LG RZ-13LA60 Schematic
LCD TV
SERVICE MANUAL
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
CHASSIS : ML-024C
MODEL : RZ-13LA60
website:http://biz.LGservice.com
e-mail:http://www.LGEservice.com/techsup.html
Jul., 2003
Printed in KoreaP/NO : 3828VD0131W
- 2 -
CONTENTS
CONTENTS .............................................................................................. 2
PRODUCT SAFETY ..................................................................................3
DESCRIPTION OF CONTROLS .............................................................. 4
ADJUSTMENT INSTRUCTION .................................................................7
TROUBLE SHOOTING............................................................................12
BLOCK DIAGRAM...................................................................................13
PRINTED CIRCUIT BOARD....................................................................14
EXPLODED VIEW .................................................................................. 18
EXPLODED VIEW PARTS LIST..............................................................19
REPLACEMENT PARTS LIST ............................................................... 20
SVC. Sheet .................................................................................................
- 3 -
PRODUCT SAFETY
IMPORTANT SAFETY NOTICE
This manual was prepared for use only by properly trained audiovisual service
technicians. When servicing this product, under no circumstances should the
original design be modified or altered without permission from LG Electronics
Inc. All components should be replaced only with types identical to those in the
original circuit and their physical location, wiring, and lead dress must conform
to original layout upon completion of repairs. If any fuse (or Fusible Resistor) in
this TV receiver is blown, replace it only with the factory specified fuse type and
rating. When replacing a high wattage resistor (Oxide Metal Film Resistor, over
1W), keep the resistor 10mm away from PCB. Always keep wires away from
high voltage or high temperature parts.
Special components are also used to prevent shock and fire hazard.
These components are indicated by the letter “x” included in their component
designators and are required to maintain safe performance. No deviations are
allowed without prior approval by LG Electronis Inc. Service work should be
performed only after you are thoroughly familiar with these safety checks and
servicing guidelines.
Circuit diagrams may occasionally differ from the actual circuit used.
This way, implementation of the latest safety and performance improvement
changes into the set is not delayed until the new service literature is printed.
CAUTION: Do not attempt to modify this product in any way.
Never perform customized installations without manufacturer’s
approval.
Unauthorized modifications will not only void the warranty, but may
lead to property damage or user injury.
GENERAL GUIDANCE
An lsolation Transformer should always be used during the servicing
of a receiver whose chassis is not isolated from the AC power line. Use a
transformer of adequate power rating to protect against personal injury from
electrical shocks. It will also protect the receiver and its components from being
damaged by accidental shorts of the circuitry that may be inadvertently
introduced during the service operation.
Before returning the receiver to the customer, always perform an AC leakage
current check on the exposed metallic parts of the cabinet, such as antennas,
terminals, etc., to be sure the set is safe to operate
without damage of electrical shock.
LEAKAGE CURRENT COLD CHECK
(ANTENNA COLD CHECK)
With the instrument’s AC plug removed from AC source, connect an electrical
jumper across the two AC plug prongs. Place the AC switch in the on position,
connect one lead of ohm-meter to the AC plug prongs tied together, and touch
other ohm-meter lead in turn to each exposed metallic parts such as antenna
terminals, phone jacks, etc. If the exposed metallic part has a return path to the
chassis, the measured resistance should be between 1MΩ and 5.2MΩ. When
the exposed metal has no return path to the chassis the reading must be
infinite. Any other abnormality that exists must be corrected before
the receiver is returned to the customer.
ELECTROSTATICALLY SENSITIVE DEVICES
Some semiconductor (solid-state) devices can be damaged easily by static
electricity. Such components commonly are called Electrostatically Sensitive
(ES) Devices. Examples of typical ES devices are integrated circuits and some
field-effect transistors and semiconductor “chip” components. The following
techniques should be used to help reduce the incidence of component damage
caused by static electricity.
1. Immediately before handling any semiconductor component or
semiconductor-equipped assembly, drain off any electrostatic charge on the
body by touching a known earth ground. Alternatively, obtain and wear a
commercially available discharging wrist strap device, which should be
removed for potential shock reasons prior to applying power to the unit under
test.
2. After removing an electrical assembly equipped with ES devices, place the
assembly on a conductive surface such as an ESD mat, to prevent
electrostatic charge buildup or exposure of the assembly.
3. Use only a grounded-tip soldering iron to solder or unsolder ES devices.
4. Use only an anti-static solder removal device. Some solder removal devices
not classified as “anti-static” can generate electrical charges sufficient to
damage ES devices.
5. Do not use freon-propelled chemicals. These can generate electrical charge
sufficient to damage ES devices.
6. Do not remove a replacement ES device from its protective package until
immediately before you are ready to install it. (Most replacement ES devices
are packaged with leads electrically shorted together by conductive foam,
aluminum foil, or comparable conductive material.)
7. Immediately before removing the protective material from the leads of a
replacement ES device, touch the protective material to the chassis or circuit
assembly into which the device will be installed.
Caution: Be sure no power is applied to the chassis or circuit, and observe
all other safety precautions.
8. Minimize bodily motions when handling unpackaged replacement ES
devices. (Otherwise, seemingly harmless motion, such as the brushing
together of your clothing or the lifting of your foot from a carpeted floor, can
generate static electricity sufficient to damage an ES device.)
DESCRIPTION OF CONTROLS
- 4 -
POWERMUTE
TV/AV I/II
LIST
PR
PR
VOL
OK
123
456
789
SSM PSM
0
VOL
Q.VIEW MENU
SLEEP TEXT
UPDATE
TIME
SIZE MIX
HOLD
REVEAL
INDEX MODE
?
i
M
All the functions can be controlled with the remote control handset.
Some functions can also be adjusted with the buttons on the side
panel of the set.
Remote control handset
Before you use the remote control handset, please install the batteries. See the next page.
1. MUTE
switches the sound on or off.
2. TV/AV
selects TV or AV mode.
clears the menu from the screen.
switches the set on from standby.
3. LIST
displays the programme table.
4. Q.VIEW
returns to the previously viewed programme.
selects a favourite programme.
5.
DD / EE
(Programme Up/Down)
selects a programme or a menu item.
switches the set on from standby.
FF / GG
(Volume Up/Down)
adjusts the volume.
adjusts menu settings.
OK
accepts your selection or displays the current mode.
6. NUMBER BUTTONS
switches the set on from standby and selects a programme.
7. SSM (Sound Status Memory)
recalls your preferred sound setting.
8. SLEEP
sets the sleep timer.
1
9
10
11
12
13
2
3
4
5
6
7
8
- 5 -
9. POWER
switches the set on from standby or off to standby.
10. I/II
selects the language during dual language broadcast.
selects the sound output (option).
11. MENU
selects a menu.
12. PSM (Picture Status Memory)
recalls your preferred picture setting.
13. TELETEXT BUTTONS (option)
These buttons are used for teletext.
For further details, see the ‘Teletext’ section.
*
: No function
COLOURED BUTTONS
These buttons are used for teletext (only TELETEXT models) or
programme edit.
Battery installation
Note : To avoid damage from possible battery leakage, remove the
batteries if you do not plan to use the remote control handset for an
extended period of time.
POWERMUTE
TV/AV I/II
LIST
PR
PR
VOL
OK
1 2 3
4 5 6
7 8 9
SSM PSM
0
VOL
Q.VIEW MENU
SLEEP TEXT
UPDATE
TIME
SIZE MIX
HOLD
REVEAL
INDEX MODE
?
i
M
1
9
10
11
12
13
2
3
4
5
6
7
8
The remote control handset is powered by two AAA/Alkaline type batteries. To load the batteries, turn
the remote control handset over
and open the battery compartment.
Install two batteries as indicated by
the polarity symbols ( and )
marked inside the compartment.
+
-
- 6 -
1. ON/OFF (rr/I)
switches the set on from standby or off to
standby.
Note : Power line lives even when the power
is off.
2. TV/AV
selects TV or AV mode.
clears the menu from the screen.
switches the set on from standby.
3. MENU
selects a menu.
4. OK
accepts your selection or displays the current
mode.
5.
FF / GG
(Volume Up/Down)
adjusts the volume.
adjusts menu settings.
6.
DD / EE
(Programme Up/Down)
selects a programme or a menu item.
switches the set on from standby.
7. POWER/STANDBY INDICATOR (rr)
illuminates red in standby mode.
illuminates green when the set is switched on.
8. REMOTE CONTROL SENSOR
9. HEADPHONE SOCKET
Connect the headphone plug to this socket.
10. AUDIO/VIDEO IN SOCKETS (AV2)
Connect the audio/video out sockets of external equipment to these sockets.
S-VIDEO/AUDIO IN SOCKETS (SAV)
Connect the video out socket of an S-VIDEO
VCR to the S-VIDEO socket.
Connects the audio out sockets of the SVIDEO VCR to the audio sockets as in AV2.
Back panel
6
Side panel
S-VIDEO H/P
AV2
RLVIDEO AUDIO
(MONO)
109
PR
VOL
MENU
OK
ON/OFF
TV
AV
/ I
5
4
3
2
1
7
8
- 7 -
1. Application Object
This instruction is for the application to the LCD TV.
2. Notes
(1) The adjustment must be performed under the correct
sequence.
(2) The adjustment must be performed in the circumstance of
25
!5cC of temperature and 65!10% of relative humidity if
there is no specific designation.
(3) The set must be operated for 15 minutes preliminarily
before adjustment if there is no specific designation.
[ ‘Heat Run’ must be performed with the full white signal or TV
noise signal in the internal part of the set.
[ The time for ‘Heat Run’ can be changed owing to production
plan.
[ Line Test condition (TV): standard color signal 65!1dBuV
ADJUSTMENT INSTRUCTION
OPTION
Data
200PR
TEXT
I/II SV
TOP
A2 ST SYS
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
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
SCART
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
OPTION
Data
200PR
TEXT
I/II SV
TOP
A2 ST SYS
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
SCART
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
3. Option 1 data setting (200PR ~ A2 ST:1bit, SYS:2bit composition)
- 8 -
OPTION
Data
200PR
TEXT
I/II SV
TOP
A2 ST SYS
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
0
1
SCART
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
OPTION
Data
200PR
TEXT
I/II SV
TOP
A2 ST SYS
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
2
3
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
0
1
2
3
SCART
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
1
1
1
1
Loading...