LG FLATRON 568LM LM568E-CA User manual

AUTO
VOL
MUTE MENU
SET
COLOR MONITOR
SERVICE MANUAL
Website:http://biz.LGservice.com
E-mail:http://www.LGEservice.com/techsup.html
CAUTION
BEFORE SERVICING THE UNIT,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
CHASSIS NO. : CL-18
FACTORY MODEL: LM568E
MODEL: LCD 568LM (LM568E-CA)
*( ) ID LABEL MODEL No.

CONTENTS
SPECIFICATIONS
- 2 -
1. LCD CHARACTERISTICS
Type : Color TFT LCD
Size : 15.0 inch (38.1cm)
Pixel Pitch : 0.297mm x 0.297mm
Electrical Interface : LVDS Interface
Color Depth : 8-bits/ 16,194,277colors
Active Video Area : 304.1mm x 228.1mm
Surface Treatment : Anti-Glare, Hard Coating (3H)
Backlight Unit : Top/Bottom edge side 4CCFL
(Cold Cathode Fluorescent Lamp)
2. OPTICAL CHARACTERISTICS
2-1. Viewing Angle by Contrast Ratio ≥10
Left : 65° typ., 60° min.
Right : 65° typ., 60° min.
Top : 40° typ., 35° min.
Bottom : 55° typ., 50° min.
2-2. Luminance : 200(min), 250(typ)
2-3. Viewing Angle by Contrast Ratio ≥5
Left : 80° typ., 70° min.
Right : 80° typ., 70° min.
Top : 45° typ., 40° min.
Bottom : 80° typ., 70° min.
2-4. Contrast Ratio : 250(min), 300(typ)
3. SIGNAL (Refer to the Timing Chart)
3-1. Sync Signal
1) Type : Separate Sync. (Horizontal & Vertical)
2) Input Voltage Level : Low=0~0.8V, High=2.1~5.5V
3) Sync Polarity : Positive or Negative
3-2. Video Input Signal
1) Type : R, G, B Analog
2) Voltage Level : 0~0.714 V
a) Color 0, 0 : 0 Vp-p
b) Color 7, 0 : 0.467 Vp-p
c) Color 15, 0 : 0.714 Vp-p
3) Input Impedance : 75 Ω
3-3. Operating Frequency
Horizontal : 31 ~ 61kHz
Vertical : 56 ~ 75Hz
4. POWER SUPPLY
4-1. Power Adaptor
Input : AC 100~240V, 50/60Hz 1.2A
Output : DC 12V 3.0A
4-2. Power Consumption
5. ENVIRONMENT
5-1. Operating Temperature: 10°C~35°C (50°F~95°F)
(Ambient)
5-2. Relative Humidity : 5%~95%
(Non-condensing)
5-3. MTBF : 40,000(Min)
6. DIMENSIONS (with TILT/SWIVEL)
Width : 389.2mm (15.32'')
Depth : 161.8mm (6.37'')
Height : 382.4mm (15.05'')
7. WEIGHT (with TILT/SWIVEL)
Net. Weight : 4.8kg (10.58 lbs)
Gross Weight : 6.8kg (14.99 lbs)
8. Audio Spec
8-1. Audio AMP
Input : 0.700Vrms
Output : 1Wrms+1Wrms
S/N : more then 40dB
8-2. Speaker
Impedance : 4 Ω
input : Max: 1.5W, Normal: 1W
SPECIFICATIONS ................................................... 2
PRECAUTIONS ....................................................... 3
TIMING CHART ....................................................... 4
OPERATING INSTRUCTIONS ................................ 5
WIRING DIAGRAM ................................................. 6
DISASSEMBLY ....................................................... 7
BLOCK DIAGRAM ................................................. 10
DESCRIPTION OF BLOCK DIAGRAM...................11
ADJUSTMENT ...................................................... 12
TROUBLESHOOTING GUIDE .............................. 13
PRINTED CIRCUIT BOARD................................... 18
EXPLODED VIEW...................................................21
REPLACEMENT PARTS LIST ...............................23
PIN CONFIGURATION............................................27
SCHEMATIC DIAGRAM......................................... 31
PACKING AND ACCESSORIES............................ 38
MODE
POWER ON (NORMAL)
STAND-BY
SUSPEND
OFF
POWER OFF
H/V SYNC
ON/ON
OFF/ON
ON/OFF
OFF/OFF
-
POWER CONSUMPTION
less than 36 W
less than 3 W
less than 3 W
less than 3 W
less than 3 W
LED COLOR
GREEN
YELLOW
YELLOW
YELLOW
OFF
VIDEO
ACTIVE
OFF
OFF
OFF
-

- 3 -
WARNING FOR THE SAFETY-RELATED COMPONENT.
• There are some special components used in LCD
monitor that are important for safety. These parts are
marked on the schematic diagram and the
replacement parts list. It is essential that these critical
parts should be replaced with the manufacturer’s
specified parts to prevent electric shock, fire or other
hazard.
• Do not modify original design without obtaining written
permission from LG or you will void the original parts
and labor guarantee.
TAKE CARE DURING HANDLING THE LCD MODULE
WITH BACKLIGHT UNIT.
• Must mount the module using mounting holes arranged
in four corners.
• Do not press on the panel, edge of the frame strongly
or electric shock as this will result in damage to the
screen.
• Do not scratch or press on the panel with any sharp
objects, such as pencil or pen as this may result in
damage to the panel.
• Protect the module from the ESD as it may damage the
electronic circuit (C-MOS).
• Make certain that treatment person’s body are
grounded through wrist band.
• Do not leave the module in high temperature and in
areas of high humidity for a long time.
• The module not be exposed to the direct sunlight.
• Avoid contact with water as it may a short circuit within
the module.
• If the surface of panel become dirty, please wipe it off
with a softmaterial. (Cleaning with a dirty or rough cloth
may damage the panel.)
WARNING
BE CAREFUL ELECTRIC SHOCK !
• If you want to replace with the new backlight (CCFL) or
inverter circuit, must disconnect the AC adapter
because high voltage appears at inverter circuit about
650Vrms.
• Handle with care wires or connectors of the inverter
circuit. If the wires are pressed cause short and may
burn or take fire.
PRECAUTION
CAUTION
Please use only a plastic screwdriver to protect yourself
from shock hazard during service operation.

TIMING CHART
- 4 -
VIDEO
SYNC
B
D
CFE
A
H / V
H (Pixels)
V (Lines)
H (Pixels)
V (Lines)
H (Pixels)
V (Lines)
H (Pixels)
V (Lines)
H (Pixels)
V (Lines)
H (Pixels)
V (Lines)
H (Pixels)
V (Lines)
H (Pixels)
V (Lines)
H (Pixels)
V (Lines)
H (Pixels)
V (Lines)
H (Pixels)
V (Lines)
H (Pixels)
V (Lines)
H (Pixels)
V (Lines)
H (Pixels)
V (Lines)
Sync
Polarity
+
–
–
+
–
–
–
–
–
–
–
–
+
+
+
+
+
+
+
+
–
–
–
–
–
–
+
+
Dot
Clock
25.175
28.322
25.175
30.24
31.5
31.5
36.0
40.0
50.0
49.5
57.2832
65
75
78.75
Frequency
31.468 KHz
70.0 Hz
31.468 KHz
70.0 Hz
31.469 KHz
60.0 Hz
35.00 KHz
66.67 Hz
37.861 KHz
72.8 Hz
37.50 KHz
75.0 Hz
35.156 KHz
56.25 Hz
37.879 KHz
60.3 Hz
48.077 KHz
72.188 Hz
46.875 KHz
75.0 Hz
49.725 KHz
74.55 Hz
48.363 KHz
60.0 Hz
56.476 KHz
70.0 Hz
60.023 KHz
75.0 Hz
Resolution
640 x 350
720 x 400
(TEXT)
640 x 480
640 x 480
640 x 480
640 x 480
800 x 600
800 x 600
800 x 600
800 x 600
832 x 624
(MAC)
1024 x 768
1024 x 768
1024 x 768
Total
Period
( E )
800
449
900
449
800
525
864
525
832
520
840
500
1024
625
1056
628
1040
666
1056
625
1152
667
1344
806
1328
806
1312
800
Video
Active
Time ( A )
640
350
720
400
640
480
640
480
640
480
640
480
800
600
800
600
800
600
800
600
832
624
1024
768
1024
768
1204
768
Blanking
Time
( B )
160
99
180
49
160
45
224
45
192
40
200
20
224
25
256
28
240
66
256
25
320
43
320
38
304
38
288
32
Sync
Duration
( D )
96
2
108
2
96
2
64
3
40
3
64
3
72
2
128
4
120
6
80
3
64
3
136
6
136
6
96
3
Back
Porch
( F )
48
60
55
34
48
33
96
39
128
28
120
16
128
22
88
23
64
23
160
21
224
39
160
29
144
29
176
28
Front
Porch
( C )
16
37
17
13
16
10
64
3
24
9
16
1
24
1
40
1
56
37
16
1
32
1
24
3
24
3
16
1
MODE
1
2
3
4
5
6
7
8
9
10
11
12
13
14

AUTO
VOL
MUTE MENU
SET
AUTO
VOL
MUTE MENU
SET
OPERATING INSTRUCTIONS
- 5 -
FRONT VIEW REAR VIEW
Front Control Panel
24V
AUDIO
DC OUT
MIC.
IN
AUDIO
IN
MIC.
OUT
Power (DPMS) Indicator
1. Power ON/OFF Button
Use this button to turn the monitor On or Off.
2. Power Indicator
This indicator lights up green when the monitor
operates normally. If the monitor is in DPM (Energy
Saving) mode (stand-by/ suspend/power off), this
indicator color changes to yellow.
3. AUTO/SET Button
Use this button to enter a selection in the on
screen display.
* AUTO adjustment function
Touch the AUTO/SET button
before using OSD menu.
This button is for the automatic
adjustment of the screen position, clock and phase.
Note: Some signal from some graphics boards may not
function properly. If the results are unsatisfactory, adjust
your monitor’s Position, Clock and Phase manually.
4. Use these buttons to choose or adjust
items in the on screen display.
Use to adjust the brightness.
Use to adjust the volume.
5. MENU Button
Use this button to enter and from the on
screen display (OSD).
6. MUTE Button
Use this button to turn on the audio or off.
Power ON/OFF Button
Front Control Panel
DC Power Connector
D-Sub
Signal Connector
-+
PROCESSING
AUTO CONFIGURATION
Buttons
1356
24
VOL
AUTO
SET MENU
MUTE

- 6 -
WIRING DIAGRAM
J3
J4
CN5 CN4
CN2 CN3
CN1
J5
J4 J10
Connector Ass’y P/N: 6631T11012N

(a)
(a)
(a)
(a)(a)
(a)
(a)
(a)
(b)
(b)
- 7 -
DISASSEMBLY
(b)
(b)
(c)
(c)
(c)
(a)
MIC.
IN
AUDIO
IN
MIC.
OUT
(a)
1. TILT/SWIVEL & BACK COVER REMOVAL
(1) Remove two screws (a).
(2) Remove the Tilt/swivel.
(3) Remove two sheets.
(3) Remove two screws (b) from the Back Cover.
(4) Release six latchs (c).
(5) Remove the Back Cover.
2. REAR METAL ASS’Y & SPEAKER ASS’Y REMOVAL
(1) Remove eight screws (a).
(2) Remove the Rear Metal Ass’y.
(3) Remove two screws (b).
(4) Remove two Metal Fix.
(5) Remove the Speaker Ass’y
Back Cover

- 8 -
(a)
(a)
(a)
(a)
(a)
(a)
(a)
(a)
(a)
(a)
(a)
4. MAIN FRAME REMOVAL
(1) Remove seven screws (a).
(2) Remove the Main Frame.
5. LCD MODULE REMOVAL
(1) Remove four screws (a).
(2) Separate the LCD Module from the Main Frame.
LCD Module
(b)
(a) (a)
(a)
(a)
(a)
(b)
(c) (c)
(c)
(b)
(a)
J4
J3
J5
J4
J10
3. MAIN PCB ASS’Y & CONTROL PCB , SOUND ASS’Y
REMOVAL
(1) Disconnect J4,J5 and J10 from the Main PCB Ass’y.
(2) Remove six screws (a).
(3) Remove the Main PCB Ass’y.
(4) Remove three screws (b).
(5) Disconnect J4 and J3 from the Sound Ass’y
(6) Remove the Speaker PCB Ass’y.
(7) Remove three screws (c).
(8) Remove the Control PCB Ass’y.

- 9 -
(a)
(a)
CN4
CN5
CN3CN2
6. INVERTER ASS’Y REMOVAL
(1) Disconnect CN2,CN3 and CN4,CN5
(2) Remove two screws (a).
(3) Remove the Inverter Ass’y.

BLOCK DIAGRAM
- 10 -
Power Part
DC/DC
Converter
(L4973)
12V
ST5V
ST5V
EEPROM
24WC08
ADC/PLL/Scaler
(gmZAN1)
(MICOM)
(MTV212MS64I)
Switch
FDC6325L
Switch
FDC6325L
Schmitt Trigger
(74HCT14)
RGB
H.V
D-
Sub 15P
DDC
Control
DC
Jack
SCL
SDA
CON
10P Inverter
3.3 VD
3.3 V_PL
Module Power 3.3V
3.3V_PL
3.3VD
ST5V
RGB
3.3V_AD
Regulator
BA033
Regulator
BA033
Regulator
BA033
3.3 V_AD
+3.3V
Headphone
MIC In
MIC Out
Audio In
Audio
Processor
(TDA7449)
AudioAmp
(TDA7496L)
SCLSDA
78 M08 8VA
12V
12V(Audio B/d)
Audio Mute (Audio B/d)
CON 5P
12V
GND
SCL
SDA Audio
Mute
12V
Audio Mute
LCD
Interface
20Pin
Connector
(12507WR-20P)
LVDS
(LVDS83) RIN
RCLK
Regulator
BA033
Hsync2
Vsync2
Hsync2 Vsync2
Hsyncm Vsyncm
+3.3V
CON 5P
To Audio B/d
Main B/d Audio B/d

DESCRIPTION OF BLOCK DIAGRAM
- 11 -
1. Scaler One chip IC(GMZAN1, U3)
GMZAN1 (U3) is one chip IC which it supports four internal function blocks of Video Amp, PLL,
A/D converter and Video processor.
Video signal (0.7Vp.p) clamped through C44, 45, 191 with matching IC’s proper cut off voltage.
This signal is processed as a proper 8 bit digital signal by U3°Øs amplifying, phase locking, A/D converting,
and scaling operations.
U3 generates Clock, Horizontal and Vertical sync, Data Enable signals as LCD Panel’s input signals.
2. System Controller (Microprocessor) Circuit.
1) Microprocessor (U4) distinguishes polarity and frequency by calculating horizontal and vertical sync input
from signal source.
2) Microprocessor (U4) carries out power control by sending power-down trigger signal to each IC.
3) Microprocessor (U4) communicates with EEPROM (U1), and GMZAN1 (U3)
through IIC(2 lines) or 6 bit bus line. It makes all devices operated properly.
4) Microprocessor (U4) let User adjust screen by OSD function.
3. DC/ DC Converter.
This circuit supplies DC power for each device needing DC voltage of 3.3VD, 3.3V_AD, 3.3V_PL, Module Power 3.3V
and 5VS.
L4973D5.1(U13) , the DC/DC controller IC converts input 12Vdc into 5VS and 3.3Vdc with peripheral circuit
composed of Inductor (L11), condensing components (ZD5, C72), and Regulators(U2, U7, U24,U30).
MODPWR(3.3V) for LCD module power is switched by U12, switching FET, controlled by Microprocessor.
3.3VD, 3.3V_AD, and 3.3V_PL for GMZAN1 (U3) and 3.3V for LVDS (U9) are switched by U5, switching FET,
controlled by Microprocessor for Power saving.
4. Display Data Transmitter Part (LVDS).
This part transmit digital signal from the Scaler to the receiver of module.
5. Audio Part (TDA7449,TDA7496L)
In This Circuit, Audio Processor(TDA7449) Which is Controlled by Microprocessor(U4) adjust
volume/treble/bass/balance of Audio signal which come from PC.
The Signal come from TDA7449 is amplified by TDA7496L. The final output signal is output through speaker.

ADJUSTMENT
- 12 -
220
IBM
Compatible PC
PARALLEL PORT
Power inlet (required)
Power LED
ST Switch
Power Select Switch
(110V/220V)
Control Line
Not used
RS232C
PARALLEL
V-SYNC POWER
ST
VGS MONITOR
E
E
V-Sync On/Off Switch
(Switch must be ON.)
F
F
A
A
B
B
C
C
1510
5
569
1
1
1
14
13
25
6
5V
5V
5V
4.7K
4.7K
4.7K
74LS06
74LS06
OFF ON
OFF
ON
11
Video Signal
Generator
24V
AUDIO
DCOUT
MIC.
IN
AUDIO
IN
MIC.
OUT
Figure 1. Cable Connection
All adjustment are thoroughly checked and corrected
when the monitor leaves the factory, but sometimes
several minor adjustment may be required.
Adjustment should be following procedure and after
warming up for a minimum of 10 minutes.
Alignment appliances and tools.
- IBM Compatible PC
- Programmable Signal Generator.
(eg. VG-819 made by Astrodesign Co.)
- E(E)PROM with each mode data saved.
- Alignment Adapter and Software.
1. Adjustment for Factory Preset Mode
1) Run alignment program for LM568E on the IBM
compatible PC.
2) Display cross hatch pattern at Mode 1.
3) Select EEPROM ALL Init command and Enter.
4) Press "Y" key, it will automatically save all FOS data
to EEPROM.
2. Adjustment for White Balance
1) Display color 0,0 pattern at Mode 12.
2) Set External Bright to MAX position and Contrast to
MAX Position.
3) Select PRESET START →BIAS CAL command
and Enter.
4) No attempt to manually adjust, BIAS data is auto-
matically adjusted and saved to the EEPROM.
5) Display color 15,0 pattern at Mode 12.
6) Select DRIVE CAL command and Enter.
7) Color 1 (9300K) and Color 2 (6500K) are
automatically adjusted and saved to the EEPROM.
8) Select PRESET EXIT command and Enter.
3. DDC Data Write Procedure
1) Use this procedure only when there is some
probelm on EDID data.
2) Select EEPROM →EDID Write command and
Enter.
3) This will write the EDID data to EEPROM.

- 13 -
TROUBLESHOOTING GUIDE
1. NO POWER
CHECK U4.
CHECK
U4 PIN 8 VOLTAGE
(5V) ?
NO
NO POWER
(POWER INDICATOR OFF)
CHECK ADAPTER,
AND FIND OUT
A SHORT POINT
AS OPENING
EACH POWER LINE
CHECK J1’S
VOLTAGE
(12V) ?
NO
CHECK L11
(OPEN CHECK)
CHECK
U5 Voltage
(5V) ?
NO
U13’S PIN11
0V ?
CHECK U13, AND
CHECK 5VA LINE
CHECK IIC LINE
CONNECTION
(U4, U1)
CHECK U3’S VCC,
XTAL, RESET
IS U13 PIN2
VOLTAGE REPEATED
AS PULSE SHAPE ? NO
YES
YES
YES
NO YES
NO PROBLEM
NO
CHECK KEY CONTROL
CONNECTOR ROUTINE

- 14 -
2. NO RASTER (OSD IS NOT DISPLAYED) –INVERTER
CHECK MICOM INV
ON/OFF PORT.
J4 PIN5
5V? NO
NO RASTER
(OSD IS NOT DISPLAYED)
CHECK ADAPTER
J4 PIN10
12V? NO
1. CONFIRM BRIGHTNESS
OSD CONTRL STATE.
2. CHECK MICOM DIM-ADJ
PORT
J4 PIN1
5V? NO
REPLACE
INVERTER ASS’Y
CHECK
PULSE AS
CONTACTING SCOPE
PROBE TO CAUTION LABEL.
(CONTACT PROBE TO
CAUTION LABEL.
CAN YOU SEE PULSE
AT YOUR
SCOPE?
NO
REPLACE CCFL LAMP
IN THE LCD MODULE
YES
YES
YES
YES

- 15 -
1. CHECK PIN141, 142
SOLDERING CONDITION
2. CHECK X2
3. TROUBLE IN U3
U3
POWER PINS
3.3V?
NO CHECK U2, U24
U3 PIN141, 142
OSCILLATE AS 14.3M? NO
CHECK U9’S SOLDERING
CONDITION AND
CHECK CONNECTION LINE
FROM U3 TO J5
NO
TROUBLE IN CABLE
OR LCD MODULE
CHECK U12, U30
J5 PIN1
3.3V? NO
YES
YES
YES
YES
3. NO RASTER (OSD IS NOT DISPLAYED) –gmzanl
NO RASTER
(OSD IS NOT DISPLAYED)
U9
PIN31 IS 65MHz CLOCK?
PIN27 IS 48KHz H-SYNC?
PIN28 IS 60Hz V-SYNC?
IS PULSE APPEARED
AT SIGNAL PINS?

- 16 -
CHECK U2, U24
U3
POWER PIN
3.3V?
NO
1. CHECK PC
2. CHECK SIGNAL CABLE
& D-SUB CONNECTOR
LINE
CHECK
R,G,B INPUT?
U3 PIN 87, 91, 95 NO
CHECK H-SYNC LINE
(D-SUB→U6 →U3
PIN150)
CHECK
H-SYNC INPUT
U3 PIN 150?
NO
YES
YES
YES
NO RASTER
(OSD IS DISPLAYED)
4. NO RASTER (OSD IS DISPLAYED) –gmzanl

- 17 -
CHECK SPEAKER
CHECK SPEAKER
ASS’Y? NO
CHECK JACK(J7)
& AUDIO CORD
AUDIO PCB
CHECK INPUT SIGNAL
U3(TDA7449)
PIN7,8?
NO
CHECK MAIN
U3(MICOM)
→AUDIO J3
→U3(TDA7449)
CHECK
IIC LINE NO
YES
YES
YES
YES
CHECK U3(TDA7449)
CHECK
INPUT SIGNAL
U1(TDA7496L)
PIN4,9?
NO
CHECK U1(TDA7496L)
CHECK
OUTPUT SIGNAL
U1(TDA7496L)
PIN14,17?
NO
NO SOUND
5. NO SOUND
YES

PRINTED CIRCUIT BOARD
- 18 -
L3
J3
1
C15
J5
C301
C151
C152
L301
1
C150
C137
R81
C134
C129
J1
C105
C302
40
30
C112
C111
20
U30
U12
R79
10
C303
C304C305
50
10
C97
C98
U7
C96D2
20
C306
U9
MODEL:LM568E P/N :6870T392A10
C110
1
DATE :2001.08.28 D3
D4
C89
L8 L9
BA19 BA20 BA21
R14
C92
BA22 BA24
C130 C133 C136 C139 C88
D1
C90
80
70
60 50
L2
L7
BA23
D6
R2 R29
ZD2
J2
J6
R1
R54
C1
90
40
C48
D5
R28
ZD1
R53
C46
C49
100
30
20
C135
110
10
U24
C5
120
U3
5
R91
C10 C23
C213
C66 C260
C26
R36
R39 C14
130
X2
140
U4
160
150
U2
U5
R12 C28
C7
RA2 RA1
1
1
40
R98
R97
R99
C70
L11
R11
C200
U8 Q1
R15
R56
R95
R94
R96
R57
U6
C74
TP225
C72
X1
R72 C101
10
1
5
30
10
C239
R87
C237
ZD5
C99
5
R3
R4
C102
20
C240
R10
TP226
C238
R148
TP244
L13
1
C6
U1
20
U13
Q4Q3
TP243
TP246
L12
1
J10
C37
1
C38
J4
1
C236 C235
10
R86
C230
7
1. MAIN BOARD (Component Side)

- 19 -
2. MAIN BOARD (Solder Side)
R21
C106
C108
R20
R5
R17
C50
R22
R6
R18
R19
C29
C30
C31
C56
C62
C68
C69
C77
C78
C140
C141
R7
C54
C55
C63
C67
C75
C76
C80
C79
C35
C61
C84
C85
C138 C33
C45
C36
R43
R44
C43
C47
C42
C32
C73
C191
C44
R42
C60
C232
C231
C3
C18
C51
R40
R41
C34
C39
L1
C2
C16
C132
C52
C81
C82
C83
C53
C22
C13
C11
C27
C24
C91
ZD4
Q5
R34
R37C17C19
R32
Q6
1
R33 R45
R48
40
C25
R13
C93
C64R38
R16
R35
R47
C9
ZD3
Q2
10
C86
C87
R51 R61
L18
L17
C182
C183
R8
D8
R27
R52 R65
R67
R69
R78
R80
30
C8
C20
R74
R82 R120
R30
R31
R55
R90
R184
C187 R60
20
R24
R25
R23
R26
R49
R70
R73
R9
C59
C65 R64
R75
C155
R149
R147
C188
C41
C40
C58
C57
R68
L23
R183
R150
C156
8

- 20 -
3. AUDIO BOARD
5. CONTROL BOARD(Solder Side)
J4
L4
C37
1
20
L5
U1
C3
DATE:2001.09.05
MODEL:LM568E(AUDIO)
L10
P/N :6870T393S10
C15
C10
C7
D1
J2
R14
C11
C9
C4
D2
R4
C5
C6
C8
C13
R16
R18 10
C35
C2
11
U2
T1
R5
R13
J1
SOLDERING DIRECTION
C36
R15
R30 R29
R28
R27
1
U3
20
J6
C34
C1
C22
R25
L2
R19
C14
L8
C26
C28
C18
R23
R21
R22
D6D4
L6
C39
C23
10
11
C20
J3
L7
C38
R12
J7
L9
4. CONTROL BOARD(Component Side)