LG 42PM1M - - 42" Plasma Panel User manual

PLASMA MONITOR
SERVICE MANUAL
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
CHASSIS : RF-052A
MODEL : 42PM1M
42PM1M-TA
website:http://biz.LGservice.com
e-mail:http://www.LGEservice.com/techsup.html

- 2 -
CONTENTS
SAFETY PRECAUTIONS ....................................................................................3
DESCRIPTION OF CONTROLS..........................................................................4
SPECIFICATIONS................................................................................................8
ADJUSTMENT INSTRUCTIONS .......................................................................10
TROUBLE SHOOTING GUIDE..........................................................................15
PRINTED CIRCUIT BOARD ..............................................................................24
BLOCK DIAGRAM.............................................................................................26
EXPLODED VIEW..............................................................................................28
EXPLODED VIEW PARTS LIST........................................................................29
REPLACEMENT PARTS LIST...........................................................................30
SCHEMATIC DIAGRAM.........................................................................................

- 3 -
SAFETY PRECAUTIONS
Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified by in
the Schematic Diagram and Replacement Parts List.
It is essential that these special safety parts should be replaced with the same components as recommended in this manual to
prevent X-RADIATION, Shock, Fire, or other Hazards.
Do not modify the original design without permission of manufacturer.
General Guidance
An isolation 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
as this protects the technician from accidents resulting in
personal injury from electrical shocks.
It will also protect the receiver and it's components from being
damaged by accidental shorts of the circuitry that may be
inadvertently introduced during the service operation.
If any fuse (or Fusible Resistor) in this monitor is blown, replace
it with the specified.
When replacing a high wattage resistor (Oxide Metal Film
Resistor, over 1W), keep the resistor 10mm away from PCB.
Keep wires away from high voltage or high temperature parts.
Due to high vacuum and large surface area of picture tube,
extreme care should be used in handling the Picture Tube.
Do not lift the Picture tube by it's Neck.
Leakage Current Cold Check(Antenna Cold Check)
With the instrument 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.
An other abnormality exists that must be corrected before the
receiver is returned to the customer.
Leakage Current Hot Check (See below Figure)
Plug the AC cord directly into the AC outlet.
Do not use a line Isolation Transformer during this check.
Connect 1.5K/10watt resistor in parallel with a 0.15uF capacitor
between a known good earth ground (Water Pipe, Conduit, etc.)
and the exposed metallic parts.
Measure the AC voltage across the resistor using AC
voltmeter with 1000 ohms/volt or more sensitivity.
Reverse plug the AC cord into the AC outlet and repeat AC
voltage measurements for each exposed metallic part. Any
voltage measured must not exceed 0.75 volt RMS which is
corresponds to 0.5mA.
In case any measurement is out of the limits specified, there is
possibility of shock hazard and the set must be checked and
repaired before it is returned to the customer.
Leakage Current Hot Check circuit
1.5 Kohm/10W
To Instrument's
exposed
METALLIC PARTS
Good Earth Ground
such as WATER PIPE,
CONDUIT etc.
AC Volt-meter
IMPORTANT SAFETY NOTICE
0.15uF

POWERMUTE
INPUT MULTIMEDIA
ARC MENU
VOL OK
123
456
7
PSM SSM
8 9
0
VOL
SPLIT ZOOM SLEEP
REVEAL MODE
MIXSIZE
UPDATE TIME Q.VIEW
HOLD INDEX
?
i
I/II
TEXT/
LIST/
MULTIMEDIA
selects the Component, RGB or DVI
modes.
POWER
switches the set on from standby or
off to standby.
ARC
changes the picture format.
MENU
displays on screen menus one by one.
exits the current menu.
memorizes menu changes.
SSM
to select the sound appropriate to
your viewing programme character.
NUMBER buttons
SLEEP
sets the sleep timer.
I/II (option)
selects the language during dual lan-
guage broadcast.
selects the sound output.
TEXT/*(option)
These buttons are used for teletext.
For further details, see the ‘Teletext’
section.
COLOURED BUTTONS :
These buttons are used for teletext.
LIST (option)
displays the programme table.
INPUT
MUTE
switches the sound on or off.
DD/ EE
Selects a menu option.
FF/ GG(Volume Up/Down)
Increases/decreases sound level.
Adjusts menu settings.
OK
accepts your selection or displays the
current mode.
PSM
adjusts the factory preset picture
according to the room.
SPLIT ZOOM
enlarge the screen with regular
ration.
Q.VIEW (option)
Returns to the previously viewed
programme.
Note : This function works only when
Favourite prog. is set to Off .
Otherwise each press of this button
will select a stored favorite
programme.
- 4 -
DESCRIPTION OF CONTROLS

- 5 -
<Front Panel Controls>
or
ON/OFF
VOL
MENU
INPUT SELECT
ON/OFF
1. Main Power Button
2. Remote Control Sensor
3. Power Standby Indicator
Illuminates red in standby mode, Illuminates green when the
set is turned on
4. INPUT SELECT Button
5. MENU
Displays on screen menus one by one.
Exits the current menu.
Memorizes menu changes.
6. DD/ EE
Selects a menu option.
FF/ GG(Volume Up/Down)
Increases/decreases sound level.
Adjusts menu settings.
12 3 4 5 6
1
4
5
6
32

- 6 -
<Back Panel>
AC INPUT
AUDIO INPUT RGB INPUT
RGB OUTPUT
RS-232C INPUT
(CONTROL/SERVICE)
REMOTE
CONTROL
S-VIDEO
YP B P R
VIDEO
RL
VARIABLE AUDIO OUT
AUDIO
RL
EXTERNAL SPEAKER
HDMI/
DVI(VIDEO)
RL
AUDIO
RL
AUDIO
RL
AUDIO VIDEO
COMPONENT INPUT 2
COMPONENT INPUT 1
MONITOR OUPUT
A/V INPUT
(MONO) (MONO)
Connection to PC Connection to AV equipment

- 7 -
AS mark
LG TV
Owner’s Manual
1.5V
1.5V
Alkaline batteries
Power Cord
POWERMUTE
INPUT MULTIMEDIA
ARC MENU
VOL OK
123
456
7
PSM SSM
8 9
0
VOL
SPLIT ZOOM SLEEP
REVEAL MODE
MIXSIZE
UPDATE TIME Q.VIEW
HOLD INDEX
?
i
I/II
TEXT/
LIST/
Remote Control handset
-Optional extras can be changed or modified for quality improvement without any notification new optional extras can be
added.
- Contract your dealer for buying these items.
Optional Extras
Tilt wall mounting bracket
404250 40 42 50
Video cables Audio cables
Ceiling mounting bracket
40
42
50
42
40
Desktop stand
Speakers

SPECIFICATIONS
NOTE : Specifications and others are subject to change without notice for improvement .
- 8 -
VApplication Range
This spec is applied to the 42”PDP TV used RF-052A Chassis.
V Specification
Each part is tested as below without special appointment.
1) Temperature : 25±5°C (77±9°F), CST : 40±5
2) Relative Humidity: 65±10%
3) Power Voltage: Standard Input voltage (100-240V~, 50/60Hz)
* Standard Voltage of each product is marked by models.
4) Specification and performance of each parts are followed each drawing and specification by part number in accordance with BOM.
5)
The receiver must be operated for about 20 minutes prior to the adjustment .
VTest Method
1) Performance : LGE TV test method followed.
2) Demanded other specification
Safety: CE, IEC specification
EMC : CE, IEC
VGeneral Specification
1. Module Specification
Remark
Safety : IEC/EN60065, EMI : CISPR13
Model Name
42PM1M-TA
Market
Non-EU
Remark
PDP
LGE SPEC
Maker : SONY/ LGIT/ Sanken
Specification
42 inch wide Color Display Module
16:9
PDP42X2xxxx
RGB Closed Type
1) Temp : 0~40 deg
2) Humidity : 0~85%
1) Temp : -20~60 deg
2) Humidity : 0~85%
100-240V~, 50/60Hz
No
1
2
3
4
5
6
Item
Display Screen Device
Aspect Ratio
PDP Module
Operating Environment
Storage Environment
Input Voltage

2. Model Specification
- 9 -
Item
Market
Broadcasting system
Available Channel
Receiving system
Video Input (1EA)
Video Output(1EA)
S-Video Input(1EA)
Component Input(2EA)
RGB Input
RGB Output
HDMI Input(1EA)
Audio Input(5EA)
Audio Input(1EA)
Audio Output(3EA)
Audio Output(2EA)
Wired Control
No
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Specification
Non-EU
PAL B/G/I/D/K, NTSC
BAND PAL
VHF E2~E12
UHF E21~E69
CATV S1~S47
HYPER S1~S20
Upper Heterodyne
PAL, SECAM, NTSC
PAL, SECAM, NTSC
PAL, SECAM, NTSC
Y/Cb/Cr, Y/Pb/Pr
RGB-PC, RGB-DTV
RGB-PC, RGB-DTV
HDMI-PC, HDMI-DTV
PC Audio, Component(2EA),
AV(1EA), S-audio(1EA)
PC Audio
AV(1EA), External audio out(1EA),
Variable Audio out(1EA)
External audio out(1EA)
Variable Audio out(1EA)
Discrete IR
Remark
Except 42PM1MB, 50PM1MB, 42PM3MVB
Except 42PM1MB, 50PM1MB, 42PM3MVB
Except 42PM1MB, 50PM1MB, 42PM3MVB
42PM1M, 42PM1MA, 50PM1M, 50PM1MA
42PM3MV, 42PM3MVA
42PM1MB, 50PM1MB, 42PM3MVB
42PM1M, 42PM1MA, 50PM1M, 50PM1MA,
42PM3MV, 42PM3MVA

- 10 -
ADJUSTMENT INSTRUCTIONS
1. Application Object
These instructions is applied all of the 42” PDP TV, RF-052A
Chassis.
2. Specification
(1) Because this is not a hot chassis, it is not necessary to use
an isolation transformer. However, the use of isolation
transformer will help protect test instrument.
(2) Adjustment must be done in the correct order.
(3) The adjustment must be performed in the circumstance of
25±5°C of temperature and 65±10% of relative humidity if
there is no specific designation.
(4) The input voltage of the receiver must keep 100-220V,
50/60Hz.
(5) The receiver must be operated for about 15 minutes prior
to the adjustment.
OAfter RGB Full white HEAT-RUN Mode, the receiver must
be operated prior to adjustment.
OEnter into HEAT-RUN MODE
1) Press the POWER ON KEY on R/C for adjustment.
2) OSD display and screen display 100% full White pattern.
[Set is activated HEAT-RUN without signal generator in
this mode.
[Single color pattern(RED/BLUE/GREEN) of HEAT-RUN
mode uses to check PANEL.
Caution) If you turn on a still screen more than 20 minutes,
(Especially digital pattern, cross hatch pattern) after
image may be occur in the black level part of the screen.
3. Channel memory
3-1. Setting up the LGIDS
1) Install the LGIDS. (idsinst.exe)
2) After installation, restart your PC.
3) Extract [files.zip] to folder [c:\LGIDS\files].
4) Start LGIDS.
3-2. Channel memory Method
1) Select “PDP” and “Hurricane” on Model dialog. And check
your connection in Communication dialog. (If your
connection is ‘NG’, then set your PORT(COM1,2,3,...)
correctly.)
2) Connect RS-232C cable and turn on the power.
(If your connection has completed, you can see “Ready”.)
[If your set is not an end products but only a board, you
have to make your board to Stand-by state (LED_R). And
you have to Download in Stand_by power state.
3) Select proper CH_memory file(*.nvm) for each model at
[NVRAM Download] $ [Write Batch]
Next, select proper binary file(*.bin) including the CH
information for each model at [NVRAM File].
4) Click the [Download] button.
It means the completion of the CH memory download if all
items show ‘OK’ and Status is changed by ‘PASS’ at the
lower right corner of the window.
5) If you want to check whether the CH information is
memorized correctly or not, click the [Verify] button.
And then compare NVRAM File(*.bin) with the CH
information downloaded.
(Fig. 1)
(Fig. 2-1)
(Fig. 2-2)

- 11 -
4. POWER PCB Assy Voltage
Adjustments (Va, Vs Voltage Adjustments)
4-1. Test Equipment :D.M.M. 1EA
4-2.Connection Diagram for Measuring
: refer to fig.3
4-2. Adjustment Method
[P/No 3501V00221A B/D]
(1) Va Adjustment
1) After receiving 100% Full White Pattern, HEAT RUN.
2) Connect + terminal of D.M.M to Va pin of P805, connect
- terminal to GND pin of P805.
3) After turning RV601, voltage of D.M.M adjustment as
same as Va voltage which on label of panel right/top.
(Deviation; ±0.5V)
(2) Vs Adjustment
1) Connect + terminal of D.M.M to Vs pin of P805, connect
– terminal to GND pin of P805.
2) After turning RV401, voltage of D.M.M adjustment as
same as Va voltage which on label of panel right/top.
(Deviation; ±0.5V)
5. EDID (The Extended Display
Identification Data)/ DDC (Display
Data Channel) download
5-1. Required Test Equipment
1) Adjusting PC with S/W for writing EDID Data.(S/W : EDID
TESTER Ver.2.5)
2) A Jig for EDID Download
3) Cable : Serial(9Pin or USB) to D-sub 15Pin cable, D-sub
15Pin cable, DVI to HDMI cable
5-2. Setting of device
5.3. Preparation for Adjustment
1) As above Fig. 5, Connect the Set, EDID Download Jig, PC
& Cable.
2) Turn on the PC & EDID Download Jig. And Execute the
S/W : EDID TESTER Ver,2.5
3) Set up S/W option
Repeat Number : 5
Device Address : A0
PageByte : 8
4) Power on the Set
5.4. Sequence of Adjustment
(1) DDC data of Analog-RGB
1) Init the data
2) Load the EDID data.(Open File)
[Analog-RGB : MF056A_RGB.ANA]
[digital(HDMI) : MF056A_DMI.DVI]
3) Set the S/W as below.
4) Push the “Write Data & Verify”button. And confirm “Yes”.
5) If the writing is finished, you will see the “OK” message.
Each PCB assembly must be checked by check JIG set.
(Because power PCB Assembly damages to PDP Module,
especially be careful)
Va ADJ
RV601
P806
P805
P807
Va
GND
NC
VS
DMM
+ - P804
P801 P802
Vs ADJ
RV401
P803
(Fig. 3) Connection diagram of power adjustment for measuring
(Fig. 4) Connection Diagram of DDC download

- 12 -
6. Auto AV(CVBS) Color Balance
6-1. Requirement
- This AV color balance adjustment should be performed befor
white Balance Adjustment
6-2. Required Equipment
1) Remote controller for adjustment
2) AV Pattern Generator
: 802F Pattern Generator, Master(MSPG-925FA), etc
(Which has PAL Composite Video format output with
standard(1.0 Vpp) Vertical 100% Color Bar Pattern as Fig6)
6-3. Method of Auto AV(CVBS) Color Balance
1) Input the PAL Composite Video (Fig6. 100% Color Bar
Pattern) into video input.
(RCA : AV1, SCART : AV3 Input, PAL : 50Hz, NTSC : 60Hz)
2) Set the PSM to Standard mode in Picture menu.
3) Press INSTAR key on R/C for adjustment.
4) Press the G(Vol. +) key operate to set, then it becomes
automatically.
5) Auto-RGB OK means completed adjustment.
7. Adjustment of White Balance
7-1. Required Equipment
1) Remote controller for adjustment
2) Color Analyzer (CA-100 or same product)
3) Auto W/B adjustment instrument(only for Auto adjustment)
4) AV Pattern Generator
7-2. Connecting diagram of equipment for
measuring (For Auto Adjustment)
WAuto adjustment Map(RS-232C)
7-3. Adjustment of White Balance
(For Manual adjustment)
OOperate the zero-calibration of the CA-100, then stick
sensor to PDP module surface when you adjust.
OFor manual adjustment, it is also possible by the following
sequence.
1) Select white pattern of heat-run mode by pressing power
on key on remote control for adjustment then operate heat
run more than 15 minutes.
2) As below Fig.8, Supply 216Level (85 IRE) full screen
pattern to Video input.
(RCA : AV1, SCART, AV3 Input, PAL : 50Hz, NTSC: 60Hz)
3) Press the TV/AV KEY on R/C for converting input mode.
4) Set the PSM to Standard mode in Picture menu.
5) Enter the White Balance adjustment mode by pressing the
INSTART key twice(White Balance) on R/C.
(Fig. 6) Auto AV(CVBS) Color Balance Test Pattern
216 Level (85 IRE)
Type
Baud Rate
115200
Index
R Gain
G Gain
B Gain
R Offset
G Offset
B Offset
Data bit
8
Cmd1 Cmd2
j a
j b
j c
j d
j e
j f
Stop bit
1
Parity
NONE
RF-052A/B/C
Protocol
Setting
Data Min Value
00(00)
00(00)
00(00)
00(00)
00(00)
00(00)
Max Value
255(FF)
255(FF)
255(FF)
255(FF)
255(FF)
255(FF)
(Fig. 7) Connection Diagram of Auto W/B Adjustment
MSPG-2100 /
MSTG-5200
216 Level (85 IRE)
COLOR
ANALYZER
TYPE ; CA-100
CVBS
signal
input
RS-232C Serial Communication
(Fig.5) EDID DATA

- 13 -
6) Stick sensor to center of the screen and select each items
(Red/Green/Blue Gain and offset) using D / E(CH +/-) key
on R/C.
7) Adjust Only High Light with R Gain/ B Gain using F / G
(VOL+/-) key on R/C.
8) Adjust it until color coordination becomes as below.
(Initially, R/G/B gain and R/G/B offset values are fixd
Red Gain : 82, Green Gain : 80, Blue Gain : 86
Red Offset : 7D, Green Offset : 7E, Blue Offset : 80)
(High Light G Gain : 7A // Low Light R Offset : 7F, G Offset
7E, B Offset 80 is Fixed)
Bright : High Light : 80 ± 20cd
Color-Coordinate : High Light : X : 0.285 ± 0.003
Y : 0.295 ± 0.003
Color Temperature : 9,300°K ± 500°K
9) When adjustment is completed, Exit adjustment mode using
EXIT key on R/C
8. Auto Component Color Balance
[Requirement]
It is very import to use correct adjustment pattern like fig.9
VWithin the pattern, color sequence should be aligned
: W-Y-C-G-M-R-BLUE-BLACK
(If color sequence is reversed(Black -> ... > White), reverse
the pattern with REV key, when using Master pattern
generator like MSPG-925)
VIf Minimum Black Level and/or Maximum White Level is not
correct, Do select 100% Color Bar Pattern.
8-1. Required Test Equipment
1) Remote controller for adjustment
2) 802F Pattern Generator
(Which has 720p Ypbpr output & PC 1024x768 60Hz with
Standard(0.7Vpp) Vertical 100% Color Bar Pattern as Fig.9)
8-2. Method of Auto Component Co lor Balance
1) Input the Component 720p 100% Color Bar signal into
Component1 or Component2.
2) Set the PSM to Standard mode in Picture menu.
3) Press INSTART key on R/C for adjustment.
4) Press the G(Vol. +) key operate To set, then it becomes
automatically.
5) Auto-RGB OK means complete adjustment
9. Auto RGB Color Balance
[Requirement]
It is very import to use correct adjustment pattern like fig.9
VWithin the pattern, color sequence should be aligned
: W-Y-C-G-M-R-BLUE-BLACK
(If color sequence is reversed(Black -> ... > White), reverse
the pattern with REV key, when using Master pattern
generator like MSPG-925)
VIf Minimum Black Level and/or Maximum White Level is not
correct, Do select 100% Color Bar Pattern.
9-1. Required Test Equipment
1) Remote controller for adjustment
2) 802F Pattern Generator
(Which has VGA 60Hz PC Format output with standard
(0.7Vpp) Vertical 16 Gray Scale pattern as Fig.10)
9-2. Method of Auto RGB Color Balance
1) Input the PC 1024x768 60Hz 100%Color bar into RGB.
2) Set the PSM to Standard mode in Picture menu.
3) Press ADJ key on R/C for adjustment.
4) Press the G(Vol. +) key operate To set, then it becomes
automatically.
5) Auto-RGB OK means completed adjustment.
(Fig. 10) Auto RGB Color Balance Test Pattern
(Fig. 9) Auto Component Color Balance Test Pattern
(Fig. 8) Pattern for Adjjustment of White Balance
216 Level (85 IRE)

10. Default value in adjustment mode
10-1. Auto Color Balance (Component/RGB)
10-2. White Balance
- 14 -
(Fig. 12) Default Value on OSD
(Fig. 11) Default Value on OSD
Auto Color Balance(HEX)
Auto-RGB GTo Set
Source Cortez
Red Offset1 22
Green Offset1 24
Blue Offset1 23
Red Offset2 45
Green Offset2 43
Blue Offset2 37
Red Gain 014
Green Gain 031
Blue Gain 011
Reset GTo Set
White Balance(Hex)
Red Gain 82
Red Offset 80
Green Gain 86
Green Offset 7D
Blue Gain 7E
Blue Offset 80
Reset GTo Set

- 15 -
TROUBLE SHOOTING GUIDE
1. Power Board
1-1. The whole flowchart which it follows in voltage output state
Start check
Manufacture enterprise
meaning of a passage
1. Check the Power Off
condition.
Doesn't the
screen whole come
out?
Is it identical
with Power Off
condition?
Yes
Yes
No
No
No
No
No
2. Check the Interface
signal condition.
Is the Interface
signal operated?
Yes
3. Check the St-by 5V
signal circuit.
Doesn't the
low pressure output
come out?
Doesn't the
St-by 5V signal
come out?
Yes
Yes
No
4. Check the 5V Monitor
signal circuit.
Doesn't the
5V Monitor signal
come out?
Yes
7. Check the VSC Vs-ON
signal
Doesn't the
high tension output
come out?
Doesn't the
VSC signal Vs-ON
come out?
Yes
Yes
Does
high tension
output voltage Drop
occur?
When the
Y B/D Module
input connector is
removed, does output
voltage drop
occur?
When the
Y, Z B/D Module
input connector is remove,
does Power Board hightension
output voltage Drop
occur?
Yes No No
9. Check the Power
Board Output high
tension circuit
Yes
10. Check the Z B/D
Module output circuit
Yes
When the
Z B/D Module
input connector is
removed, does output
voltage Drop
occurs?
11. Check the Y B/D
Module output circuit
Yes
No
8. Check the Vs, Va
voltage output circuit.
Doesn't the
Vs, Va voltage output
come out?
Yes
No
No
5. Check the VSC RL-ON
signal.
Doesn't the
VSC signal RL-ON
come out?
Yes
6. Check the VSC low
pressure output
Doesn't the
VSC low pressure
output come out?
Yes

- 16 -
1-2. Sony Power Board Structure
1 2 3
T502: Vs Trans
T702: Va Trans
T101: St-by Trans
T103: Low Voltage Trans

- 17 -
1-3. Sanken, LGIT Power Board Structure
1 2 3
T221: Vs Trans
T271: Va Trans
T121: St-by Trans
T201: Low Voltage Trans

- 18 -
2. No Power
(1) Symptom
¯Does’t minute discharge at module.
¯Non does not come in into the front LED.
(2) Check following
Is plug in power cord? Plug in power cord.
Yes
No
Is the Line Filter and Power
Board Cable connected? Connect the Cable.
Yes
No
Is the Fuse(F101) on
Power Board normal? Replace the Fuse.
Yes
No
Is the Power Board and 7P of
VSC Board Cable connected? Connect the Cable.
Yes
No
After the cable connect is remved
to Power Board(except the CN101
connection cable), the AC voltage
marking is authorized on manual.
When ST-BY 5V is not operated,
replace Power Board.

- 19 -
3. Protect Mode
(1) Symptom
¯After once shining, it does not discharge minutely
from module
¯The Rely falls(The sound is audible “click”)
¯It is converted with the color where the front LED
is red from green.
(2) Check following
Is the Power Board
normal ? Replace Power Board.
Is output the normality Low/High
voltage except Stand-by 5V?
Yes
No No
Is the each connector
normal? Replace the connector.
Replace
Y-Board.
After connecting well each connector,
the normality it operates?
Yes
No No
Is the Ctrl Board
normal? Replace X-Board.
Is the output voltage normal after
remove P1, 2, 4, 9, 10 connector of
Ctrl-B/D?
Yes
No Yes
Is the Y-Board
normal?
Is the output voltage
normal after remove
P5, P6 connector of
Y-B/D?
Is the Fuse(FS2) on Y-B/D normal?
(In case of open is replace)
Yes
No Yes Yes
Replace
Z-Board.
Is the Z-Board
normal?
Is the output voltage
normal after remove
P1 connector of Z-
B/D?
Is the Fuse (FS1, FS2) on Z-B/D
normal? (In case of open is replace)
Yes
No Yes
Is the X- Board
normal?
Is the output voltage normal after
remove P1, 2, 3, 4, 5 connector of
X-B/D?
After remove P1, P2, P3 output voltage
normality: Replace Right X-B/D
After remove P4, P5 output voltage
normality: Replace Left X-B/D
Yes
No Yes
Is the
VSC Board normal? Is the output voltage normal after remove P1001, P1100?
After crisis COF of each board, check the normality operates.
If in case normality operates, correspondence COF Fail is
replace the module.
After remove P1001, 1100 normal
operation: Replace VSC Board
Yes
No
Is the COF of X, Y, Z
normal ?
No
Yes
Yes

- 20 -
4. No Raster
(1) Symptom
¯Does’t minute discharge at module.
¯It maintains the condition where the front LED is green.
(2) Check following
Is the Power Board
normal? Replace the Power Board.
Is output the normality Low/High
voltage except Stand-by 5V?
Yes
No No
Is the each connector
normal? Replace the connector.
Replace
Y-Board.
After connecting well each connector,
the normality it operates?
Yes
No No
Is the
Ctrl Board normal? Replace X-Board.
Is the output voltage normal after
remove P1, 2, 4, 9, 10 connector of
Ctrl-B/D?
Yes
No Yes
Is the Y-Board
normal?
Is the output voltage
normal after remove
P5, P6 connector of
Y-B/D?
Is the Fuse(FS2) normal on Y-B/D?
(In case of open is replace)
Yes
No Yes Yes
Replace
Z-Board.
Is the
Z- Board normal?
Is normal the output
voltage after remove
P1 connector of
Z-B/D?
Is the Fuse(FS1, FS2) normal on
Z-B/D? (In case of open is replace)
Yes
No Yes
Is the
X- Board normal?
Is the output voltage normal after
remove P1, 2, 3, 4, 5 connector of
X-B/D?
After remove P1, P2, P3 output voltage
normality: Replace Right X-B/D
After remove P4, P5 output voltage
normality: Replace the Left X-B/D
Yes
No Yes
Is the
VSC Board normal? Is the output voltage normal after remove P1001, P1100?
After crisis COF of each board, check the normality operates.
If in case normality operates, correspondence COF Fail is
replace the module.
After remove P1001, P1100 normal
operation: Replace the VSC Board
Yes
No
Is the COF of X, Y, Z
normal?
No
Yes
Yes