 NOTES ON HANDLING
When taking the unit out of a packing case, do not grasp the
upper part of the unit. If you take the unit out while grasping the
upper part, the LCD PANEL may be damaged because of a
pressure. Instead of grasping the upper part, put your hands on
the lower backside or sides of the unit.
1.3 HANDLING LCD PANEL
1.3.1 PRECAUTIONS FOR TRANSPORTATION
When transporting the unit, pressure exerted on the internal LCD
panel due to improper handling (such as tossing and dropping)
may cause damages even when the unit is carefully packed. To
prevent accidents from occurring during transportation, pay
careful attention before delivery, such as through explaining the
handling instructions to transporters.
Ensure that the following requirements are met during
transportation, as the LCD panel of this unit is made of glass and
therefore fragile:
(1) USE A SPECIAL PACKING CASE FOR THE LCD PANEL
When transporting the LCD panel of the unit, use a special
packing case (packing materials). A special packing case
is used when a LCD panel is supplied as a service spare
part.
(2) ATTACH PROTECTION SHEET TO THE FRONT
Since the front (display part) of the panel is vulnerable,
attach the protection sheet to the front of the LCD panel
before transportation. Protection sheet is used when a LCD
panel is supplied as a service spare part.
(3) AVOID VIBRATIONS AND IMPACTS
The unit may be broken if it is toppled sideways even when
properly packed. Continuous vibration may shift the gap of
the panel, and the unit may not be able to display images
properly. Ensure that the unit is carried by at least 2
persons and pay careful attention not to exert any vibration
or impact on it.
(4) DO NOT PLACE EQUIPMENT HORIZONTALLY
Ensure that it is placed upright and not horizontally during
transportation and storage as the LCD panel is very
vulnerable to lateral impacts and may break. During
transportation, ensure that the unit is loaded along the
traveling direction of the vehicle, and avoid stacking them
on one another. For storage, ensure that they are stacked
in 2 layers or less even when placed upright.
1-4 (N o.YA 665<R ev.001>)
1.3.2 OPTICAL FILTER (ON THE FRONT OF THE LCD PANEL)
SERVICE MENU
1. ADJUST
2. SELF CHECK
3. I2C STOP
LOB 0 FAN 0
AUD 0
ANA 9 DIG 9
HOUR 131070 MAX 0
RESET : TV 1
(1) Avoid placing the unit under direct sunlight over a
prolonged period of time. This may cause the optical filter
to deteriorate in quality and COLOUR.
(2) Clean the filter surface by wiping it softly and lightly with a
soft and lightly fuzz cloth (such as outing flannel).
(3) Do not use solvents such as benzene or thinner to wipe the
filter surface. This may cause the filter to deteriorate in
quality or the coating on the surface to come off. When
cleaning the filter, usually use the neutral detergent diluted
with water. When cleaning the dirty filter, use water-diluted
ethanol.
(4) Since the filter surface is fragile, do not scratch or hit it with
hard materials. Be careful enough not to touch the front
surface, especially when taking the unit out of the packing
case or during transportation.
1.3.3 PRECAUTIONS FOR REPLACEMENT OF EXTERIOR
PARTS
Take note of the following when replacing exterior parts (REAR
COVER, FRONT PANEL, etc.):
(1) Do not exert pressure on the front of the LCD panel (filter
surface). It may cause irregular COLOUR.
(2) Pay careful attention not to scratch or stain the front of the
LCD panel (filter surface) with hands.
(3) When replacing exterior parts, the front (LCD panel) should
be placed facing downward. Place a mat, etc. underneath
to avoid causing scratches to the front (filter surface).
1.3.4 HOW TO CHECK THE OPERATING TIME
This model has a function to count and record the LCD panel
operating time. The operating time can be checked in the
following procedure.
• Maximum count time = 131070 hours
(1) Press the [DISPLAY] key and [MUTING] key simulta-
neously, then enter the SERVICE MODE.
(2) When the Main Menu is displayed, press [2] key to enter
the self check mode.
(3) The operating time of the LCD panel is displayed in 5-digit
decimal number.(Refer to the below figure)
SERVICE MODE SCREEN
SERVICE MENU
1. ADJUST
2. SELF CHECK
3. I2C STOP
Press [2] key
Switch the display/ non-display
with the [ZOOM] key.
SELF CHECK MODE SCREEN (Page 1)
The operating time is displayed
LOB 0 FAN 0
AUD 0
ANA 9 DIG 9
HOUR 131070 MAX 0
RESET : TV 1
MAX is displayed when the maximum
count time is exceeded
*When the power is turned off with the remote control unit or the power
button of the main unit, the count restarts from the turn off time.
*When the power is turned off by disconnecting the power cord from the
AC outlet, the recorded time count less than 2 hours is not counted.
*When the operating time exceeds the maximum count time, "MAX" is
displayed to the right of the counted time, and the following count is
discontinued.
1.3.5 HOW TO RESET THE OPERATING TIME
(1) Press the [MENU] key simultaneously, then enter the
USER MENU.
(2) Select the "Features" from the USER MENU.
(3) Select the Blue back from the Features.
(4) Set the Blue back to "Off".
(5) Press the [DISPLAY] key and [MUTING] key
simultaneously, then enter the SERVICE MODE.
(6) When the Main Menu is displayed, press [2] key to enter
the self check mode.
(7) When the self check screen(page-1) is displayed, press
[ZOOM] key.
(8) "RESET : TV" is displayed under the operating time.
(9) Press the [TV/VIDEO] key to reset the operating time.
NOTE:
When the LCD PANEL UNIT is replaced, be sure to reset the
operating time following the above method.
(No.YA665<Rev.001>)1-5
2.1 SYSTEM SETTING
SERVICE MENU
1. ADJUST
2. SELF CHECK
3. I2C STOP
LOB 0 FAN 0
AUD 0
ANA 9 DIG 9
HOUR 131070 MAX 0
1
SECTION 2
SPECIFIC SERVICE INSTRUCTIONS
Be sure to carry out the following operation at the end of
the procedure.
(1) Press the [DISPLAY] key and [MUTING] key
simultaneously, then enter the SERVICE MODE.
(2) When the Main Menu is displayed, press [2] key to enter
the self check mode.
(3) Turn off the power by pressing the [POWER] key on the
remote control unit.
SERVICE MODE SCREEN
SERVICE MENU
1. ADJUST
2. SELF CHECK
3. I2C STOP
Press [2] key
SELF CHECK MODE SCREEN (Page 1)
LOB 0 FAN 0
AUD 0
ANA 9 DIG 9
HOUR 131070 MAX 0
1
2.2 FEATURES
Full HD
Full HD models deliver superbly detailed image reproduction
of more than 2 megapixels (1920 x 1080), which represents
double the resolution offered by WXGA panels.
100Hz/120Hz Clear Motion Drive ll
This function is able to display twice as many frames as a
conventional LCD display.
D.I.S.T. (Digital Image Scaling Technology)
This system uses line interpolation to double the number of
scanning lines and achieve high resolution, flicker-free picture.
Colour Management
This function ensures dull colours are compensated to
produce natural hues.
Picture Management
This function makes it easier to see the dark areas when a
picture has many dark areas, and makes it easier to see the
bright areas when a picture has many bright areas.
Smart Picture
This function detects the APL (Average Picture Level) and
adjusts the contrast suitable for what you are watching.
DIGITAL VNR
This function cuts down the amount of noise in the original
picture.
MPEG Noise Reduction
This function effects the block noise removal and mosquito NR
simultaneously.
MaxxAudio
MaxxAudio improves sound performance with four sound
features (MaxxBass, MaxxTreble, MaxxStereo and
MaxxVolume).
1-6 (No.YA665<Rev.001>)
2.3 MAIN DIFFERENCE LIST
Item LT-52GZ79 LT-52GZ79/BA LT-52GZ79/BA LT-52GZ79/S
POWER CORD EU Type (2 Pins) EU Type (2 Pins) EU Type (2 Pins) UK Type (3 Pins)
ANALOG PWB SFL-1237A-H2 SFL-1237A-H8 SFL-1237A-H2 SFL-1237A-H2
SW PWB SFL-7221A-H2 SFL-7221A-H8 SFL-7221A-H2 SFL-7221A-H2
LED PWB SFL-8728A-H2 SFL-8728A-H8 SFL-8728A-H2 SFL-8728A-H2
MAIN POW ASSY SFL-90A5A-H2 SFL-90A5A-H8 SFL-90A6A-H2 SFL-90A5A-H2
DC-DC PWB SFL-91A1A-H2 SFL-91A1A-H8 SFL-91A1A-H2 SFL-91A1A-H2
DIGITAL PWB SFL0D403A-H2 SFL0D403A-H8 SFL0D403A-H2 SFL0D404A-H2
2.4 TECHNICAL INFORMATION
2.4.1 LCD PANEL
This unit uses the flat type panel LCD (Liquid Crystal Display) panel that occupies as little space as possible, instead of the
conventional CRT (Cathode Ray Tube), as a display unit.
Since the unit has the two polarizing filter that are at right angles to each other, the unit adopts "normally black" mode, where light
does not pass through the polarizing filter and the screen is black when no voltage is applied to the liquid crystals.
2.4.1.1 SPECIFICATIONS
The following table shows the specifications of this unit.
Item Specifications
Maximum dimensions ( W × H × D ) 119.2 cm × 68.8 cm × 5.9 cm
Weight 19.0 kg
×
Screen size Diagonal: 132.1 cm (H: 93.1 cm
V: 52.4 cm)
Aspect ratio 16 : 9
Drive device / system a-Si-TFT active matrix system
Number of Pixels Horizontally 1920 × Vertically 1080
Pixel pitch (pixel size) Horizontally: 0.6 mm, Vertically: 0.6 mm
Displayed colour 16777216 colours 256 colours for R G and B
Brightness 500 cd/m
2
Contrast ratio 3000 : 1
Response time (G to G) 6 ms
View angle Horizontally: 178°, Vertically: 178°
Surface polarizer Anti-Glare type Low reflective coat
Colour filter Vertical stripe
Backlight Cold cathode fluorescent lamp × 24
Power supply voltage in LCD 12 V
Power supply voltage in inverter 24 V
Panel interface system LVDS (Low Voltage Differential Signaling)
2.4.1.2 PIXEL FAULT
There are three pixel faults - bright fault, dark fault and flicker fault - that are respectively defined as follows.
BRIGHT FAULT
In this pixel fault, a cell that should not light originally is lighting on and off.
For checking this pixel fault, input ALL BLACK SCREEN and find out the cell that is lighting on and off.
DARK FAULT
In this pixel fault, a cell that should light originally is not lighting or lighting with the brightness twice as brighter as originally lighting.
For checking this pixel fault, input 100% of each R/G/B color and find out the cell that is not lighting.
FLICKER FAULT
In the pixel fault, a cell that should light originally or not light originally is flashing on and off.
For checking this pixel fault, input ALL BLACK SCREEN signal or 100% of each RGB color and find out the cell that is flashing on
and off.
(No.YA665<Rev.001>)1-7
2.4.2 MAIN CPU PIN FUNCTION [IC7301
Pin Pin name I/O Function Pin Pin name I/O Function
1 TCK O Test purpose 65 D2 I/O Program ROM data for main CPU
2 TMS I Test purpose 66 D12 I/O Program ROM data for main CPU
3 TDI I Test purpose 67 D10 I/O Program ROM data for main CPU
4 TDO O Test purpose 68 VSS33 - GND
5 P2.8 I Input for HDMI CEC 69 VDD33 I 3.3V
6 P2.9 O Blue for OSD 70 D4 I/O Program ROM data for main CPU
7 P2.10 O Blue for OSD 71 D3 I/O Program ROM data for main CPU
8 P2.11 O Blue for OSD 72 D11 I/O Program ROM data for main CPU
9 P2.12 O Blue for OSD 73 RSTIN I Reset
10 P2.13 O Blue for OSD 74 POWER O Sleep state release for chassis CPU [Release : L]
11 P2.14 I Not used 75 P3.1 O Not used: Reset for digital tuner unit
12 P2.15 O Not used: Request for chassis CPU communication 76 REMOCON I Remote control
13 VSS33 - GND 77 P3.3 I Clock for OSD
14 VDD33 I 3.3V 78 P3.4 O Red for OSD
15 P4.5 O Not used 79 P3.5 O Red for OSD
16 A20 O Program ROM address for main CPU 80 P3.6 O Red for OSD
17 A19 O Program ROM address for main CPU 81 P3.7 O Red for OSD
18 A18 O Program ROM address for main CPU 82 MTST I/O Data transmission for chassis CPU communication
19 A17 O Program ROM address for main CPU 83 MTSR I/O Data receive for chassis CPU communication
20 VSS25 - GND 84 VSS33 - GND
21 VDD25 I 2.5V 85 VDD33 I 3.3V
22 A16 O Program ROM address for main CPU 86 VSS25 - GND
23 A8 O Program ROM address for main CPU 87 VDD25 I 2.5V
24 A7 O Program ROM address for main CPU 88 TXD0 I/O Not used: Data transmission for digital tuner unit
25 A9 O Program ROM address for main CPU 89 RXD0 I/O Not used: Data receive for digital tuner unit
26 A6 O Program ROM address for main CPU 90 P3.12 O Red for OSD
27 A5 O Program ROM address for main CPU 91 CLK O Clock for chassis CPU communication
28 A10 O Program ROM address for main CPU 92 P3.15 O Output for HDMI CEC
29 A11 O Program ROM address for main CPU 93 P5.14 O Green for OSD
30 A12 O Program ROM address for main CPU 94 P5.15 O Green for OSD
31 VSS33 - GND 95 TRIG_IN O Green for OSD
32 VDD33 I 3.3V 96 TRIG_OUT O Green for OSD
33 A4 O Program ROM address for main CPU 97 P6.2 O Green for OSD
34 A3 O Program ROM address for main CPU 98 P6.3 I/O I
35 A2 O Program ROM address for main CPU 99 P6.4 I/O I
36 A1 O Program ROM address for main CPU 100 P6.5 O Sync signal select for OSD / Teletext
37 A0 O Program ROM address for main CPU 101 IRQ O Not used: Interrupt request for digital tuner unit
38 A13 O Program ROM address for main CPU 102 VSYNC I Vertical sync
39 ARAS/A14 O Program ROM address for main CPU 103 HSYNC I Horizontal sync
40 CAS/A15 O Program ROM address for main CPU 104
41 VSS33 - GND 105 BLANK O Ys for OSD / Teletext
42 VDD33 I 3.3V 106 VDD33 I 3.3V
43 MEMCLK O Clock for memory 107 VSS33 - GND
44 CSSDRAM O Chip select for memory 108 XTAL1 I 6MHz for system clock
45 CLKEN O Clock enable for memory 109 XTAL2 O 6MHz for system clock
46 CSROM O Chip select for memory 110 VSSA - GND
47 RD O Read for memory 111 VDDA I 2.5V
48 UDQM O Control buffer of memory 112 R O R for Teletext
49 LDQM O Control buffer of memory 113 G O G for Teletext
50 WR O Write for memory 114 B O B for Teletext
51 D15 I/O Program ROM data for main CPU 115 VSSA - GND
52 VSS33 - GND 116 VDDA I 2.5V
53 VDD33 I 3.3V 117 CVBS2 I Not used
54 D7 I/O Program ROM data for main CPU 118 VSSA - GND
55 D0 I/O Program ROM data for main CPU 119 VDDA I 2.5V
56 D14 I/O Program ROM data for main CPU 120 CVBS1B I Not used
57 D8 I/O Program ROM data for main CPU 121 CVBS1A I Video for Teletext
58 D6 I/O Program ROM data for main CPU 122 VSSA - GND
59 D1 I/O Program ROM data for main CPU 123 VDDA I 2.5V
60 VSS33 - GND 124 KEY1 I Key scan data 1 [ON : H]
61 VDD33 I 3.3V 125 KEY2 I Key scan data 2 [ON : H]
62 D13 I/O Program ROM data for main CPU 126 MECA_SW I Main power ON / OFF control [ON : L]
63 D9 I/O Program ROM data for main CPU 127
64 D5 I/O Program ROM data for main CPU 128 TMODE I Test purpose
: DIGITAL PWB]
COR/RSTOUT
(KEYP2)P5.3
2
C bus clock (for main memory)
2
C bus Data (for main memory)
O Not used
I Not used: Error detection for digital tuner unit
1-8 (No.YA665<Rev.001>)
SECTION 3
DISASSEMBLY
3.1 CAUTION AT DISASSEMBLY
• Be sure to perform the SYSTEM SETTING, at the end of the
procedure.
• Make sure that the power cord is disconnected from the outlet.
• Pay special attention not to break or damage the parts.
• Make sure that there is no bent or stain on the connectors
before inserting, and firmly insert the connectors.
• Be sure to reattach the wire clamps removed during the
procedure to the original positions. (Attaching the wire clamps
in wrong positions may affect the performance.)
REFERENCE:
When removing each board, remove the connector if
necessary. The operation is easier if you write down the
connection points (connector numbers) of the connector. For
connection of each board, refer to the "WIRING DIAGRAM" of
the Standard Circuit Diagram.
3.2 DISASSEMBLY PROCEDURE
3.2.1 REMOVING THE REAR COVER (Fig.3-1)
(1) Remove the 1 screw [A].
(2) Remove the POWER CORD COVER in the direction of the
arrow.
(3) Remove the POWER CORD.
(4) Remove the 1 screw [B], 10 screws [C] and 11 screws [D].
(5) Remove the REAR COVER.
3.2.2 REMOVING THE ANALOG PWB (Fig.3-1)
• Remove the REAR COVER.
(1) Remove the 1 screw [E].
(2) Remove the TUNER BASE.
(3) Remove the 3 screws [F] and 7 screws [G].
(4) Remove the TERMINAL BASE.
(5) Remove the 3 screws [H].
(6) Remove the BACK BRACKET(R).
(7) Remove the 6 screws [J] and 2 screws [K].
(8) Remove the ANALOG PWB.
3.2.3 REMOVING THE DC-DC PWB (Fig.3-1)
• Remove the REAR COVER.
• Remove the BACK BRACKET(R).
(1) Remove the 3 screws [L].
(2) Remove the DC-DC PWB.
3.2.4 REMOVING THE POWER PWB (Fig.3-1)
• Remove the REAR COVER.
(1) Remove the 3 screws [M].
(2) Remove the BACK BRACKET(L).
(3) Remove the 11 screws [N].
(4) Remove the POWER PWB.
3.2.5 REMOVING THE SW PWB/CONTROL BASE (Fig.3-1)
• Remove the REAR COVER.
(1) Remove the 1 screw [P].
(2) Remove the KNOB BASE.
(3) Remove the 1 screw [Q].
(4) Remove the SW PWB.
(5) Remove the 1 screw [R].
(6) Remove the CONTROL BASE.
3.2.6 REMOVING THE DIGITAL PWB (Fig.3-1)
• Remove the REAR COVER.
• Remove the SHIELD COVER.
• Remove the SHIELD TERMINAL.
(1) Remove the 1 screw [S] and 3 screws [T].
(2) Remove the SHIELD TERMINAL.
(3) Remove the 9 screws [U].
(4) Remove the DIGITAL PWB.
CAUTION :
Make sure to perform the "SYSTEM SETTING", when
DIGITAL PWB is replaced.
3.2.7 REMOVING THE SPEAKER (Fig.3-1)
• Remove the REAR COVER.
(1) Remove the 6 screws [V].
(2) Remove the SPEKAER.
NOTE
When the SPEAKER is decomposed, the performance cannot
be kept.
3.2.8 REMOVING THE STAND (Fig.3-1)
(1) Remove the 1 screw [B] and 4 screws [W].
(2) Remove the STAND.
3.2.9 REMOVING THE LED PWB (Fig.3-1)
• Remove the REAR COVER.
• Remove the STAND.
• Remove the SPEKAER.
(1) Remove the 5 screws [AA] 4 screws [AB] and 8 screws
[AC].
(2) Remove the BOTTOM BRACKET.
(3) Remove the 2 hooks [b].
(4) Remove the LED PWB.
3.2.10 REMOVING THE LED LENS (Fig.3-1)
• Remove the REAR COVER.
• Remove the STAND.
• Remove the BOTTOM BRACKET.
• Remove the LED PWB.
(1) Remove the 2 screws [AD].
(2) Remove the LED LENS.
3.2.11 REMOVING THE LCD PANEL UNIT (Fig.3-1)
• Remove the REAR COVER.
• Remove the STAND.
• Remove the TUNER BASE.
• Remove the SPEKAER.
• Remove the BOTTOM BRACKET.
(1) Remove the 3 screws [AE] and 2 screws [AF].
(2) Remove the MAIN BASE.
(3) Remove the 6 screws [AG].
(4) Remove the SIDE BRACKET(L/R).
(5) Remove the 4 screws [AH].
(6) Remove the TOP FRAME in the direction of the arrow.
(7) Remove the LCD PANEL UNIT from the FRONT PANEL.
(No.YA665<Rev.001>)1-9
POWER CORD COVER
POWER CORD
A
C
W
B
SHIELD COVER
D
D
a
C
STAND
41 PIN
CN0LV1
The terminal of a connector is turned up and connects.
REAR COVER
H
J
M
BACK
BRACKET(R)
BACK
BRACKET(L)
POWER PWB
DC-DC PWB
L
AF
SHIELD BASE
U
N
DIGITAL PWB
AE
S
T
SHIELD
TERMINAL
AB
CN0LV2
51 PIN
The terminal of a connector is turned below and connects.
AA
AB
AC
F
AF
G
TERMINAL BASE
CONTROL
KNOB
SW PWB
CONTROL BASE
FRONT
P
KNOB BASE
Q
K
R
AG
SIDE BRACKET
TOP FRAME
AH
FRONT PANEL
TOP FRAME
AH
MAIN BASE
TUNER BASE
E
LCD PANEL UNIT
LED PWB
LED LENS
AD
Y
BOTTOM
BRACKET
SIDE BRACKET
AG
Y
b
SPEAKER
1-10 (No.YA665<Rev.001>)
Fig.3-1
3.2.12 REMOVING THE LCD CONTROL PWB (Fig.3-2)
• Remove the REAR COVER.
(1) Remove the 4 screws [A].
(2) Remove the LCD CONTROL PWB COVER.
(3) Remove the LCD CONTROL PWB.
3.2.13 REMOVING THE INVERTER PWB (Fig.3-2)
• Remove the REAR COVER.
(1) Remove the 7 screws [B].
(2) Remove the INVERTER PWB COVER.
(3) Remove the INVERTER PWB by sliding it in the direction
of the arrow.
(4) Follow the same steps when removing another INVERTER
PWB.
A
LCD CONTROL PWB COVER
B
INVERTER PWB
COVER
LCD CONTROL PWB
3.2.14 REMOVING THE BACK LIGHT UNIT (Fig.3-2)
• Remove the REAR COVER.
• Remove the STAND ASS'Y.
• Remove the SPEKAER.
• Remove the BOTTOM BRACKET.
• Remove the SIDE BRACKET.
• Remove the TOP FRAME.
• Remove the MAIN BASE.
• Remove the LCD PANEL UNIT.
(1) Remove the 14 screws [C].
(2) Remove the PANEL FRAME.
(3) Remove the LCD PANEL.
B
INVERTER PWB COVER
INVERTER PWB (SLAVE-T)
INVERTER PWB (SLAVE-B)
INVERTER PWB
(MASTER-T)
LCD PANEL UNIT
INVERTER PWB (MASTER-B)
FRONT
C
PANEL FRAME
C
C
C
LCD PANEL
FRONT
BACK LIGHT UNIT
Fig.3-2
(No.YA665<Rev.001>)1-11
3.3 MEMORY IC REPLACEMENT
SERVICE MENU
1. ADJUST
2. SELF CHECK
3. I2C STOP
S001 R DRIVE 137
PAL50 FULL STD H
• This model uses the memory IC.
• This memory IC stores data for proper operation of the video and drive circuits.
• When replacing, be sure to use an IC containing this (initial value) data.
3.3.1 MEMORY IC TABLE
Symbol Number of pins Mounting PWB Main content of data
IC7201
IC7602
48-pin DIGITAL PWB Program (Video process) of IC6001(System CPU) is memorized.
8-pin DIGITAL PWB Setting value of IC7301(MAIN CPU) is memorized.
3.3.2 MEMORY IC REPLACEMENT PROCEDURE
1. Power off
Switch off the power and disconnect the power plug from the AC outlet.
2. Replace the memory IC
Be sure to use the memory IC written with the initial setting values.
3. Power on
Connect the power plug to the AC outlet and switch on the power.
4. Receiving channel setting
Refer to the OPERATING INSTRUCTIONS and set the receive channels (Channels Preset) as described.
5. User setting
Check the user setting items according to the given in page later. Where these do not agree, refer to the OPERATING
INSTRUCTIONS and set the items as described.
6. SERVICE MODE setting
Verify what to set in the SERVICE MODE, and set whatever is necessary (Fig.3-2). Refer to the SERVICE ADJUSTMENT for setting.
3.3.3 SERVICE MODE SETTING
SERVICE MODE SCREEN
MAIN MENU SCREEN
SERVICE MENU
1. ADJUST
2. SELF CHECK
3. I2C STOP
ADJUSTMENT MODE SCREEN
S001 R DRIVE 137
PAL50 FULL STD H
Fig.3-2
SETTING ITEM
Setting items Settings Item No.
Video system setting Adjust S001 - S009
(Not used) Fixed T001 - T003
(Not used) Fixed M001 - M224
(Not used) Fixed F001 - F002
(Not used) Fixed D001
(Not used) Fixed Z001
1-12 (No.YA665<Rev.001>)
3.3.4 SETTINGS OF FACTORY SHIPMENT
3.3.4.1 BUTTON OPERATION 3.3.4.2 REMOTE CONTROL DIRECT OPERATION
Setting item Setting position
POWER Off
CHANNEL PR1
VOLUME 10
TV/AV TV
3.3.4.3 REMOTE CONTROL MENU OPERATION
(1) PICTURE
Setting item Setting position
Picture Mode Bright
White Balance Cool
Features
Super DigiPure Auto
Pull Down Auto
Colour Management On
Picture Management On
Smart Picture On
MPEG Noise Reduction On
Colour System Main Depends PR
Sub Auto
Zoom Panoramic
Setting item Setting position
CHANNEL PR1
VOLUME 10
ZOOM Auto
SUB PICTURE EXT-1
SUB POWER Off
(4) SET UP
Setting item Setting position
Auto Program Tv Channel Automatically Set
Edit/manual -
Language English
Video-1 Setting Component
Video-3 Setting Component
Teletext Language Group-1
HDMI Setting All setting is auto
PC Position Centre
Auto Demonstration Off
(2) SOUND
Setting item Setting position
Stereo / l•ll Stereo Sound
MaxxAudio Low
Balance Centre
Voice Enhancer Off
(3) FEATURES
Setting item Setting position
Timer Off
Channel Guard Off (ID:0000)
Appearance Type A
Blue Back On
Child Lock Off
Auto Shutoff Off
Favorite Setting Blank
Illumination Bright
Power Lamp On
Eco Sensor Off
(No.YA665<Rev.001>)1-13
3.4 REPLACEMENT OF CHIP COMPONENT
3.4.1 CAUTIONS
(1) Avoid heating for more than 3 seconds.
(2) Do not rub the electrodes and the resist parts of the pattern.
(3) When removing a chip part, melt the solder adequately.
(4) Do not reuse a chip part after removing it.
3.4.2 SOLDERING IRON
(1) Use a high insulation soldering iron with a thin pointed end of it.
(2) A 30w soldering iron is recommended for easily removing parts.
3.4.3 REPLACEMENT STEPS
1. How to remove Chip parts
2. How to install Chip parts
[Resistors, capacitors, etc.]
(1) As shown in the figure, push the part with tweezers and
alternately melt the solder at each end.
(2) Shift with the tweezers and remove the chip part.
[Transistors, diodes, variable resistors, etc.]
(1) Apply extra solder to each lead.
SOLDER
SOLDER
[Resistors, capacitors, etc.]
(1) Apply solder to the pattern as indicated in the figure.
(2) Grasp the chip part with tweezers and place it on the
solder. Then heat and melt the solder at both ends of the
chip part.
[Transistors, diodes, variable resistors, etc.]
(1) Apply solder to the pattern as indicated in the figure.
(2) Grasp the chip part with tweezers and place it on the
solder.
(3) First solder lead A as indicated in the figure.
(2) As shown in the figure, push the part with tweezers and
alternately melt the solder at each lead. Shift and remove
the chip part.
NOTE :
After removing the part, remove remaining solder from the
pattern.
1-14 (No.YA665<Rev.001>)
A
B
C
(4) Then solder leads B and C.
A
B
C
SECTION 4
SERVICE MENU
1. ADJUST
2. SELF CHECK
3. I2C STOP
ADJUSTMENT
4.1 ADJUSTMENT PREPARATION
(1) There are 2 ways of adjusting this TV : One is with the
REMOTE CONTROL UNIT and the other is the
conventional method using adjustment parts and
components.
(2) The adjustment using the REMOTE CONTROL UNIT is
made on the basis of the initial setting values. The
setting values which adjust the screen to the optimum
condition can be different from the initial setting
values.
(3) Make sure that connection is correctly made AC to AC
power source.
(4) Turn on the power of the TV and measuring instruments for
warming up for at least 30 minutes before starting
adjustments.
(5) If the receive or input signal is not specified, use the most
appropriate signal for adjustment.
(6) Never touch the parts (such as variable resistors,
transformers and condensers) not shown in the adjustment
items of this service adjustment.
4.2 PRESET SETTING BEFORE ADJUSTMENTS
Unless otherwise specified in the adjustment items, preset the
following functions with the REMOTE CONTROL UNIT.
Setting item Settings position
Picture Mode Standard
Picture Adjustments Centre
Colour Temp. Normal
Super Digipure Auto
Movie Theatre Auto
Colour Management On
Picture Management On
Zoom Full
4.3 MEASURING INSTRUMENT AND FIXTURES
• Signal generator (Pattern generator) [PAL]
• Remote control unit
4.5 BASIC OPERATION OF SERVICE MODE
4.5.1 HOW TO ENTER THE SERVICE MODE
(1) Press [DISPLAY] key and [MUTING] key on the remote
control unit simultaneously to enter the SERVICE MODE
SCREEN.
(2) In the SERVICE MENU, press the [1] key to display
ADJUSTMENT MODE SCREEN.
SERVICE MENU SCREEN
SERVICE MENU
1. ADJUST
2. SELF CHECK
3. I2C STOP
NOTE:
• Before enter the SERVICE MODE, press the [MODE] key to
confirm that "TV" position is indicated. If it is in a wrong
position, the SERVICE MODE operation cannot be
performed.
• When a number key other than the [1] key is pressed in the
SERVICE MODE SCREEN, the other relevant screen may
be displayed.
This is not used in the adjustment procedure. Press the
[MENU] key to return to the SERVICE MODE SCREEN.
4.5.2 HOW TO EXIT THE SERVICE MODE
Press the [MENU] key to exit the Service mode.
4.5.3 SERVICE MODE SELECT KEY LOCATION
[MUTING] key
[Nunber] key
4.4 ADJUSTMENT ITEMS
VIDEO CIRCUIT
• WHITE BALANCE (HIGH LIGHT) adjustment
[RETURN+] key
[Red] key
[MODE] key
[Function/] key
[DISPLAY] key
[Green] key
[MENU] key
[FUNCTION
/] key
(No.YA665<Rev.001>)1-15
4.5.4 ADJUSTMENT MODE
S001 R DRIVE 137
PAL50 FULL STD H
This mode is used to adjust the VIDEO CIRCUIT and the MTS CIRCUIT.
4.5.4.1 HOW TO ENTER THE ADJUSTMENT MODE
When the SERVICE MENU SCREEN of SERVICE MODE is displayed, press [1] key to enter the ADJUSTMENT MODE.
4.5.5 DESCRIPTION OF STATUS DISPLAY
(3) PICTURE MODE
SOFT : Soft
ADJUSTMENT MODE
SETTING ITEM No.
SETTING ITEM
SETTING VALUE (DATA)
STD : Standard
BRI : Bright
(4) COLOUR TEMP.
H : Cool
M: Mid
S001 R DRIVE 137
PAL50 FULL STD H
L: Warm
(5) SETTING ITEM NAME
Setting item name are displayed. For the setting item names
to be displayed, refer to "INITIAL SETTING VALUES IN THE
SERVICE MODE".
SIGNAL SYSTEM
ZOOM MODE
PICTURE MODE
COLOUR TEMP.
(1) SIGNAL SYSTEM
The signal displayed on the screen is displayed.
PAL50 : PAL50Hz (Composite / S-video)
PAL60 : PAL60Hz (Composite / S-video)
SECAM : SECAM
NTSC3 : NTSC3.58
NTSC4 : NTSC4.43
525I : 525i (Component)
525P : 525p
625I : 625i (Component)
625P : 625p
1125I5 : 1125i 50Hz
1125I6 : 1125i 60Hz
RGB5 : RGB 525i
RGB6 : RGB 625i
PCVGA : PC (VGA)
PCXGA : PC (XGA)
H525I : HDMI 525i
H525P : HDMI 525p
H625I : HDMI 625i
H625P : HDMI 625p
H750P : HDMI 750p
H125I5 : HDMI 1125i 50Hz
H125I6 : HDMI 1125i 60Hz
--- : OTHER
(2) ZOOM MODE
State of the SCREEN SIZE or MULTI PICTURE is displayed.
SINGLE SCREEN
FULL : Full
JUST : Full Native
PANO : Panoramic
1609 : 16:9 Zoom
1609S : 16:9 Zoom Subtitle
1409 : 14:9 Zoom
REGU : Regular
MULTI SCREEN
FRZ : Freeze screen
M12 : 12-pictures screen
(6) SETTING ITEM NO.
Setting item numbers are displayed. The setting item numbers
to be displayed are listed below.
Item No. Setting item
S001 - S009 Video system setting
T001 - T003 (NOT USED)
M001 - M224 (NOT USED)
F001 - F002 (NOT USED)
D001 (NOT USED)
Z001 (NOT USED)
(7) SETTING VALUE (DATA)
The SETTING VALUE is displayed.
4.5.6 CHANGE AND MEMORY OF SETTING VALUE
SELECTION OF SETTING ITEM
• [FUNCTION /] key.
For scrolling up / down the setting items.
S001...S009 ↔ T001...T003 ↔ M001...M224 ↔
F001...F002 ↔ D001 ↔ Z001↔return to S001
CHANGE OF SETTING VALUE (DATA)
• [FUNCTION /] key.
For scrolling up / down the setting values.
MEMORY OF SETTING VALUE (DATA)
Changed setting value is memorized by pressing [MUTING]
key.
1-16 (No.YA665<Rev.001>)
4.6 INITIAL SETTING VALUES IN THE SERVICE MODE
• Perform fine-tuning based on the "initial values" using the remote control when in the Service mode.
• The "initial values" serve only as an indication rough standard and therefore the values with which optimal display can be achieved
may be different from the default values. But, don't change the values that are not written in "ADJUSTMENT PROCEDURE". They
are fixed values.
4.6.1 VIDEO SYSTEM SETTING
Item No. Item Variable range Setting value
S001 R DRIVE 0 - 255 137
S002 G DRIVE 0 - 255 137
S003 B DRIVE 0 - 255 137
S004 RESERV 0 - 255 --S005 2D YC 0 - 255 0
S006 RESERV 0 - 255 --S007 RESERV 0 - 255 --S008 RESERV 0 - 255 --S009 RESERV 0 - 255 ---
4.6.2 NOT USED ITEM (All values are Fixed values)
Item No. Item Variable range Setting value
T001 RESERV 0 - 15 ---
T002 RESERV 0 - 63 ---
T003 RESERV 0 - 63 ---
M001 1E00 00 - FF ---
M002 1E01 00 - FF ---
M003 1E02 00 - FF ---
M004 1E03 00 - FF ---
M005 1E04 00 - FF ---
M006 1E05 00 - FF ---
M007 1E06 00 - FF ---
M008 1E07 00 - FF ---
M009 1E08 00 - FF ---
M010 1E09 00 - FF ---
M011 1E0A 00 - FF ---
M012 1E0B 00 - FF ---
M013 1E0C 00 - FF ---
M014 1E0D 00 - FF ---
M015 1E0E 00 - FF ---
M016 1E0F 00 - FF ---
M017 1E10 00 - FF ---
M018 1E11 00 - FF ---
M019 1E12 00 - FF ---
M020 1E13 00 - FF ---
M021 1E14 00 - FF ---
M022 1E15 00 - FF ---
M023 1E16 00 - FF ---
M024 1E17 00 - FF ---
M025 1E18 00 - FF ---
M026 1E19 00 - FF ---
M027 1E1A 00 - FF ---
M028 1E1B 00 - FF ---
M029 1E1C 00 - FF ---
M030 1E1D 00 - FF ---
M031 1E1E 00 - FF ---
Item No. Item Variable range Setting value
M032 1E1F 00 - FF ---
M033 1E20 00 - FF ---
M034 1E21 00 - FF ---
M035 1E22 00 - FF ---
M036 1E23 00 - FF ---
M037 1E24 00 - FF ---
M038 1E25 00 - FF ---
M039 1E26 00 - FF ---
M040 1E27 00 - FF ---
M041 1E28 00 - FF ---
M042 1E29 00 - FF ---
M043 1E2A 00 - FF ---
M044 1E2B 00 - FF ---
M045 1E2C 00 - FF ---
M046 1E2D 00 - FF ---
M047 1E2E 00 - FF ---
M048 1E2F 00 - FF ---
M049 1E30 00 - FF ---
M050 1E31 00 - FF ---
M051 1E32 00 - FF ---
M052 1E33 00 - FF ---
M053 1E34 00 - FF ---
M054 1E35 00 - FF ---
M055 1E36 00 - FF ---
M056 1E37 00 - FF ---
M057 1E38 00 - FF ---
M058 1E39 00 - FF ---
M059 1E3A 00 - FF ---
M060 1E3B 00 - FF ---
M061 1E3C 00 - FF ---
M062 1E3D 00 - FF ---
M063 1E3E 00 - FF ---
M064 1E3F 00 - FF ---
M065 1E40 00 - FF ---
M066 1E41 00 - FF ---
M067 1E42 00 - FF ---
M068 1E43 00 - FF ---
M069 1E44 00 - FF ---
M070 1E45 00 - FF ---
M071 1E46 00 - FF ---
M072 1E47 00 - FF ---
M073 1E48 00 - FF ---
M074 1E49 00 - FF ---
M075 1E4A 00 - FF ---
M076 1E4B 00 - FF ---
(No.YA665<Rev.001>)1-17
Item No. Item Variable range Setting value
M077 1E4C 00 - FF ---
M078 1E4D 00 - FF ---
M079 1E4E 00 - FF ---
M080 1E4F 00 - FF ---
M081 1E50 00 - FF ---
M082 1E51 00 - FF ---
M083 1E52 00 - FF ---
M084 1E53 00 - FF ---
M085 1E54 00 - FF ---
M086 1E55 00 - FF ---
M087 1E56 00 - FF ---
M088 1E57 00 - FF ---
M089 1E58 00 - FF ---
M090 1E59 00 - FF ---
M091 1E5A 00 - FF ---
M092 1E5B 00 - FF ---
M093 1E5C 00 - FF ---
M094 1E5D 00 - FF ---
M095 1E5E 00 - FF ---
M096 1E5F 00 - FF ---
M097 1E60 00 - FF ---
M098 1E61 00 - FF ---
M099 1E62 00 - FF ---
M100 1E63 00 - FF ---
M101 1E64 00 - FF ---
M102 1E65 00 - FF ---
M103 1E66 00 - FF ---
M104 1E67 00 - FF ---
M105 1E68 00 - FF ---
M106 1E69 00 - FF ---
M107 1E6A 00 - FF ---
M108 1E6B 00 - FF ---
M109 1E6C 00 - FF ---
M110 1E6D 00 - FF ---
M111 1E6E 00 - FF ---
M112 1E6F 00 - FF ---
M113 1E70 00 - FF ---
M114 1E71 00 - FF ---
M115 1E72 00 - FF ---
M116 1E73 00 - FF ---
M117 1E74 00 - FF ---
M118 1E75 00 - FF ---
M119 1E76 00 - FF ---
M120 1E77 00 - FF ---
M121 1E78 00 - FF ---
M122 1E79 00 - FF ---
M123 1E7A 00 - FF ---
M124 1E7B 00 - FF ---
M125 1E7C 00 - FF ---
M126 1E7D 00 - FF ---
Item No. Item Variable range Setting value
M127 1E7E 00 - FF ---
M128 1E7F 00 - FF ---
M129 1E80 00 - FF ---
M130 1E81 00 - FF ---
M131 1E82 00 - FF ---
M132 1E83 00 - FF ---
M133 1E84 00 - FF ---
M134 1E85 00 - FF ---
M135 1E86 00 - FF ---
M136 1E87 00 - FF ---
M137 1E88 00 - FF ---
M138 1E89 00 - FF ---
M139 1E8A 00 - FF ---
M140 1E8B 00 - FF ---
M141 1E8C 00 - FF ---
M142 1E8D 00 - FF ---
M143 1E8E 00 - FF ---
M144 1E8F 00 - FF ---
M145 1E90 00 - FF ---
M146 1E91 00 - FF ---
M147 1E92 00 - FF ---
M148 1E93 00 - FF ---
M149 1E94 00 - FF ---
M150 1E95 00 - FF ---
M151 1E96 00 - FF ---
M152 1E97 00 - FF ---
M153 1E98 00 - FF ---
M154 1E99 00 - FF ---
M155 1E9A 00 - FF ---
M156 1E9B 00 - FF ---
M157 1E9C 00 - FF ---
M158 1E9D 00 - FF ---
M159 1E9E 00 - FF ---
M160 1E9F 00 - FF ---
M161 1EA0 00 - FF ---
M162 1EA1 00 - FF ---
M163 1EA2 00 - FF ---
M164 1EA3 00 - FF ---
M165 1EA4 00 - FF ---
M166 1EA5 00 - FF ---
M167 1EA6 00 - FF ---
M168 1EA7 00 - FF ---
M169 1EA8 00 - FF ---
M170 1EA9 00 - FF ---
M171 1EAA 00 - FF ---
M172 1EAB 00 - FF ---
M173 1EAC 00 - FF ---
M174 1EAD 00 - FF ---
M175 1EAE 00 - FF ---
M176 1EAF 00 - FF ---
1-18 (No.YA665<Rev.001>)
Item No. Item Variable range Setting value
M177 1EB0 00 - FF ---
M178 1EB1 00 - FF ---
M179 1EB2 00 - FF ---
M180 1EB3 00 - FF ---
M181 1EB4 00 - FF ---
M182 1EB5 00 - FF ---
M183 1EB6 00 - FF ---
M184 1EB7 00 - FF ---
M185 1EB8 00 - FF ---
M186 1EB9 00 - FF ---
M187 1EBA 00 - FF ---
M188 1EBB 00 - FF ---
M189 1EBC 00 - FF ---
M190 1EBD 00 - FF ---
M191 1EBE 00 - FF ---
M192 1EBF 00 - FF ---
M193 1EC0 00 - FF ---
M194 1EC1 00 - FF ---
M195 1EC2 00 - FF ---
M196 1EC3 00 - FF ---
M197 1EC4 00 - FF ---
M198 1EC5 00 - FF ---
M199 1EC6 00 - FF ---
M200 1EC7 00 - FF ---
M201 1EC8 00 - FF ---
M202 1EC9 00 - FF ---
M203 1ECA 00 - FF ---
Item No. Item Variable range Setting value
M204 1ECB 00 - FF ---
M205 1ECC 00 - FF ---
M206 1ECD 00 - FF ---
M207 1ECE 00 - FF ---
M208 1ECF 00 - FF ---
M209 1ED0 00 - FF ---
M210 1ED1 00 - FF ---
M211 1ED2 00 - FF ---
M212 1ED3 00 - FF ---
M213 1ED4 00 - FF ---
M214 1ED5 00 - FF ---
M215 1ED6 00 - FF ---
M216 1ED7 00 - FF ---
M217 1ED8 00 - FF ---
M218 1ED9 00 - FF ---
M219 1EDA 00 - FF ---
M220 1EDB 00 - FF ---
M221 1EDC 00 - FF ---
M222 1EDD 00 - FF ---
M223 1EDE 00 - FF ---
M224 1EDF 00 - FF ---
F001 DD 0 - 1 ---
F002 RAM REF 0 - 1 ---
D001 RESERV 0 - 255 ---
Z001 RESERV 0 - 255 ---
4.7 ADJUSTMENT PROCEDURE
4.7.1 VIDEO CIRCUIT
Item
WHITE
BALANCE
Measuring
instrument
Remote
control unit
Test point Adjustment part Description
(HIGHLIGHT)
Signal
generator
[1.ADJUST]
S001: R DRIVE (Red drive)
S002: G DRIVE (Green drive)
S003: B DRIVE (Blue drive)
(1) Receive a PAL 75% all white signal.
(2) Set PICTURE MODE to "Standard".
(3) Set ZOOM to "Full".
(4) Set WHITE BALANCE to "Mid".
(5) Select "1.ADJUST" from the SERVICE MODE.
(6) Adjust to Keep one of <S001> (Red drive),
<S002> (Green drive) or <S003> (Blue drive)
unchanged, then lower the other two so that the
all-white screen is equally white throughout.
NOTE:
Set one or more of <S001>, <S002>, and
<S003> to "137".
(7) Check that white balance is properly tracked
from low light to high light. If the white balance
tracking is deviated, adjust to correct it.
(8) Press the [MUTING] key to memorize the set
value.
(No.YA665<Rev.001>)1-19
SECTION 5
SERVICE MENU
1. ADJUST
2. SELF CHECK
3. I2C STOP
TMP 0 L 1 0
L 2 0 DDT 0
FAN 0 L C 0
IRS 0
LOB 0 FAN 0
AUD 0
ANA 9 DIG 9
HOUR 131070 MAX 00
00
TROUBLESHOOTING
5.1 SELF CHECK FEATURE
5.1.1 OUTLINE
This unit comes with the "Self check" feature, which checks the
operational state of the circuit and displays/saves it during
failure.Diagnosis is performed when power is turned on, and
information input to the main microcomputer is monitored at all
time.Diagnosis is displayed in 2 ways via screen display and LED
flashes. Failure detection is based on input state of I
2
C bus and
the various control lines connected to the main microcomputer.
5.1.2 HOW TO ENTER THE SELF CHECK MODE
Before enter the SELF CHECK MODE, press the [MODE] key to
confirm that "TV" position is indicated. If it is in a wrong position,
the SELF CHECK MODE operation cannot be performed.
(1) Press the [DISPLAY] key and [MUTING] key
simultaneously, then enter the SERVICE MODE.
(2) Press the [2] key SELF CHECK MODE.
(3) Press the [RED] key to enter Page 2 of the SELF CHECK
MODE.
*Use the [GREEN] key to toggle between Page 1 and Page 2.
NOTE:
When a number key other than the [2] key is pressed in the
SERVICE MODE screen, the other relevant screen may be
displayed.
This is not used in the SELF CHECK MODE. Press the
[MENU] key to return to the MAIN MENU SCREEN.
5.1.3 HOW TO EXIT THE SELF CHECK MODE
To Save Failure History:
Turn off the power by unplugging the AC power cord plug when
in the Self check display mode.
To Clear (Reset) Failure History:
Turn off the power by pressing the [POWER] key on the remote
control unit when in the Self check display mode.
5.1.4 FAILURE HISTORY
Failure history can be counted up to 9 times for each item. When
the number exceeds 9, display will remain as 9. Failure history
will be stored in the memory unless it has been deleted.
5.1.5 POINTS TO NOTE WHEN USING THE SELF CHECK
FEATURE
In addition to circuit failures (abnormal operation), the following
cases may also be diagnosed as "Abnormal" and counted.
(1) Temporary defective transmissions across circuits due to
pulse interruptions.
(2) Misalignment in the on/off timing of power for I
2
C bus (Vcc)
when turning on/off the main power.
Therefore, turn on the main power, and then wait for about 3
seconds before starting Self check.
If recurrences are expected, ensure to clear (reset) the failure
history and record the new diagnosis results.
SERVICE MENU SCREEN
SERVICE MENU
1. ADJUST
2. SELF CHECK
3. I2C STOP
Press [2] key
SELF CHECK MODE SCREEN (Page 1)
Item
LOB 0 FAN 0
AUD 0
ANA 9 DIG 9
HOUR 131070 MAX 00
00
Press [Red] key
Failure
history
Failure
Item
history
Press [Green] key
SELF CHECK MODE SCREEN (Page 2)
1-20 (No.YA665<Rev.001>)
Not used
TMP 0 L 1 0
L 2 0 DDT 0
FAN 0 L C 0
IRS 0
Fig.5-1
5.1.6 DETAILS
Self check is performed for the following items: (---- is not used items)
<Page 1 of screen>
Detection item Display Detection content
Low bias line short
protection
LOB Confirm the operation of the low bias protection
circuit.
, Q9401, Q9601, Q9703 [DC-DC PWB]
IC9401
---- FAN ---- ---- ----
---- AUD ---- ---- ----
Devices on the ANALOG
PWB
ANA Confirmation of reply of ACK signal which uses
2
C communication.
I
IC101
, IC102, IC601, IC3501, TU3001
[ANALOG PWB]
Devices on the DIGITAL
PWB
DIG Confirmation of reply of ACK signal which uses
2
C communication.
I
[DIGITAL PWB]
IC5001
<Page 2 of screen>
Detection item Display Detection content
---- TMP ---- ---- ----
---- L1 ---- ---- ----
---- L2 ---- ---- ----
---- DDT ---- ---- ----
---- FAN ---- ---- ----
---- LC ---- ---- ----
---- IRS ---- ---- ----
Diagnosis
signal (line)
Detection timing
LB_PRO Detection starts 3 seconds after
the power is turned on. If error
continues between 200 ms the
power is turned off.
SDA Detection starts 3 seconds after
the power is turned on. If it checks
whenever I
2
C communication is
performed and no reply of ACK
signal an error will be counted.
SDA Detection starts 3 seconds after
the power is turned on. If it checks
whenever I2C communication is
performed and no reply of ACK
signal an error will be counted.
Diagnosis
signal (line)
Detection timing
5.1.7 METHOD OF DISPLAY WHEN A RASTER IS NOT OUTPUT
In the state where a raster is not output by breakdown of the set, an error is displayed by blink of the POWER LED.
Type of error POWER LED flash cycle
Low bias line short protection POWER LED turnig on and off at 1 second intervals.
<Explanation of operation>
If error is detected, the power is turned off.
Shortly after a power is turned off, POWER LED will be blinked.
Power cannot be turned on until the power cord takes out and inserts, after a power is turned off.
(No.YA665<Rev.001>)1-21
Victor Company of Japan, Limited
Display Division 12, 3-chome, Moriya-cho, Kanagawa-ku, Yokohama-city, Kanagawa-prefecture, 221-8528, Japan
(No.YA665<Rev.001>)
Printed in Japan
VPT
SCHEMATIC DIAGRAMS
WIDE LCD PANEL TELEVISION
LT-52GZ79, LT-52GZ79/BA,
LT-52GZ79/E, LT-52GZ79/S
BASIC CHASSIS
DVD-ROM No.SML2008Q3
FL5
COPYRIGHT © 2008 Victor Company of Japan, Limited.
No.YA665<Rev.001>
2008/12
LT-52GZ79, LT-52GZ79/BA, LT-52GZ79/E, LT-52GZ79/S
STANDARD CIRCUIT DIAGRAM
NOTE ON USING CIRCUIT DIAGRAMS
1.SAFETY
The components identified by the symbol and shading are
critical for safety. For continued safety replace safety ciritical
components only with manufactures recommended parts.
2.SPECIFIED VOLTAGE AND WAVEFORM VALUES
The voltage and waveform values have been measured under the
following conditions.
(1)Input signal : Colour bar signal
(2)Setting positions of
each knob/button and
variable resistor
(3)Internal resistance of tester
(4)Oscilloscope sweeping time
(5)Voltage values
Since the voltage values of signal circuit vary to some extent
according to adjustments, use them as reference values.
: Original setting position
when shipped
: DC 20kΩ/V
: H
: V
: Othters
: All DC voltage values
20µs / div
5ms / div
Sweeping time is
specified
3.INDICATION OF PARTS SYMBOL [EXAMPLE]
In the PW board
: R1209
R209
Type
No indication
MM
PP
MPP
MF
TF
BP
TAN
(3)Coils
No unit
Others
(4)Power Supply
Respective voltage values are indicated
(5)Test point
: Test point
(6)Connecting method
: Ceramic capacitor
: Metalized mylar capacitor
: Polypropylene capacitor
: Metalized polypropylene capacitor
: Metalized film capacitor
: Thin film capacitor
: Bipolar electrolytic capacitor
: Tantalum capacitor
: [µH]
: As specified
: B1
: 9V
: Connector
: Receptacle
: Only test point display
: Wrapping or soldering
: B2 (12V
: 5V
)
4.INDICATIONS ON THE CIRCUIT DIAGRAM
(1)Resistors
Resistance value
No unit : [Ω]
K
M
Rated allowable power
No indication : 1/16 [W]
Others : As specified
Type
No indication
OMR
MFR
MPR
UNFR
FR
Composition resistor 1/2 [W] is specified as 1/2S or Comp.
(2)Capacitors
Capacitance value
1 or higher : [pF]
less than 1
Withstand voltage
No indication : DC50[V]
Others : DC withstand voltage [V]
AC indicated
Electrolytic Capacitors
47/50[Example]: Capacitance value [µF]/withstand voltage[V]
: [kΩ]
: [MΩ]
: Carbon resistor
: Oxide metal film resistor
: Metal film resistor
: Metal plate resistor
: Uninflammable resistor
: Fusible resistor
: [µF]
: AC withstand voltage [V]
(7)Ground symbol
: LIVE side ground
: ISOLATED(NEUTRAL) side ground
: EARTH ground
: DIGITAL ground
5.NOTE FOR REPAIRING SERVICE
This model's power circuit is partly different in the GND. The
difference of the GND is shown by the LIVE : ( ) side GND and the
ISOLATED(NEUTRAL) : ( ) side GND. Therefore, care must be
taken for the following points.
(1)Do not touch the LIVE side GND or the LIVE side GND and the
ISOLATED(NEUTRAL) side GND simultaneously. if the above
caution is not respected, an electric shock may be caused.
Therefore, make sure that the power cord is surely removed from
the receptacle when, for example, the chassis is pulled out.
(2)Do not short between the LIVE side GND and ISOLATED(NEUTRAL
side GND or never measure with a measuring apparatus measure
with a measuring apparatus ( oscilloscope, etc.) the LIVE side GND
and ISOLATED(NEUTRAL) side GND at the same time.
If the above precaution is not respected, a fuse or any parts will be broken.
Since the circuit diagram is a standard one, the circuit and
circuit constants may be subject to change for improvement
without any notice.
NOTE
Due improvement in performance, some part numbers show
in the circuit diagram may not agree with those indicated in
the part list.
When ordering parts, please use the numbers that appear
in the Parts List.
)
(No.YA665<Rev.001>)2-1
CONTENTS
SEMICONDUCTOR SHAPES ......................................................................2-2
WIRING DIAGRAM .......................................................................................2-3
BLOCK DIAGRAM ........................................................................................2-5
CIRCUIT DIAGRAMS ...................................................................................2-7
ANALOG PWB CIRCUIT DIAGRAM ........................................................................................................... 2-7
DIGIT AL PWB CIRCUIT DIA GRAM .......................................................................................................... 2-19
POWER PWB CIRCUIT DIA GRAM ........................................................................................................... 2-43
DC-DC PWB CIRCUIT DIAGRAM ............................................................................................................. 2-49
LED PWB CIRCUIT DIAGRAM................................................................................................................. 2-51
SW PWB CIRCUIT DIAGRAM .................................................................................................................. 2-53
PATTERN DIAGRAMS .............................................................................. 2-55
ANALOG PWB P A TTERN ........................................................................................................................ 2-55
DIGIT AL PWB PA TTERN ......................................................................................................................... 2-57
POWER PWB PA TTERN .......................................................................................................................... 2-61
DC-DC PWB P A TTERN ............................................................................................................................ 2-63
LED PWB P ATTERN ................................................................................................................................ 2-63
SW PWB P ATTERN ................................................................................................................................. 2-64
VOLTAGE CHARTS ................................................................................... 2-65
WAVEFORMS ............................................................................................ 2-67
USING P.W. BOARD
P.W.B ASS㵭Y name LT-52GZ79 LT-52GZ79/E LT-52GZ79/S LT-52GZ79/BA
ANALOG P.W. BOARD
SW P.W. BOARD
LED P.W. BOARD
POWER P.W. BOARD
DC-DC P.W. BOARD
DIGITAL P.W. BOARD
SFL-1237A-H2
SFL-7221A-H2
SFL-8728A-H2
SFL-90A5A-H2
SFL-91A1A-H2
SFL0D403A-H2
φ
φ
φ
SFL-90A6A-H2
φ
φ
φ
φ
φ
SFL-90A5A-H2
φ
SFL0D404A-H2
SFL-1237A-H8
SFL-7221A-H8
SFL-8728A-H8
SFL-90A5A-H8
SFL-91A1A-H8
SFL0D403A-H8
SEMICONDUCTOR SHAPES
TRANSISTOR
BOTTOM VIEW FRONT VIEW TOP VIEW
E
C
B
IC
BOTTOM VIEW FRONT VIEW TOP VIEW
OUT
E
IN
ECB
IN OUTE
B
(G)E(S)C(D)
1 N
ECB
ECB
1 N
CHIP TR
1
C
BE
N
CHIP IC
TOP VIEW
N
1
2-2(No.YA665<Rev.001>)
1
N
2-4(No.YA665<Rev.001>)(No.YA665<Rev.001>)2-3
21
91
101
110
15 1
41 21
14
13
12
501401
CN00R
CN00U
CN0SR
CN001
CN002
CN0SL
CN100U
F9001
250V/6.3A
CN00W
CN00P
CN00F
CN00A
CN0PW
114
15 1
115
CN00A
CN0DC
123
CN00H
123
CN00H
CN10F
ANALOG
TUNER
115
CN0DC
14
CN001W
150140
CN001
CN002
CN100R
91
151
41 1
CN0LV2
CN0LV1
CN00Q
110
LED PWB
DC-DC PWB
TOP
TOP
TOP
TOP
TOP
TOP
DIGITAL PWB
ANALOG PWB
SW PWB
POWER PWB
POWER CORD
SPEAKER (R) SPEAKER (L)
LCD PANEL UNIT
CONTROL PWB
INVERTER PWB
(SLAVE SIDE)
INVERTER PWB
(MASTER SIDE)
WIRING DIAGRAM
(No.YA665<Rev.001>)2-5 2-6(No.YA665<Rev.001>)
IC8751
EE_CDS
E.E. SENSOR
IC5001
DQ
ADRS
IC5002
IC5003
FRAME INTERPOLATE/
LCD CONTROL/
BACK-LIGHT CONTROL
FRAME
MEMORY
IC5503
IC6503
LVDS
DRIVE
DBO 0-9
DGO 0-9
DRO 0-9
DBE 0-9
DGE 0-9
DRE 0-9
SPEAKER(R)
SPEAKER(L)
DIGITAL PWB
SW PWB
OSDR1-5
OSDG1-5
OSDB1-5
J7001
S7701~S7706
S7707
PROGRAM MEMORY
PROGRAM MEMORY
MAIN CPU
IC7201
FRAME MEMORY
IC6101
IC7203
HDMI
DIGITAL IN
HDMI-1
HDMI
RECEIVE
IC7301
SETTING DATA
MEMORY
IC7602
IC6001
DV1_R0-7
D0-15
D0-15
A0-21
SD_DQ1-32
A0-21
DV1_G0-7
DV1_B0-7
MI_TX
MI_RX
MI_CLK
HDMI
DIGITAL IN
HDMI-2
HDMI
DIGITAL IN
HDMI-3
AUDIO L/R
S-VIDEO
VIDEO-1
VIDEO
DEC_Y
V1_VIN
V2_VIN
V3_VIN
V1_YIN
V1_CIN
V2_CIN
TV_L/R
V1_L/R
V2_L/R
V3_L/R
DIN_SL/SR
V2_YIN
MAIN_VY
SUB_VY
SUB_VY
Y_OUT
MAIN_VY
V3_G_Y
V1_G_Y
V1_B_Cb
V1_R_Cr
PC_G
TEXT_G
MAIN_C
V3_R_Cr
PC_R
TEXT_R
SUB_C
V3_B_Cb
PC_B
TEXT_B
BY_OUT
RY_OUT
SUB_C
MAIN_C
HP_L/R
AUDIO L/R
S-VIDEO
VIDEO-2
VIDEO
AUDIO L/R
HDMI-1
AUDIO INPUT
L/R
Pr/Pb
Y
Pr/Pb
Y
PC IN
(D-SUB)
VIDEO
VIDEO-3
Y/C
MIX
AUDIO SELECT
IC106
POWER
CONTROL
SWITCH
HEADPHONE
YM_IN
BYM_IN
RYM_IN
KEY_1/2
MECA_SW
TV_MAIN
TU3001
UHF/VHV
TUNER
IC3501
MULTI SOUND PROCESS
REMOCON
POWER_LED
IR RECEIVE
LED PWB
LCD
(PANEL)
SUB CPU/A-D CONVERT/YC SEPARATE/
CHROMA DEMOD./FORMAT CONVERT/
ENHANCE/NR/RGB PROCESS/OSD MIX
A-D
CONVERT
A-D
CONVERT
YC SEPARATE/
CHROMA DEMOD./
FORMAT
CONVERT/
ENHANCE/
NOISE REDUCT
RGB
PROCESS
OSD
MIX
SUB CPU
DVI_L/R
DIN_L/R
DIN_DL/DR
IC8752
HEADPHONE AMP
IC751
POWER
D8702
IC102
VIDEO SELECT
IC101
VIDEO/AUDIO SELECT
TEXT DATA
MEMORY
IC7303
SIF_OUT
MONO
TV_L/R
ANALOG PWB
D-A VOLUME
AGC
DSP
A-D
A-D
DEMOD.
MATRIX
Y/C
MIX
AUDIO L/R
S-VIDEO
MONITOR
OUT
VIDEO
AMP
IC105
MON_L/R
MON_VOUT
MON_YOUT
MON_COUT
AMP
IC104
MAIN_L/R
AMP
IC103
MAIN_CCD
TEXT_R/G/B
IC6001
IC601
AMP_L/R
AUDIO OUT
AUDIO CONTROL
A-D
CONVERT
D-A
CONVERT
VOLUME
BASS
BOOST
TREBLE
BOOST
STEREO
BOOST
EQUALIZE
DBU00-09
DGY00-09
DRV00-09
MAIN_L/R
BLOCK DIAGRAM
2-8(No.YA665<Rev.001>)(No.YA665<Rev.001>)2-7
ANALOG PWB ASS'Y (1/6)
SFL-1237A-H2 [LT-52GZ79, LT-52GZ79/E, LT-52GZ79/S]
SFL-1237A-H8 [LT-52GZ79/BA]
ggs10021001a_12/4_2/6_0.0
18.432MHz
STANBY
ADR_SEL
D_CTR_OUT0
D_CTR_OUT1
NC
XTAL_OUT
XTAL_IN
TESTEN
ANA_IN-
ANA_IN+
AVSUP
AVSS
MONO_IN
VREFTOP
SC1_IN_R
SC1_IN_L
ASG1
SC2_IN_R
SC2_IN_L
AGNDC
AHVSS
CAPL_M
AHVSUP
NC
SC1_OUT_R
SC1_OUT_L
VREF1
NC
DACM_L
DACM_R
NC
VREF2
SCL
SDA
I2S_CL
I2S_WS
I2S_DA_OUT
TP
DVSUP
DVSS
NC
NC
I2S_DA_IN
NC
RESETQ
NC
NC
AUDIO_OUT
BM
AFT
VIDEO_OUT
IF_OUT
BTL
NC
SIF_OUT
RF_AGC
BT
SCL
SW2
SW1
NC
SDA
NC
NC
G
OUTIN
BUFFER
LT-52GZ79BA
LT-52GZ79EA
LT-52GZ79SA
LT-52GZ79A
LT47GZ78NASKLT42GZ78NASK
OR 2SC1623A/5-6/-X
SFL-1237A -
LT-47GZ78BLT-42GZ78B
LT-47GZ78SA
LT-47GZ78TA
LT-47GZ78BA
LT-42GZ78SA
:NCB11AK-106X
:DTC144EKA-X
:DTC323TK-X
:2SA1037AK/QR/-X
:2SC2412K/QR/-X
:NRSA63J-0R0X
:OPTION(NON MOUNT)
*4
*5
*3
*2
*1
0
OPEN
LT-47GZ78ASFL-1236A
ASSY NO. - MODEL LIST
- NOTE -
LT-42GZ78TA
GND
GND
GND
1_13O
1_14O
1_14O
:2SC3928A/QR/-X
LT-42GZ78BA
GND
1_15O
LT-42GZ78A-
1_5O
NPN
5_1O3_2L1_22L
5_1O3_2L1_22L
GND
GND
GND
GND
GND
GND
GND
GND
TV_R
TV_L
BS_A9V
BS_A5V
GND
32V
MSP_RSTO
BS_A5V
GND
BS_A5V
GND
BS_A5V
SCL3A5
BS_A9V
GND
GND
GND
1
AFT1
TV_R
TV_L
TV_MAIN
MSP_RSTO
SCL3A5
SDA3A5
CH
C3514
2p
/16
C3527
.1
/10
C3528
100
R3510
OPEN
R3509
OPEN
NRSA02J-0R0X
L3503
R3514
100
R3515
100
/10
C3516
100
NQL79GM-4R7X
L3504
NQR0436-001X
LC3501
/16
C3515
.1
C3517
.01
R3516
100
C3526
.01
/16
C3525
10
/16
C3529
10
/16
C3531
.1
/16
C3537
.1
/16
C3502
.1
C3503 .01
C3512 .01
QAX0773-001Z
X3501
44
43
42
41
40
39
38
37
36
35
34
33 32 31 30 29 28 27 26 25 24 23
22
21
20
19
18
17
16
15
14
13
12
1110987654321
MSP3417GQGB8V3X
IC3501
NQR0389-003X
K3502
CH
C3524
.001
CH
C3523
.001
NCF31AZ-105X
C3534
NCF31AZ-105X
C3535
CH
C3513
2p
NQR0389-003X
K3501
C3545
.01
C3547
.01
R3547
680
R3546
680
R3016
100
UN2213-X
Q3503
C3518
2200p
R3517
10k
NQL79GM-220X
L3003
/10
C3546
1/10
C3544
1
C3530
*5
321
BA80BC0FP-X
IC3504
C3536
*5
C3501
*5
/50
C3011
10
Q3001
NPN
R3011
1k
R3010
1k
R3019
1K
R3020
1K
R3018
OPEN
R3017
OPEN
R3001
OPEN
R3006
100
R3021
100
C3008
.01
R3024
1K
R3025
1K
/50
C3009
10
R3007 100
R3009
2.2k
R3008
0
C3012
.01
C3010
.01
/50
C3002
10
NQL79GM-100X
L3002
C3015
.01
NRSA02J-0R0X
L3506
R3022
OPEN
R3023
OPEN
/50
C3014
10
C3001
0.0022
R3026
100
NCF31AZ-105X
C3007
C3563
OPEN
Q3504
OPEN
R3503
OPEN
R3502
OPEN
R3501
OPEN
R35060R3505
0
L3501
OPEN
NRSA02J-0R0X
L3502
C3562
OPEN
C35640C3561
.01
C3511 .01
R3508
1k
2SC3928A/QR/-X
BUFFER
Q3502
R3504
0
C3504
OPEN
NRSA02J-0R0X
L3507
R3512
1k
R3511
2.2k
Q3003
NPN
Q3002
NPN
Y3001
OPEN
Y3002
0
R3015
100
R3014
100
C3003
OPEN
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
QAU0390-001
TU3001
C3505
OPEN
C3565 OPEN
C3533
OPEN
C3532
OPEN
UHF/VHV
TUNER
MULTI SOUND PROCESS
ANALOG PWB
(2/6)
ANALOG PWB
(2/6,6/6)
CIRCUIT DIAGRAMS
A
NALOG PWB CIRCUIT DIAGRAM (1/6)
(No.YA665<Rev.001>)2-9 2-10(No.YA665<Rev.001>)
ANALOG PWB ASS'Y (2/6)
SFL-1237A-H2
[LT-52GZ79, LT-52GZ79/E, LT-52GZ79/S]
SFL-1237A-H8
[LT-52GZ79/BA]
ggs10021001a_12/4_1/6_0.0
OR 2SC1623A/5-6/-X
LT-52GZ79BA
LT-52GZ79EA
LT-52GZ79SA
LT-52GZ79A
LT47GZ78NASKLT42GZ78NASK
A
GND
Vcc
S
VCC IN
OUT
PS
4_2K
4_2K
SAG
6_15H
GND
CNT_C
CNT_B
CNT_D
CNT_A
VSS
VDD
C_IN
C_OUT
D_OUT
D_IN
B_OUT
B_IN
A_OUT
A_IN
SFL-1237A
6_15I
6_15H
VCC IN
B1
6_15J
:2SA1530A/QR/-X
:2SC3928A/QR/-X
:NRSA63-0R0X
PNP
NPN
0
GND
B2
-
6_15J
6_15J
LT-47GZ78B
6_15L
6_15L
6_15L
OUT
6_15L
KEY1
KEY2
LT-42GZ78B
MECA_SW
GND
LT-47GZ78SA
HP_L
HP_GND
HP_R
HP_DET
5V
POWER_LED
GND
DIMMED_LED
STB_5V
DBS_LED1
DBS_LED2
REC_LED
EE_CDS
REMOCON
6_15L
6_15G
6_15G
6_15G
6_15G
6_15H
6_15H
6_15H
6_15I
6_15I
6_15I
LT-47GZ78TA
LT-47GZ78BA
2_2K
PS
6_15K
6_15K
OPTION(NON MOUNT)
LT-42GZ78SA
SAG
GND
: OPEN
VCC
LT-47GZ78A
6_15F
6_15F
6_15F
6_15F
6_15F
6_15J
6_15J
SFL-1236A
ASSY NO. - MODEL LIST
LT-42GZ78TA
LT-42GZ78BA
LT-42GZ78A
6_15H
6_15H
IN
OUT
3.3V
5_1O3_2L
:2SA1022/BC/-X
-
2_2P
- NOTE -
PS
5_1O3_2L
SAG
2_2O
PNP2
6_15J
CARD_RIN
BS_A5V
GND
GND
BS_A5V
BS_A5V
GND
BS_A5V
BS_A5V
BS_A5V
TV_MAIN
GND
GND
GND
BS_A9V
GND
GND
GND
DTU_Cr
DTU_Cb
GND
CVBS/Y_OUT
BS_A5V
CVBS/Y_OUT
GND
BS_A9V
DIN_SL
GND
GND
GND GND
BS_A5V
BS_A9V
GNDGND
BS_A9V
DIN_R
GND
DIN_SR
BS_A5V
CARD_Cr
CARD_Cb
TEXT_G
TEXT_B
CARD_Y
GND
BS_A5V
SUB_C
SDA3A5
DIN_SL
MAIN_C
MAIN_VY
SCL3A5
TV_R
DIN_SR
CARD_LIN
GND
BS_A9V
GND
DVI/DIN
BS_A5V
GND
V2__S
CARD_VD
CARD_HD
MAIN_C
SUB_C
PC_VS
PC_HS
V1_G_Y
BS_A5V
BS_A5V
V1_B_Cb
GND
V1_S
V3_VIN
V2__CIN
V2__YIN
MAXX_RST
V3_RIN
V3_LIN
DBS_LED2
DBS_LED1
V2_RIN
KEY1
TEXT_R
BS_A5V
GNDGND
V2_VIN
EE_CDS1
MAIN_POW
MSP_RSTO
MAIN_POW
V1_CIN
AC_IN
STB_5V
STB3.3V
DBS_LED1
REMOCON
POW_LED
V2_LIN
DIN_L
V1_RIN
V1_LIN
GND
DTU_VIN
GND
DIN_R
TEXT_B
TV_L
DVI/DIN
TEXT_G
KEY2
MECA_SW
TEXT_R
BS_A9V
CARD_RIN
DIMMER
DEC_Y
A-MUTE
SCL3A5
AUDIO_R
SDA3A5
POW_LED
DTU_RIN
DTU_Cr
GND
BS_A9V
DTU_Y
REC_LED
GNDGND
SDA3A
SCL3A
CARD_Cr
TV_MAIN
EE_CDS1
CARD_VD
CARD_HD
GND
PC_VS
REC_LED
PC_HS
GND
PC_B
BS_A5V STB3.3V
CARD_Cb
GND
DIN_L
PC_G
V3__G_Y
MAIN_VY
AMP_MUTE
V3__B_Cb
MON_VOUT
V3__R_Cr
PC_R
BS_A3.3V
MECA_SW
KEY2
KEY1
GND
PC_G
PC_B
MON_YOUT
MON_Y
PC_R
V2__S
MON_C
STB_5V
MON_V
V2__CIN
GND
DTU_LIN
GND
MSP_RSTO
BS_A5V
GND
BS_A9V
AC_IN
POW_GOOD
TV_R
REMOCON
CARD_Y
DTU_Y
TV_L
AMP_MUTE
CARD_LIN
MAXX_RST
GND
SCL3A
SDA3A
HP_MUTE
CARD_CK
DTU_VIN
DTU_Cb
V1_CIN
V1_YIN
BS_A5V
V1_YIN
V1_VIN
DIMMER
V1_VIN
V1_LIN
V1_RIN
CARD_DA
V1_R_Cr
V2__YIN
DBS_LED2
V1_S
CARD_CK
V1_B_Cb
V2_VIN
BS_A9V
V1_G_Y
V2_LIN
DEC_Y
V3_RIN
V3_LIN
V3_VIN
CARD_DA
V3__R_Cr
1080P_SW
V3__B_Cb
V3__G_Y
V2_RIN
MON_Y
V1_R_Cr
MON_C
MON_V
B1_POW
MON_R
MON_L
DIN_PHOTO
A-MUTE
DIN_PHOTO
HP_MUTE
DTU_LIN
AUDIO_R
B1_POW
1080P_SW
DTU_RIN
POW_GOOD
GND
GND
GND
MAIN_R
MAIN_L
V2_S
V2_CIN
V2_YIN
V3_G_Y
V3_B_Cb
V3_R_Cr
MON_C
MON_Y
MON_V
MON_L
MON_R
V1_S
V1_CIN
V1_YIN
V1_VIN
V1_LIN
V1_RIN
V1_R_Cr
V2_VIN
V2_RIN
V2_LIN
AMP_MUTE
DIN_PHOTO
AFT1
DVI_R
DVI_L
B1_POW
CARD_CK
CARD_DA
HP_MUTE
PC_VS
PC_HS
PC_B
PC_G
PC_R
V3_RIN
V3_LIN
HP_DET
HP_R
SDA3A
A_MUTE
HP_L
POW_GOOD
AC_IN
M_MUTE
A_MUTE
SCL3A
M_MUTE
MSP_RSTO
MAXX_RST
V1_B_Cb
V1_G_Y
1080P_SW
MAIN_POW
TV_MAIN
TV_L
TV_R
SDA3A5
SCL3A5
V3_VIN
NCB21AK-225X
C293
NCB21AK-225X
C292
NCB21AK-225X
C291
R192 0
R191 0
R190 0
C287
OPEN
C286
OPEN
C285
OPEN
C284
OPEN
C283
OPEN
C282
OPEN
L102
OPEN
L103
OPEN
L104
OPEN
R294 0
R293 82
R289 82
R288 82
R210 OPEN
R209 OPEN
C220 OPEN
C219 OPEN
B1
C218 OPENB1C217 OPENB1C216 OPEN
R229
OPEN
NQL79GM-100X
L101
R232
470
Q113
NPN
CH
C185
82p
R231
33
CH
C184
150p
R194
0
/16
C262
0.1
/16
C263
0.1
C139
OPEN
/16
C134
1
R237 100
/16
C130
47
/16
C131
0.1
R168
100
R169
100
D102
OPEN
D101
OPEN
/16
C117
0.1
/16
C122
0.1
/16
C123
0.1
/16
C177
0.1
/16
C179
47
/16
C180
0.1
/16
C187
0.1
C186 OPEN
/16
C167
0.1
/16
C168
0.1
R220
100
R219
100
D104 OPEN
D103 OPEN
/16C189 10
R247 0
R246 0
R245 0
R239 100
R238 100
C175
.01
CH
/16
C174
330p
/16
C176
0.01
/16
C178
1
/16
C181
0.01
/16
C182
.01
/16
C183
.01
R242 0
/16
C172
0.1
/16
C169
0.01
/16
C170
0.01
/16
C171
0.01
CH
/50
C173
68p
R2180R2170R216
0
R213
OPEN
R212
OPEN
/16
C158
0.01
R211
OPEN
/16
C157
0.01
/16
C156
0.01
R184 220k
/16
C138
0.1
/16
C141
10
/16C133 1
/16
C142
0.1
/16
C143
0.1
R181
220k
/16
C132
1
/16
C129
0.1
/16
C128
0.1
C127
OPEN
R167
220k
/16
C126
1
R166
220k
/16
C120
1
R165 220k
/16
C119
1
R164
220k
100
99
98
97
96
95
94
93
92
91
90
89
88
87
86
85
84
83
82
81
80
79
78
77
76
75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
2524232221
2019181716151413121110987654321
R2S11003FT
Clamp_Pulse2_in
INT_VD_OUT2
INT_HD_OUT2
Sync1_GND1
Cr/Pr/R_OUT2
Sync_VCC1
Cb/Pb/B_OUT2
SUB_GND3
Y/G_OUT2
OUT_GND
Clamp_Pulse1_in
INT_VD_OUT1
INT_HD_OUT1
HD_poldet1
OUT_VCC
Cr/Pr/R_OUT1
HD_DET1
Cb/Pb/B_OUT1
Sync2_GND
Y/G_OUT1
VD_slice1
Sync_slice1
Clamp_in1
Clamp_driver1
VD_filter1
COMP_T5DC6
Cr_IN5
DC5
Cb_IN5
DC4
Y_IN5
DC3
FB_IN3
INPUT_GND
Cr/Pr/R_IN4
VREF
Cb/Pb/B_IN4
INPUT_VCC
Y/G_IN4
DC2
Cr/Pr/R_IN3
COMP/RGB_T4
FB_IN2
DC1
Cb/Pb/B_IN3
COMP/RGB_T3
Y/G_IN3
FB_DET_IN2
FB_IN1
VD_filter2
Sync_slice2
Clamp_in2
Clamp_driver2
VD_slice2
ATT_MON_OUT
Sync2_VCC
FB_OUT2
FB_OUT1
G_IN1_DET
VD_IN1
HD_IN1
MAIN_VCC2
G_IN1
CL_Cr1
B_IN1
CL_Cb1
R_IN1
CL_Y1
Y/G_IN2
COMP/RGB_T1
Cb/Pb/B_IN2
COMP/RGB_T2
Cr/Pr/R_IN2
FB_DET_IN1
SCLK
SDATANCNC
R_IN8
INPUT_GND2
B_IN8NCG_IN8NCVD_IN2
HD_IN2NCR_IN7
HD_IN_DET
B_IN7
MAIN_GND
G_IN7
CL_Cr2
Cr/R_IN6
CL_Cb2
Cb/B_IN6
CL_Y2
Y/G_IN6
SUB_GND1
IC102
100
99
98
97
96
95
94
93
92
91
90
89
88
87
86
85
84
83
82
81
80
79
78
77
76
75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
2524232221
2019181716151413121110987654321
R2S11004FT
ATT_MON_OUT
COMP_Y_IN2
S5
COMP_Y_IN1
CVBS5
C_IN5
C5_DC
Y_IN5
VREF
CVBS_IN5
INPUT_GND
C_IN4
C4_DC
Y_IN4
CVBS4
CVBS_IN4
DRIVER_GND
C_OUT3
DC_OUT
Y_OUT3
DRIVER_VCC5V
CVBS_OUT3
FBC_CVBS_OUT3
C_IN3
C3_DC
R9_IN
NC
L10_IN
R10_IN
AU_O_VCC9V
L3_OUT
R3_OUT
L2_OUT
R2_OUT
L1_OUT
R1_OUT
FBC_CVBS_OUT5
CVBS_OUT5
FBC_CVBS_OUT4
CVBS_OUT4
OUT2_GND
C_OUT2
FBC_Y_OUT2
OUT2_VCC5V
CVBS/Y_OUT2
OUT1_GND
C_OUT1
OUT1_VCC5V
CVBS/Y_OUT1
FBC_Y_OUT1
SDATA
SCLK
CVBS1
S1
CVBS_IN7S4CVBS_IN6
Y_IN1_DET
CVBS_IN1_DET
CVBS_IN1
INPUT_VCC5V
Y_IN1
C1_DC
C_IN
CVBS2
CVBS_IN2
S2
Y_IN2
C2_DC
C_IN2
CVBS3
CVBS_IN3
S3
Y_IN3
FBC_Y_OUT3
L9_IN
AU_O_GND
R8_IN
L8_IN
P_EXP4
R7_IN
L7_IN
AU_I_VCC9V
R6_IN
L6_IN
AU_1/2_VCC
R5_IN
L5_IN
P_EXP3
R4_IN
L4_IN
AU_I_GND
R3_IN
L3_IN
P_EXP2
R2_IN
L2_IN
P_EXP1
R1_IN
L1_IN
IC101
R142 33k
R161 0
R162 OPEN
R163 OPEN
R160 0
/16
C121
1
/16
C124
1
/16
C125
1
R159 0
R158 0
R156 OPEN
R145 33k
R157 33k
R150 33k
R155 OPEN
R154 OPEN
R153 OPEN
/16
C108
47
/16
C107
0.1
R147 6.8k
R146 6.8k
R144 6.8k
R143 6.8k
R141 6.8k
/16
C118
1
R140 6.8k
R171
100
R170
OPEN
R222
0
R204
0
R203 0
SGD
Q115
OPEN
SGD
Q114
OPEN
R221
OPEN
R205
OPEN
R290
OPEN
C290
OPEN
D290
OPEN
R308
5.6K
R306
OPEN
R305 OPEN
NCB31HK-104X
R304
R202
5.6K
NDC31HJ-102X
R309
NDC31HJ-102X
R303
R297
100k
R295
100k
R296
100k
/16
C202
0.1
/16C201 0.1
/16
C200
0.1
123456789
1011121314151617181920212223242526272829303132333435363738394041424344454647484950
SDA0
MAIN_VY
DEC_Y
TXET_FB
TEXT_FG
GND
GND
GND
GND
TEXT_FR
DIN_PHOTO
CARD_DA
CARD_CK
SCL3A
SDA3A
MSP_RST
EE_CDS
AFT1
MECA_SW
HP_MUTE
POW_LED
AMP_MUTE
M_MUTE
STB3.3V
STB3.3V
DBS_LED2
DBS_LED1
AGC
EXT_YS1
[EXT_YS2]
REC_LED
MAXX_RST
B1_POW
AUDIO_L
[AUDIO_R}
MAINPOW
LB_POW
1080P_SW
AC_IN
POW_GOOD
TVLINK
STB_5V
GND
GND
SCL0
BS_IR
ONTIMER
REMOCON
KEY2
KEY1
QGF0508C2-50W
CN001
R280
100k
/16
C199
0.1
R259 0
R197
0
B1
/10
C116
10
R251 0
R255 0
R112 0
R111 0
R110 0
1234567
891011121314
CD4066BNS-X
IC106
R104
100k
R103
100k
R102
100k
R101
100k
/16
C101
100
R106
10k
R105
10k
UN2213-X
Q102
UN2213-X
Q101
C166
.01
MA111-X
D105
R225
10K
R223
2.2K
Q108
NPN
NDC31HJ-102X
R302
R312 0
NDC31HJ-102X
R311
R310 OPEN
R271
OPEN
R585 OPEN
R584 OPEN
C208
OPEN
C207
OPEN
R268
OPEN
NQR0389-003X
K105
R270
OPEN
C198
OPEN
C197
OPEN
R269
OPEN
C196 OPEN
C195 OPEN
/16
C153
10
R307
5.6K
/16
C155
10
/10
C154
100
/16
C152
1
654
321
MM1510XN-X
IC105
NQR0389-003X
K106
R535
100
C194 OPEN
C533
0.1 MA8033-X
D503
R538
1k
13
12
11
10
9
8
7
6
5
4
3
2
1
V
Y
U
CV
GND
GND
GND
GND
GND
GND
GND
U_L
U_R
CN0UV
OPEN
NQR0389-003X
K107
654
321
SN74LC1G3157K-X
IC541
B1
/16C106 4.7
Q109
PNP2
/16
C278
.01
Q112
PNP2
Q111
PNP2
R267
330
R265
330
R263
330
R266
100
R207
5.6K
R264
100
R262
100
Q110
PNP2
R278 OPEN
NQR0389-003X
K108
NQR0389-003X
K104
NQR0389-003X
K103
NQR0389-003X
K102
NQR0389-003X
K101
/16
C277
.01
R261
2.7k
/16
C276
.01
R260
100
/16
C235
.01
/16
C145
10
2SK1374-X
SGD
Q106
/16
C161
.01
2SK1374-X
SGD
Q107
R206
5.6K
/16
C147
10
/10
C146
100
R224
2.2K
R183 150K
/16
C144
1
654
321
MM1510XN-X
IC103
R236
0
B1
/16
C102
2.2
R188
OPEN
MA111-X
D283
/16
C149
10
R122 0
/16
C151
10
9
8
7
6
5
4
3
2
1
QGA1217C2-09X
CN00R
R243 0
/10
C150
100
R300
0
R241
0
R208 OPEN
/16
C264
0.1
R279
0
/16
C261
0.1
/16
C234
.01
/16
C270
0.1
/16
C233
.01
MA111-X
D284
121110
987654321
RLVDHDCrCbY
GND
GND
GND
GND
GND
CNCV1
OPEN
R121 0
R228
330
432
1
GND
INT
SCL
SDA
CNCV2
OPEN
R256 OPEN
/16
C148
1
B1
/16
C103
2.2
654
321
MM1510XN-X
IC104
10
9
8
7
6
5
4
3
2
1
QGA1217C2-10X
CN00U
R252 OPEN
NDC31HJ-102X
R301
R248 OPEN
B1
/16
C204
4.7
R230 OPEN
/16C272 .1
/16C273 .1
/16C274 .1
/16C275 .1
R120 0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
QGF0508C2-40W
RYMINGND
CmpVS
CmpHS
NC
FBMIN
CLPH_Y2G
CLPH_Y1V
SUB_VY
RYMIN
BYMINGND
BYMIN
YMAIN_GND
YMIN
GND
GND
GND
GND
GND
GND
GND
GND
ML
MR
GND
DIN_DL
DIN_DR
BS_COUT
BS_YOUT
BS_ROUT
GND
GND
GND
GND
GND
BS_LOUT
CN002
B1
/16
C206
4.7
/16
C211
0.1
R277 0
VIDEO/AUDIO SELECT
AMP
AMP
AMP
AUDIO
SELECT
VIDEO SELECT
OPEN OPEN
ANALOG PWB(3/6)
ANALOG PWB
(3/6)
ANALOG PWB
(5/6)
ANALOG PWB
(5/6)
LED PWB
CN100U
SW PWB
CN100R
ANALOG PWB
(6/6)
DIGITAL PWB(7/12)
CN001
ANALOG PWB(1/6)
ANALOG PWB(5/6)
ANALOG PWB(1/6)
ANALOG PWB
(3/6,5/6)
ANALOG PWB
(3/6,5/6)
ANALOG PWB(5/6)
ANALOG PWB(5/6)
ANALOG PWB
(5/6)
ANALOG PWB
(1/6,6/6)
DIGITAL PWB
(2/12)
CN002
OPEN
A
NALOG PWB CIRCUIT DIAGRAM (2/6)
2-12(No.YA665<Rev.001>)(No.YA665<Rev.001>)2-11
ANALOG PWB ASS'Y (3/6)
SFL-1237A-H2 [LT-52GZ79, LT-52GZ79/E, LT-52GZ79/S]
SFL-1237A-H8 [LT-52GZ79/BA]
ggs10021001a_12/4_5/6_0.0
OR MA8033-X
OR MA8100/M/-X
OR 2SC1623A/5-6/-X
LT-52GZ79BA
LT-52GZ79EA
LT-52GZ79SA
LT-52GZ79A
LT47GZ78NASKLT42GZ78NASK
SFL-1237A -
LT-47GZ78BLT-42GZ78B
LT-47GZ78SA
LT-47GZ78TA
:2SA1530A/QR/-XPNP
LT-47GZ78BA
LT-42GZ78SA
:UDZS10B-X
:NRSA63J-0R0X
:OPTION(NON MOUNT)
LT-47GZ78ASFL-1236A
ASSY NO. - MODEL LIST
LT-42GZ78TA
*1
0
OPEN
- NOTE -
:2SC3928A/QR/-X
1_2F
1_2F
1_2E
1_2E
1_2F
1_2I
1_2I
1_2I
1_2I
1_2I
1_2I
1_2I
1_2I
1_2J
1_2L
1_2L
1_2L
1_2K
1_2L
1_2L
1_2C
1_2D
1_2H
1_2H
1_2H
1_2G
2_2L1_2L
1_2G
1_2F
1_2F
1_2F
PHOTO SENSOR
LT-42GZ78BA
LT-42GZ78A
1_2G
1_2H
-
1_2H
1_2H
NPN
2_2O
V1_R_Cr
GND
V1_G_Y
V1_B_Cb
GND
GND
M_MUTE
MON_R
MON_L
MON_V
MON_Y
MON_C
DVI_L
DVI_R
V2_VIN
V2_LIN
V2_RIN
V3_RIN
V3_LIN
V3_VIN
V2_CIN
V2_YIN
V2_S
V1_R_Cr
V1_B_Cb
V1_G_Y
V1_RIN
V1_LIN
V1_VIN
V1_YIN
V1_CIN
V1_S
PC_G
PC_B
PC_B
PC_G
PC_R
PC_HS
V3_R_Cr
V3_B_Cb
V3_G_Y
PC_VS
PC_R
PC_VS
PC_HS
MON_L
GND
BS_A5V
GND
GND
MON_R
GND
GND
GND
GND
GND
GND
M_MUTE
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
MON_Y
MON_V
MON_C
GND
GND
DVI_R
DVI_L
GND
GND
GND
GND
GND
GND
GND
GND
GND
V3_RIN
V3_VIN
V3_LIN
GND
GND
GND
GND
GND
DIN_PHOTO
GND
GND
GNDGND
GND
GND
GND
GND
GND
GND
V2_RIN
V2_LIN
V2_VIN
V2_YIN
GND
V2_S
V2_CIN
V3_R_Cr
GND
GND
V3_B_Cb
GNDGND
GND GND
GND
GND
GNDGND
GNDGND
V3_G_Y
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GNDGND
GND
V1_RIN
V1_YIN
GND
V1_LIN
V1_VIN
GND
GND
GND
V1_S
GND
V1_CIN
PC_VS
PC_B
PC_G
PC_R
PC_HS
V1_R_Cr
V1_B_Cb
V1_G_Y
V1_RIN
V1_LIN
V1_VIN
V1_YIN
V1_CIN
V1_S
M_MUTE
MON_R
MON_L
MON_V
MON_Y
MON_C
DVI_L
DVI_R
V2_VIN
V2_LIN
V2_RIN
V3_RIN
DIN_PHOTO
V3_LIN
V3_R_Cr
V3_B_Cb
V3_G_Y
V3_VIN
V2_CIN
V2_YIN
V2_S
/50
CH
C468
100p
/50
CH
C469
100p
S9648
D492
R476
330
D408
*1
D409
*1
D407
*1
R408
75
R407
75
R406
75
/10
CB2
C408
2.2
/10
CB2
C407
2.2
/10
CB2
C406
2.2
D466*1D465
*1
R475
330
C442
OPEN
C443
OPEN
C441
OPEN
D461*1D462
*1
C494
1000p
C440
OPEN
C439
OPEN
C438
OPEN
C437
OPEN
R461
75
R467
75
R435
75
R437
390
R442
470
UN2110-X
Q433
R464
75
R444
39k
R439
470
R443
1k
R440
390
UN2226-X
Q432
UN2226-X
Q431
R436
2.2k
2
3
1
QNN0652-001
J407
R441
22k
R438
22k
10
11
9
QNZ0726-001
J408
7
8
43
21
5
6
/16
CB1
C432
2.2
/16
CB1
C431
2.2
C436
OPEN
D432
*1
D431
*1
R434
2.2k
R433
75
/16
CB1
C433
1
1716
1514131211
109876
54321
QNZ0973-001
J410
R431
75
D463
*1
/10
CB2
C425
2.2
/10
CB2
C424
2.2
/10CB2
C466
2.2
/10CB2
C465
2.2
R427
220k
R426
220k
D428
*1
D427
*1
/10CB2
C464
2.2
CH
C461
100p
CH
C462
100p
CH
C463
100p
R420
220k
R419
220k
R418
75
CB2
/10
C417
2.2
4
5
3
QNN0651-001
J405
1
2
CB2
/10
C418
2.2
CB2
/10
C419
2.2
D421
*1
D422
*1
D420
*1
D415
*1
D416
*1
D413
*1
D412
*1
D414
*1
CB2
/10
C411
2.2
R411
75
D411
*1
CB2
/10
C409
2.2
R412
75
R414
220k
R413
220k
R410
75
CB2
/10
C413
2.2
CB2
/10
C412
2.2
4
5
3
QNN0650-001
J406
1
2
D424
*1
C435
OPEN
C410
.01
D425
*1
D423
*1
UDZS3.3B-X
D491
R423
75
R422
75
R421
75
/16
C493
100
C492
0.1/16
/16
C491
10
/10
CB2
C422
2.2
/10
CB2
C421
2.2
/10
CB2
C420
2.2
D405
*1
D406
*1
D402
*1
D403
*1
D404
*1
R402
75
D401
*1
CB2
/10
C402
2.2
R405
220k
R404
220k
R403
75
R401
75
CB2
/10
C403
2.2
/10
CB2
C405
2.2
R491
1M
/10
CB2
C404
2.2
6
QNZ0726-001
J403
5
10
11
9
7
8
43
21
QNZ0726-001
J401
10
11
9
7
8
43
21
4
5
3
1
2
QNN0650-001
J402
C434
OPEN
C401
.01
VIDEO-1
VIDEO-2
VIDEO-3
MONITOR OUT
HDMI-1
AUDIO INPUT
L/R
R
L
VIDEO
AUDIO
S-VIDEO
DVI-R
Cr
Cb
DVI-L
Y
R
L
VIDEO
AUDIO
S-VIDEO
S-VIDEO
R
L
VIDEO
AUDIO
Cr
R
L
VIDEO
AUDIO
Cb
Y
PC IN(D-SUB)
ANALOG PWB(2/6)
ANALOG PWB(2/6,5/6)
A
NALOG PWB CIRCUIT DIAGRAM (3/6)
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