Sony KP-ER43M31 User manual

SERVICE MANUAL
MODEL COMMANDER DEST. CHASSIS NO.
CHASSIS
MODEL COMMANDER DEST. CHASSIS NO.
RG-3A
PROJECTION TV
KP-ER43M31 RM-961 AUS SCC-P87A-A
KP-ER43M61 RM-961 GE SCC-P85A-A
KP-ER43M90 RM-961 HK SCC-P84A-A
KP-ER43M91 RM-961 ME SCC-P86A-A
RM-961 KP-ER53M31/ER53M61
/ER53M90/ER53M91
KP-ER53M31 RM-961 AUS SCC-P87B-A
KP-ER53M61 RM-961 GE SCC-P85B-A
KP-ER53M90 RM-961 HK SCC-P84B-A
KP-ER53M91 RM-961 ME SCC-P86B-A
KP-ER43M31/ER43M61
/ER43M90/ER43M91

– 2 –
KP-ER43M31/M61/M90/M91, ER53M31/M61/M90/M91
RM-961
CAUTION
SHORT CIRCUIT THE ANODE OF HTE PICTURE TUBE
AND THE ANODE CAP TO THE METAL CHASSIS, CRT
SHIELD, OR CARBON PAINTED ON THE CRT, AFTER
REMOVING THE ANODE.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY SHADING AND MARK
!ON THE SCHEMATIC DIAGRAMS, EXPLODED
VIEWS AND IN THE PARTS LIST ARE CRITICAL TO
SAFE OPERATION. REPLACE THESE COMPONENTS
WITH SONY PARTS WHOSE PART NUMBERS AP-
PEAR AS SHOWN IN THIS MANUAL OR IN SUPPLE-
MENTS PUBLISHED BY SONY.
SPECIFICATIONS
Design and specifications are subject to change without notice.
KP-ER53M90/KP-ER53M91
KP-ER53M61/KP-ER53M31
KP-ER43M90/KP-ER43M91
KP-ER43M61/KP-ER43M31
3 picture tubes, 3 lenses, horizontal inline system
7 inch high-brightnes monochorome tubes (6.3 raster size , with optical coupling
and liquidcooling system
High performance, large-diameter highbrid lens F1.0
53 inches 43 inches
B/G, I, D/K, M
PAL, PAL 60, SECAM, NTSC4.43, NTSC3.58
NICAM Stereo/Bilingual B/G, I;
A2 Stereo/Bilingual (German B/G
VHF : E2 to E12 / UHF : E21 to E69 / CATV : S01 to
S03, S1 to S41
UHF : B21 to B68 / CATV : S01 to S03, S1 to S41
VHF : C1 to C12, R1 to R12 / UHF : C13 to C57, R21
to R60 / CATV : S01 to S03, S1 to S41, Z1 to Z39
VHF : A2 to A13 / UHF : A14 to A79/
CATV : A-8 to A-2, A to W+4, W+6 to W+84
75-ohm external terminal
15W + 15W (10% distortion
Input: 4 Output: 1 Phono jacks; 1 Vp-p, 75 ohms
Input: 4 Output: 1 Phono jacks; 500 mVrms
Input: 2 Y: 1 Vp-p, 75 ohms,
unbalanced, sync negative
C: 0.286 Vp-p, 75 ohms
Input: 1 Phono jacks
Y: 1 Vp-p, 75 ohms, sync negative
CB/B-Y: 0.7 Vp-p, 75 ohms
CR/R-Y: 0.7 Vp-p, 75 ohms
Audio: 500 mVrms
Output: 1 Phono jack; 500 mVrms
Output: 1 Stereo minijack
110 V – 240 V (KP-ER53M91/KP-ER43M91/KP-ER53M61/KP-ER43M61
220 V – 240 V (KP-ER53M90/KP-ER43M90/KP-ER53M31/KP-ER43M31
270 W (KP-ER53M91/KP-ER43M91/KP-ER53M61/KP-ER43M61
255 W (KP-ER53M90/KP-ER43M90/KP-ER53M31/KP-ER43M31
1180 × 1427 × 623 966 × 1074 × 505
79 60
Projection system
Picture tube
Projection lenses
Screen size
Television system
Color system
Stereo/Bilingual
system
Channel coverage
B/G
I
D/K
M
8(Antenna)
Audio output (Speaker)
Number of terminal
(Video)
(Audio)
(S Video)
(Component
Video)
i(Headphones)
Power requirements
Power consumption (W)
Dimensions (w/h/d, mm)
Mass (kg)

– 3 –
KP-ER43M31/M61/M90/M91, ER53M31/M61/M90/M91
RM-961
1. SELF DIAGNOSIS FUNCTION
1-1. Diagnostic Test Indicators ................................. 5
1-2. Display of STANDBY/TIMER
Light Flash Count............................................... 6
1-3. Stopping the STANDBY/TIMER Flash ............ 6
1-4. Self-Diagnostic Screen Display ......................... 7
1-5. Handling of Self-Diagnostic
Screen Display.................................................... 7
1-6. Self-Diagnostic Circuit ...................................... 8
2. DISASSEMBLY
2-1. Rear Board Removal ......................................... 9
2-2. Main Bracket Block Removal ........................... 9
2-3. Service Position ................................................. 10
2-4. H1, H2 Boards and Resistor (Focus Pack)
Removal ............................................................. 10
2-5. Main Bracket Removal ..................................... 11
2-6. Chissis Block Removal ..................................... 11
2-7. Terminal Board Removal ................................... 12
2-8. BD, DS and D Boards Removal ........................ 12
2-9. G and G1 Board Removal .................................. 13
2-10. J1, B3, E and M1 Boards Removal.................... 13
2-11. A1 Board Removal ............................................. 14
2-12. High-Voltage Cable Installation and Removal.. 14
2-13. Mechaseal ........................................................... 14
3. SET-UP ADJUSTMENTS
3-1. Screen Voltage Adjustment
(Rough Alignment) ........................................... 15
3-2. Screen (G2) Adjustment .................................... 15
3-3. Focus Rough Adjustment .................................. 15
2-4. Deflection Yoke Tilt Adjustment ...................... 15
3-5. 2-Pole Magnet Adjustment ................................ 16
3-6. 4-Pole Magnet Adjustment ................................ 16
3-7. Green, Red and Blue Focus Adjustment
3-7-1. Green, Red and Blue Lens Focus
Adjustment .................................................... 16
3-7-2. Green, Red and Blue Electrical Focus
Adjustment .................................................... 16
4. SAFETY RELATED ADJUSTMENT
4-1. HV Hold-Down Adjustment ............................. 17
TABLE OF CONTENTS
5. ELECTRICAL ADJUSTMENTS
5-1. Adjustments with Commander
5-1-1. How to Select Each Mode ............................. 18
5-1-2. How to Enter Service Mode .......................... 19
5-1-3. Method of Cancellation
from Service Mode ........................................ 19
5-1-4. How to Adjustments ...................................... 19
5-1-5. How to Write the Data ................................... 19
5-1-6. Memory Write Confirmation Method ........... 19
5-2. Service List ......................................................... 20
5-3. Picture Quality Adjustment
5-3-1. Preparation ..................................................... 34
5-3-2. NTSC Video Input ......................................... 34
5-3-3. NTSC RF Input .............................................. 35
5-3-4. PAL Video Input ............................................ 35
5-3-5. PAL RF Input................................................. 36
5-4. Color Offset (53, 61 inch model only)
5-4-1. 50 Hz (PAL) TV Mode .................................. 36
5-4-2. 50 Hz (PAL) Video Mode ............................. 36
5-4-3. 60 Hz (NTSC) TV Mode ............................... 36
5-4-4. 60 Hz (NTSC) Video Mode........................... 36
5-5. Registration Adjustment
5-5-1. Setup for Adjustment ..................................... 37
5-5-2. Method of Main Deflection Adjustment ....... 37
5-5-3. Operation Method
for Projector Engine (PJE) Mode .................. 38
5-5-4. Method of Projector Engine Adjustment
(Sub Deflection Adjustment)......................... 39
5-5-5. Deflection Adjustment ................................... 41
5-6. Auto Convergence Setting ................................. 47
5-7. White Balance Adjustment ................................ 47
5-8. Auto Convergence Error Code List ................... 48
Section Title PageSection Title Page

–4 –
KP-ER43M31/M61/M90/M91, ER53M31/M61/M90/M91
RM-961
6. DIAGRAMS
6-1. Block Diagrams .................................................. 49
6-2. Frame Schematic Diagram ................................. 62
6-3. Circuit Boards Location ..................................... 63
6-4. Schematic Diagrams........................................... 63
6-5. Printed Wiring Boards........................................ 97
6-6. Wave Forms ....................................................... 110
6-7. IC Block Diagrams ............................................. 117
6-8. Semiconductors .................................................. 119
7. EXPLODED VIEWS
7-1. Screen and Cover Block (KP-ER43) ................ 122
7-2. Screen and Cover Block (KP-ER53) ................ 123
7-3. Cabinet and Panel Block (KP-ER43) ............... 124
7-4. Cabinet and Panel Block (KP-ER53) ............... 125
7-5. Main Bracket Block ........................................... 126
7-6. Picture Tube Block............................................. 127
8. ELECTRICAL PARTS LIST ............................ 128
Section Title Page

– 5 –
KP-ER43M31/M61/M90/M91, ER53M31/M61/M90/M91
RM-961
SECTION 1
SELF DIAGNOSIS FUNCTION
The unit in this manual contain a self-diagnostic function. If an error occurs, the STANDBY/TIMER lamp will automatically begin to
flash.
The number of times the lamp flashes translates to a probable source of the problem. A definition of the STANDBY/TIMER lamp flash
indicators is listed in the instruction manual for the user's knowledge and reference. If an error symptom cannot be reproduced, the
remote commander can be used to review the failure occurrence data stored in memory to reveal past problems and how often these
problems occur.
1-1. DIAGNOSTIC TEST INDICATORS
When an errors occurs, the STANDBY/TIMER lamp will flash a set number of times to indicate the possible cause of the problem. If
there is more than one error, the lamp will identify the first of the problem areas.
Result for all of the following diagnostic items are displayed on screen. No error has occurred if the screen displays a “0”.
002:000 or
002:001 ~ 255
003:000 or
003:001 ~ 255
004:000 or
004:001 ~ 255
005:000 or
005:001 ~ 255
006:000 or
006:001 ~ 255
007:000 or
007:001 ~ 255
101:000 or
101:001 ~ 255
No. of times
STANDBY/TIMER
lamp flashes Detected Symptoms
Diagnostic
Item
Description
•Power does not
turn on
•+B overcurrent
(OCP)
•+B overvoltage
(OVP)
•Vertical deflection
failure
•White balance
failure
(no PICTURE)
•High Voltage
failure
•Audio Protection
•Micro reset
Self-diagnostic
display/
Diagnostic result Probable Cause Location
Does not light
2 times
3 times
4 times
5 times
6 times
7 times
•Power cord is not plugged in.
•Fuse (F6001) is burned out.
(G, G1 board)
•H. OUT Q5104 is shorted.
•H. LIN Q5105 is shorted.
(D board)
•IC6002 faulty.
•10.5 V is not supplied.
(G, G1 board)
•V. OUT IC5302 faulty.
•R5340 open
•R5341 open
(D board)
•G2 is improperly adjusted.
(Note 1)
•CRT problem.
•Video OUT IC7101 (CR
board), IC7201 (CG board),
IC7301 (CB board) are faulty.
•IC8306 (J1 board) and
IC4301 (E board) are faulty.
•No connection E board to CR
board.
•IC6301 (G, G1 bard) faulty.
•Power supply fails.
•IC1101 (A1 board) faulty.
•Discharge CRT
(CR, CG, CB boards)
•Static discharge
•External noise
•Power does not come on.
•No power is supplied to the PJ.
•AC power supply is faulty.
•Power does not come on.
•Load on power line is shorted.
•Power does not come on.
•Vertical deflection pulse is
stopped.
•Vertical size is too small.
•Vertical deflection stopped.
•No raster is generated.
•CRT cathode current detection
reference pulse output is small.
•+135 V is too high.
•There is picture but speaker
does not release sound.
•Power is shut down shortly,
after this return back to normal.
•Detect Micro latch up.
Note 1 : Refer to screen (G2) adjustment in section 4-2 of this manual.

–6 –
KP-ER43M31/M61/M90/M91, ER53M31/M61/M90/M91
RM-961
1-2. DISPLAY OF STANDBY/TIMER LIGHT FLASH COUNT
1-3. STOPPING THE STANDBY/TIMER FLASH
Turn off the power switch on the TV main unit or unplug the power cord from the outlet to stop the STANDBY/TIMER lamp from
flashing.
Diagnostic Item Flash Count *
+B overcurrent 2 times
+B overvoltage 3 times
V deflection stop 4 times
White balance failure 5 times
High voltage protector 6 times
Audio Protection 7 times
* One flash count is not used for self-diagnostic.
PROGR
STANDBY/TIMER
lamp
Lamp ON
0.3 sec.
Lamp OFF
0.3 sec.
Lamp OFF
3 sec.
2 times
3 times
5 times
6 times
4 times
7 times

–7 –
KP-ER43M31/M61/M90/M91, ER53M31/M61/M90/M91
RM-961
1-4. SELF-DIAGNOSTIC SCREEN DISPLAY
For errors with symptoms such as “power sometimes shuts off”or “screen sometimes goes out”that cannot be confirmed, it is possible
to bring up past occurrences of failure for confirmation on the screen:
[ToBringUp Screen Test]
In standby mode, press buttons on the remote commander sequentially in rapid succession as shown below:
5
(DIGIT 5) (VOLUME –) (POWER)ON SCREEN
DISPLAY
( )
*
* : Note that this differs from entering the service mode (volume +)
Self-Diagnosisscreen display
SELF DIAGNOSTIC
002:000
003:000
004:000
005:001
006:002
007:000
101:000
Numeral “0”means that no fault has been detected.
Numeral “1”means a fault has been detected.
Numeral “2”means two faults have been detected.
1-5. HANDLING OF SELF-DIAGNOSTIC SCREEN DISPLAY
Since the diagnostic results displayed on the screen are not automatically cleared, always check the self-diagnostic screen
during repairs. When you have completed the repairs, clear the result display to “0”.
Unless the result display is cleared to “0”, the self-diagnostic function will not be able to detect subsequent faults after completion of
the repairs.
[Clearingthe resultdisplay]
To clear the result display to “0”, press button on the remote commander sequentially as shown below when the diagnostic screen is
being displayed.
[QuittingSelf-diagnosticscreen]
To quit the entire self-diagnostic screen, turn off the power switch on the remote commander or the main unit.
Press “8”button
(It will indicate “CLEAR”on the screen.) Press “-”button
(The “CLEAR”display change to red color.)
,

–8 –
KP-ER43M31/M61/M90/M91, ER53M31/M61/M90/M91
RM-961
1-6. SELF-DIAGNOSTIC CIRCUIT
IC4301
Y/C JUNGLE
CXA2100Q CXP750096
25 IKINFrom CRT (IK)
From G,G1 board
From Q1203
(A1 board)
To H1 board
20 XRAYFrom IC5201
(D board)
16 V PROTFrom D5303/D5704
(D board)
IC002
SYSTEM IC004
MEMORY
IC006
MEMORY
3 OCP
OCP
6 OVP
OVP
LED1 54
APROT
57
H
V
SDA 61 48 SDA0 SDA1 SDA47 5
SDA5
M1 boardE board
+B overcurrent (OCP) Occurs when an overcurrent on the +B (135 V) line is detected by Q6303.
If Q6303 go to ON, the voltage to pin 3 of IC002 go to UP. The unit will
automatically turn off.
+B overvoltage (OVP) Occurs when an overvoltage on the +B (135 V) line is detected by D6318.
If D6318 go to ON, then voltage to pin 6 of IC002 go to UP. The unit will
automatically turn off.
Vertical deflection failure Occurs when an absence of the vertical deflection pulse is detected by
Q5302, Q5303, and D5303. Shut down the power supply.
White balance failure If the RGB levels do not balance or become low level within 5 seconds. This
error will be detected by IC4301.
TV will stay on, but there will be no picture.
High voltage protector of Horizontal Deflection Occurs when an overvoltage of horizontal pulse is detected by D5115 and
IC5201.
If the voltage of pin 1 of IC5201 goes to High, the voltage to pin 20 of IC4301
go to UP. The unit will automatically turn off.
Audio Protector If the Audio out lines become DC.This error will be detected by Q1202,
Q1204 and Q1203.
The unit will automatically turn off.

– 9 –
KP-ER43M31/M61/M90/M91, ER53M31/M61/M90/M91
RM-961
SECTION 2
DISASSEMBLY
2-1. REAR BOARD REMOVAL
(1) KP-ER43 (2) KP-ER53
2-2. MAIN BRACKET BLOCK REMOVAL
(1) KP-ER43 (2) KP-ER53
2Rear board
3Purse lock
1Thirteen screws
(BVTP4 X16)
1Thirteen screws
(BVTP4 X16)
2Rear board
3Purse lock
3Main bracket block
1Light shield block
2Two screws
(Hexagon head)
2Two screws
(Hexagon head)
1Light shield block
3Main bracket block

–10 –
KP-ER43M31/M61/M90/M91, ER53M31/M61/M90/M91
RM-961
2-4. H1, H2 BOARDS AND RESISTOR (FOCUS PACK) REMOVAL
2-3. SERVICE POSITION
(1) KP-ER43 (2) KP-ER53
Main bracket block Main bracket block
(1) KP-ER43 (2) KP-ER53
2Grille cover
1Four screws
(Hexagon head)
3Speaker grille
4Bracket (H)
5H2 board
6H1 board
7Screw (BVTP4 X16)
8Resistor
(Focus pack)
1Three screws
(BVTP4 X16)
6Bracket (H)
7H2 board
5Speaker grille 8H1 board
9Screw (BVTP4 X16)
2Two screws
(Hexagon head)
3Four screws
(Hexagon head)
1Three screws
(BVTP4 X16)
2Two screws
(Hexagon head)
4Grille cover
q;Resister
(Focus pack)

–11 –
KP-ER43M31/M61/M90/M91, ER53M31/M61/M90/M91
RM-961
2-5. MAIN BRACKET REMOVAL
1Two screws
(Hexagon head)
3Set the main bracket.
2Pull the main braket, and remove each connectors on main bracket.
2-6. CHASSIS BLOCK REMOVAL
Pay particular attention to the wires of each printed circuit boards when puling out the main bracket.
1Four screws
(Hexagon head)
1Two screws
(Hexagon head)
2Pull out the chassis block.
Pull out the chassis block by gripping the handles as shown in the diagram.
At this time, pay particular attention to the components removed in (1).

–12 –
KP-ER43M31/M61/M90/M91, ER53M31/M61/M90/M91
RM-961
2-7. TERMINAL BOARD REMOVAL
2-8. BD, DS AND D BOARDS REMOVAL
3RF cable
4Terminal board
2Two screws
( + BVTP 4 X 16)
1Five screws
( + BVTP 3 X 12)
1Screw
( +BVTP 3X12)
2BD holder
3claw
6Screw
( +BVTP 3X12)
8D board
5DS board 4BD board
6Screw
( +BVTP 3X12)
7Three claws

–13 –
KP-ER43M31/M61/M90/M91, ER53M31/M61/M90/M91
RM-961
2-9. G AND G1 BOARD REMOVAL
2-10. J1, B3, E AND M1 BOARDS REMOVAL
1Four claws
2G board
(KP-ER43M30/ER43M91,
KP-ER53M30/ER53M91)
G1 board
(KP-ER43M61/ER43M90,
KP-ER53M61/ER53M90)
6E board
5claw
4M1 board
3claw
9claw
0B3 board
7Four serews
( + BVTP 3 X 12)
8Shield case
2J1 board
1claw

–14 –
KP-ER43M31/M61/M90/M91, ER53M31/M61/M90/M91
RM-961
2-11. A1 BOARD REMOVAL
2-12. HIGH-VOLTAGE CABLE
INSTALLATION AND REMOVAL
(1) Remover
3A1 board
1Screw
( +BVTP3 X12)
2Two claws
2-13. MECHASEAL
1Rubber cap
2HV cable turn 90°
(2) Installation
2Rubber cap
1HV cable
Hook
Gutter
1Four screws
( +BVTP4 X16)
6Four screws
( +BVTP4 X16)
2Lens
7Picture tube
5Deflection yoke
4Neck assembly
3CR board
Removing the arrow-marked screw is strictly inhibited.
If removed, it may cause liquid spill.

– 15 –
KP-ER43M31/M61/M90/M91, ER53M31/M61/M90/M91
RM-961
SECTION 3
SET-UP ADJUSTMENTS
3-1. SCREEN VOLTAGE ADJUSTMENT
(ROUGH ALIGNMENT)
1. Receive the Monoscope signal.
2. Set 50% BRIGHTNESS and minimum PICTURE.
3. Turn the red VR on the focus pack all the way to the left and
then gradually turn it to the right until the point where you
can see the retrace line.
4. Next gradually turn it to the left to the position where the
retrace line disappears.
Fig. 3-1
3-2. SCREEN (G2) ADJUSTMENT
1. Turn on the power of the set.
2. Select VIDEO1 mode without signals.
3. Supply DC 175 ±0.5 V from external power supply to
TP7103 (KR), TP7203 (KG) or TP7303 (KB) of CR board,
CG board and CB board.
3. Adjust red, green and blue screen voltage to until retrace
line disappears with screen VR on the focus pack.
3-4. DEFLECTION YOKE TILT ADJUSTMENT
1. Receive the Monoscope signal.
2. Place the caps on the red and blue lens so that only the green
color.
3. Loosen the deflection yoke setscrew and align the tilt of the
Deflection yoke so that the bars at the center of the
monoscope pattern are horizontal.
4. After aligning the deflection yoke, fasten it securely to the
funnel-shaped portion (neck) of the CRT.
5. The tilt of the deflection yoke for red and blue is aligned the
same as was done for green.
Fig. 3-5
Neck Assy
Make sure deflection yoke is
touching CRT closely.
2-pole magnet 4-pole magnet
Deflection yoke
Anode cap
RG
SCREEN
B
RG
FOCUS
Focus Pack
B
Fig. 3-4
Lens
Fig. 3-3
Fig. 3-2
Test signal
Minimize both A and B.
A
B
Scanning line visible.
3-3. FOCUS ROUGH ADJUSTMENT
1. Loose the lens screw.
2. Set in the service mode. (Refer to SECTION 5.)
3. Place the caps on the red and blue lens so that only the green
color is shown.
4. Press “1” or “4” button on the commander and select
“PJE”, press “6” three times on the Commander to display
the test signal (crosshatch) on the screen.
5. Rotate the green lens and align to obtain the best lens focus
at the center area.
6. Rotate the green focus VR on the focus pack and align to
obtain the best electrical focus in the top right corner.
7. Perform the same alignment for red and blue lenses and elec-
tric focus.
8. Fix lens screw.

–16 –
KP-ER43M31/M61/M90/M91, ER53M31/M61/M90/M91
RM-961
3-5. 2-POLE MAGNET ADJUSTMENT
1. Receive the Dot signal.
2. Place the caps on the red and blue lens so that only the green
color is shown.
3. Turn the green focus VR on the focus pack to the right and
set to over focus to enlarge the spot.
4. Now align the 2-Pole Magnet so that the enlarged spot is in
the center of the just focus spot.
(center of the dot doesn't move)
5. Align the green focus VR and set for just (precise) focus.
6. Perform the same alignment for red and blue.
Fig. 3-6
3-6. 4-POLE MAGNET ADJUSTMENT
1. Receive the Dot signal.
2. Place the caps on the red and blue lens so that only the green
color is shown.
3. Turn the green focus VR on the focus pack to the left and set
to under focus to enlarge the spot.
4. Now align the 4-Pole Magnet so that the enlarged spot be-
comes a perfect circle.
5. Perform the same alignment for red and blue.
Fig. 3-7
3-7. GREEN, RED AND BLUE FOCUS
ADJUSTMENT
3-7-1. Green, Red and Blue Lens Focus Adjustment
1. Receive the Monoscope signal.
2. Place the caps on the red and blue lens so that only the green
color is shown.
3. Rotate the green lens and adjust to obtain the best lens focus
at the center area.
4. Fix lens screw.
5. Repeat above process for red and blue.
3-7-2. Green, Red and Blue Electrical Focus
Adjustment
1. Receive the Monoscope signal.
2. Place the caps on the red and blue lens so that only the green
color is shown.
3. Rotate the green focus VR on the focus pack and adjust to
obtain the best electrical focus in the adjust point.
4. Repeat above process for red and blue.
5. Repeat adjustment items 3-3. FOCUS ROUGH ADJUST-
MENT, 3-5. 2-POLE MAGNET ADJUSTMENT, 3-6. 4-
POLE MAGNET ADJUSTMENT and 3-7. GREEN, RED
AND BLUE FOCUS ADJUSTMENT, and adjust to obtain
the best focus.
Fig. 3-8
Adjust Point
Use the center dot
Use the center dot OKNG NG
Adjust Point of Green and Red
Adjust Point of Blue
Fig. 3-9

– 17 –
KP-ER43M31/M61/M90/M91, ER53M31/M61/M90/M91
RM-961
SECTION 4
SAFETY RELATED ADJUSTMENT
When replacing the following components marked with ]on
the schematic diagram, always check hold-down voltage and
if necessary re-adjust.
4-1. HV HOLD-DOWN ADJUSTMENT
1. Connect HV static voltmeter to HV Block.
2. Mount a resistor (R9901 : 43 k , 1/4 W, METAL
FILM) at CN5003.
3. Remove CN5002 and connect External Power Supply to
CN5002 1pin (+135 V) and 2pin (GND).
4. Turn on the set.
Part Replaced (])
D Board C5117, C5123, C5127, C5143, D5115,
D5204, Q5104, R5136, R5138, R5140,
R9901, T5102, T5104, T5103 (FBT)
G Board C6024, C6032, D6020
Part Replaced ([)
R9901
5. Receive the Dot signal and set PICTURE/BRIGHTNESS
to minimum.
6. Slowly up the supply voltage from 0 V to 135 V until
hold-down circuit works (picture disappear).
7. Read the HV static voltmeter of peak HV voltage.
Spec : 33.7 ~ 35.3 kV
8. If Hold-down voltage is less than 33.7 kV then replace
R9901 of 43 k with that of 39 k , and check if the
voltage is within the spec.
9. If hold-down voltage is over than 35.3 kV then replace
R9901 of 43 k with that of 47 k , and check if the volt-
age is within the spec.
+
–
1CN5002
Power
Supply 2
D BOARD –CONDUCTOR SIDE –
CN5002
CN5003
CN5003
R9901
Fig. 4-1
Fig. 4-2
Fig. 4-3
Fig. 4-4
Remove the cap off
from the unused
terminal and connect a
HV static voltmeter
there.

– 18 –
KP-ER43M31/M61/M90/M91, ER53M31/M61/M90/M91
RM-961
SECTION 5
ELECTRICAL ADJUSTMENTS
5-1. ADJUSTMENTS WITH COMMANDER
Service adjustment to this model can performed with the sup-
plied remote commander RM-961
5-1-1.How to Select Each Mode
The adjustment requires the following modes:
50 Hz 60 Hz WIDE 60 Hz
(PAL) (NTSC) (NTSC)
DRC1250 aaa
DRC100 aa X
PIP aaa
TWIN aa X
INDEX aa X
1. Selection of Mode Between 50 Hz and 60 Hz
50 Hz : Enter the PAL signal.
60 Hz : Enter the NTSC signal.
WIDE 60 Hz : Enter the NTSC signal with video input
2. Selection of DRC Mode
1) Press “DRC-MF (blue)” button on the commander, repeat-
edly until displays the mode that you want to select on the
screen.
Note : The DRC-MF mode is not selectable when using the
“PROGRAM INDEX” or “FAVORITE CH” feature, or
when the “GAME MODE”, “PIP”, or “TWIN” mode is
turned “ON”.
3. Selection of WIDE mode
The WIDE mode is selected only when the DRC1250 of NTSC
signal with video input mode is active.
1) Enter the NTSC signal with video input.
2) Press “DRC-MF (blue)” button on the commander to select
“DRC1250”.
3) Press “MENU” button on the commander and move “ ”
up or down to enter the “FEATURE” b“WIDE MODE”.
4) Move “ ” up or down to select “ON” or “OFF”, and push
“(ENTER)” button.
5) Press “MENU” button to return to normal screen.
4. Selection of PIP mode
1) Open the remote control cover, press “ (PIP)” button on
the commander.
2) Press “ (PIP)” button again to return to normal screen.
5. Selection of TWIN mode
1) Press “ (TWIN)” button on the commander.
2) Press “ (TWIN)” button again to return to normal screen.
6. Selection of INDEX mode
1) Press “PROGR INDEX” button on the commander.
2) Press “PROGR INDEX” button again to return to normal
screen.
z
.>N
xX
ON SCREEN
DISPLAY
Adjustment item
up
Adjustment item
down
JOYSTICK
Copy data to all
mode
Read data from
NVM
Write data to NVM
Copy PAL data
to NTSC
TV STANDBY
MUTE
VOLUME +
DRC-MF (blue)
MENU
Data up
Up : Category up
Down : Category down
Push : Enter
Data down
TWIN
User control goes
to the standard state Initialize data
(Not stored)
RM-961
(open the cover)
PROGR
INDEX
PIP
SWAP
Change
the PICTUER MODE

–19 –
KP-ER43M31/M61/M90/M91, ER53M31/M61/M90/M91
RM-961
5-1-2. How to Enter Service Mode
1. Turn on the main power switch to place this set in standby
mode. (LED will light in red.)
2. Press the buttons on the commander as follows, and enter
service mode.
5-1-3. Method of Cancellation from Service Mode
1. Set the standby mode (Press “(TV STANDBY)”button
on the commander), then press “(TV STANDBY)”but-
ton again, hereupon it becomes TV mode.
5-1-4. How to Adjustments
1. Set in the service mode, the following screen will appear.
Enter the
“Service mode”
5
(DIGIT 5) (VOLUME +)ON SCREEN
DISPLAY
( )
TV
STANDBY
( )
5-1-5.How to Write the Data
1. Set in the service mode.
2. Press “1”or “4”button on the commander, select the ad-
justment item, and press “3”or “6”button to change the
data.
3. Press “(MUTE)”button on the commander and it will
indicate “WRITE”on the screen.
4. Press “-”button on the commander to write into memory.
(The “WRITE”display will be changed to red color while
executing, and back to “SERVICE”.)
Commander Function (Except PJE mode)
Button Mode Description
+ -WRITE Writes data to NVM.
7+ -READ Reads data from NVM.
8+ -NORMAL All user control goes to the standard.
5+ -INITIAL Service data initialization. Not stored.
(Be sure not to use usually)
2+ -COPY Copies and writes data of DRC1250
(50Hz) mode to all other modes.
+ -WRT5060 Copies data of 50 Hz (PAL) mode to
60 Hz (NTSC) mode.
Note : Before changing to other modes, press “(MUTE)”+
“-”buttons on the commander to write the data.
(Omission of this operation causes the data to be returned
to the data before adjustment.)
: Confirm the adjustment mode before writing data for data
values because to vary in each adjustment mode.
: The adjustment item that there are no relations in the ad-
justment is not to change data values because all items are
written in each adjustment mode.
5-1-6.Memory Write Confirmation Method
1. After adjustment, pull put the plug from AC outlet, and then
plug into AC outlet again.
2. Turn the power switch ON and set in service mode.
3. Call the adjustment items again to confirm adjustments were
made.
2. Press “1”or “4”button on the commander to select the
adjustment item.
3. Press “3”or “6”button on the commander to change the
adjustment data.
4. Move “”up or down to select the adjustment category.
When move “”up (category up), service mode changes in
the order as shown below.
GEO 00 VSZ 2B SERVICE 50
0 025Q 1.4M 00 FF 0001
Category Name Item Name Mode
Item No.
Suffix No. Total Power On time
(Hours)
Software
Version
Data 50 : PAL, SECAM
60 : NTSC
GEO
DAC
WHB
SAJ
JGL
YCT
SYC
AP
MSP
3CM
MID
LTI OPB
*: When it moves from PJE to other categrys,
repeat 1or 4button and press it.
OPM
PJE*
TXT
DSP
2CM

–20 –
KP-ER43M31/M61/M90/M91, ER53M31/M61/M90/M91
RM-961
5-2. SERVICE LIST
Note
•Common : The data value of each mode commonness. Others are set up by each mode.
•: Shaded items are fixed data.
•: Though data value is indicated on the screen, it is not used.
•Standard data listed on the Adjustment Item Table are reference values, therefore it may be different for each model and for each
mode.
•Note for Different Data :
Those are the standard data values written on the microprocessor. Therefore, the data values of the modes and stored respectively
in the memory.
In case of a device replacement, adjustment by rewriting the data value is necessary for some items.
OPTION NOTE
Category : OPM
Item : COM Comb Operation Selection 00 = automatic operation (depends on color system status)
01 = no comb operation
02 = forced 2D-comb operation
03 = forced 3D-comb operation
Item : TSY TV System Selection for Auto TV System 00 = B/G, 01 = I, 10 = D/K, 11 = M
Item : SSO Speed CH Search Selection 00 = normal, 01 = 4 times, 10 = 6 times, 11 = 8 times
Item : TRP MPEG/JPEG Noise Reduction
Bit bit7 bit6 bit5 bit4 bit3 bit2 bit1 bit0
Input ––TV Video 1 Video 2 Video 3 Video 4 DVD
Category : OPB
OP1 bit7 bit6 bit5 bit4 bit3 bit2 bit1 bit0
Item TOP NICAM HDEV (reserved) –DVD Input AV Input
Data 11100111
AV Input 00 = no AV Input 01 = 1 AV Input
10 = 3 AV Input 11 = 4 AV Input
OP2 bit7 bit6 bit5 bit4 bit3 bit2 bit1 bit0
Item C-Text Korean Korean A-TVsys US ST SSV OSD Language
Stereo Mode Mode
Data 00010011
C-Text Text Decoder Selection 0 = original, 1 = chinese
Korean Stereo* Korean Stereo 0 = disabled, 1 = enabled
Video NTSC 3.58* Video Color System 0 = Multi System, 1 = Single System
A-TVsys Auto TV System in Auto Program 0 = disabled, 1 = enabled
US ST* USA Stereo 0 = disabled, 1 = enabled
SSV Model SSV-production Model 0 = original, 1 = disable PIP/TWIN/Digital
OSD Language 00 = English only, 01 = English & Chinese,
10 = English & Arabic/Korean* 11 = English, Chinese & Arabic/Korean*
* : APPLICABLE FOR NTSC MODELS ONLY