UHF: C13 to C57, R21 to R60
CATV: S01 to S03, S1 to S41, Z1 to Z39
MVHF: A2 to A13
UHF: A14 to A79
CATV: A-8 to A-2, A to W+4, W+6 to W+84
˘(Antenna)75-ohm external terminal
Audio output (Speaker)8W + 8W
Number of terminal
DVideoInput: 4*Output: 1Phono jacks; 1 Vp-p, 75 ohms* Three input lines available
≥ AudioInput: 4*Output: 1Phono jacks; 500 mVrms* Three input lines available
(S Video)Input : 2Y: 1 Vp-p, 75 ohms,
(ComponentInput : 1Phono jacks:
Video)Y: 1 Vp-p, 75 ohms,
2 (Headphone)Output: 1Stereo minijack
Picture tube25 in.
Tube size (cm)64Measured diagonally
Screen size (cm)60Measured diagonally
Dimension (w/h/d,mm)650 × 517 × 496
Mass (kg)39
SPECIFICATIONS
(KV-AR25M60)
unbalanced, sync negative
C: 0.286 Vp-p, 75 ohms
sync negative
B: 0.7 Vp-p, 75 ohms
C
CR: 0.7 Vp-p, 75 ohms
Audio: 500mVrms
Note
CAUTION
SHORT CIRCUIT THE ANODE OF THE PICTURE TUBE AND
THE ANODE CAP TO THE METAL CHASSIS, CRT SHIELD, OR
CARBON PAINTED ON THE CRT, AFTER REMOVING THE
ANODE.
Design and specifications are subject to change without notice.
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 APPEAR AS SHOWN IN THIS MANUAL OR IN
SUPPLEMENTS PUBLISHED BY SONY.
– 2 –
KV-AR25M66/AR25M60/AR25M80
RM-993RM-995
SPECIFICATIONS
(KV-AR25N90)
Note
Power requirements110 V AC, 60 Hz
Power consumption (W)Indicated on the rear of the TV
Television systemM
Color systemNTSC3.58, PAL*, PAL 60*, SECAM*, NTSC4.43**AV IN only
Stereo/Bilingual system MTS
Channel coverage
VHF: 2 to 13
UHF: 14 to 69
CATV: 1 to 125
˘(Antenna)75-ohm external terminal
Audio output (Speaker)8W + 8W
Number of terminal
DVideoInput: 4*Output: 1Phono jacks; 1 Vp-p, 75 ohms* Three input lines available
≥ AudioInput: 4*Output: 1Phono jacks; 500 mVrms* Three input lines available
(S Video)Input : 2Y: 1 Vp-p, 75 ohms,
unbalanced, sync negative
C: 0.286 Vp-p, 75 ohms
ComponentInput : 1Phono jacks:
Video (DVD) INY: 1 Vp-p, 75 ohms,
2 (Headphone)Output: 1Stereo minijack
Picture tube25 in.
Tube size (mm)639Measured diagonally
Screen size (mm)598Measured diagonally
Dimension (w/h/d,mm)650 × 517 × 496
Mass (kg)39
sync negative
B: 0.7 Vp-p, 75 ohms
C
R: 0.7 Vp-p, 75 ohms
C
Audio: 500mVrms
KV-AR25N90
RM-996
CAUTION
SHORT CIRCUIT THE ANODE OF THE PICTURE TUBE AND
THE ANODE CAP TO THE METAL CHASSIS, CRT SHIELD, OR
CARBON PAINTED ON THE CRT, AFTER REMOVING THE
ANODE.
Design and specifications are subject to change without notice.
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 APPEAR AS SHOWN IN THIS MANUAL OR IN
SUPPLEMENTS PUBLISHED BY SONY.
– 3 –
KV-AR25M66/AR25M60/AR25M80
RM-993RM-995
KV-AR25N90
RM-996
Power requirements110-240 V AC, 50/60 Hz
Power consumption (W)Indicated on the rear of the TV
Television systemB/G, I, D/K, M
Color systemPAL, PAL 60, SECAM, NTSC3.58, NTSC4.43
Stereo/Bilingual system NICAM Stereo / Bilingual B/G, I; A2 Stereo / Bilingual B/GKV-AR25M66 only
Teletext languageEnglish, Arabic, FrenchKV-AR25M66 only
English, Farsi (Persian), FrenchExcept KV-AR25M66
Channel coverage
B/GVHF: E2 to E12
UHF: E21 to E69
CATV: S01 to S03, S1 to S41
IUHF: B21 to B68
CATV: S01 to S03, S1 to S41
D/KVHF: C1 to C12, R1 to R12
UHF: C13 to C57, R21 to R60
CATV: S01 to S03, S1 to S41, Z1 to Z39
MVHF: A2 to A13
UHF: A14 to A79
CATV: A-8 to A-2, A to W+4, W+6 to W+84
˘(Antenna)75-ohm external terminal
Audio output (Speaker)8W + 8W
Number of terminal
DVideoInput: 4*Output: 1Phono jacks; 1 Vp-p, 75 ohms * Three input lines available
≥ AudioInput: 4*Output: 1Phono jacks; 500 mVrms* Three input lines available
(S Video)Input : 2Y: 1 Vp-p, 75 ohms,
(ComponentInput : 1Phono jacks:
Video)Y: 1 Vp-p, 75 ohms,
2 (Headphone)Output: 1Stereo minijack
Picture tube25 in.
Tube size (cm)64Measured diagonally
Screen size (cm)60Measured diagonally
Dimension (w/h/d,mm)650 × 517 × 496
Mass (kg)39
SPECIFICATIONS
(KV-AR25M66/M80(ME)/M80(E))
unbalanced, sync negative
C: 0.286 Vp-p, 75 ohms
sync negative
B: 0.7 Vp-p, 75 ohms
C
R: 0.7 Vp-p, 75 ohms
C
Audio: 500mVrms
Note
CAUTION
SHORT CIRCUIT THE ANODE OF THE PICTURE TUBE AND
THE ANODE CAP TO THE METAL CHASSIS, CRT SHIELD, OR
CARBON PAINTED ON THE CRT, AFTER REMOVING THE
ANODE.
Design and specifications are subject to change without notice.
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 APPEAR AS SHOWN IN THIS MANUAL OR IN
SUPPLEMENTS PUBLISHED BY SONY.
The units 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.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 occured if the screen displays a “0”.
Diagnostic
Item
Description
• Power does not
turn on
• +B overcurrent
(OCP) or
overvoltage
(OVP)
• Vertical deflection
stopped
• Horizontal
deflection
overdrive
• White balance
failure (no
PICTURE)
No. of times
STANDBY/TIMER
lamp flashes
Does not light
2 times
5 times
Self-diagnostic
display/Diagnostic
result
—
002:000 or
002:001~255
003:001~255
004:001~255
at the same time
005:000 or
005:001~225
Probable
Cause
Location
• Power cord is not plugged
in.
• Fuse is burned out F4601
(F)
• H.OUT Q511 is shorted.
(A board)
• Q701, Q702, Q703 is
shorted (C6 board)
• -13V is not supplied.
(A board)
• IC 503 faulty (A board)
• G2 is improperly adjusted.
(Note 2)
• CRT problem.
• R(Q703), G(Q702) or
B(Q701) out is faulty
(C6 board)
• IC301 is faulty. (A board)
• No connection A board to
C6 board.
Detected
Symptoms
• Power does not come on.
• No power is supplied to the
TV.
• AC power supply is faulty.
• Power does not come on.
• Load on power line is
shorted.
• Has entered standby state
after horizontal raster.
• Vertical deflection pulse is
stopped.
• Power line is shorted or
power supply is stopped.
• No raster is generated.
• CRT cathode current
detection reference pulse
output is small.
• Micro reset
Note 1: If a + B overcurrent is detected, stoppage of the vertical deflection is detected simultaneously.
The symptom that is diagnosed first by the microcontroller is displayed on the screen.
Note 2: Refer to screen (G2) Adjustment in section 3-4 of this manual.
* R(Q703), G(Q702) or B(Q701) out is faulty (C6 board).
—
101:00 or
101:001~225
• Discharge CRT (C6 Board)
• Static discharge
• External noise
• Power is shut down shortly,
after this return back to
normal.
• Detect Micro latch up.
– 6 –
2. DISPLAY OF STANDBY/TIMER LIGHT FLASH COUNT
KV-AR25M66/AR25M60/AR25M80
RM-993RM-995
KV-AR25N90
RM-996
2 times
+B overcurrent/overvoltage2 times
Vertical deflection stopped
Diagnostic ItemFlash Count*
5 times
Lamp ON 0.3 sec.
Lamp OFF 0.3 sec.
Lamp OFF 3 sec.
White balance failure5 times
* One flash count is not used for self-diagnostic.
STANDBY/SLEEP lamp
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.
4. SELF-DIAGNOSTIC SCREEN DIPLAY
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 occurances of failure for confirmation on the screen:
[To Bring Up Screen Test]
In standby mode, press buttons on the remote commander sequentially in rapid succession as shown below:
[Screendisplay] / channel [5] / Sound volume [-] / Power ON
˘
Note that this differs from entering the service mode (mode volume [+]).
Self-Diagnosis screen display
SELF DIAGNOSTIC
002 : 000
003 : 000
004 : 000
005 : 001
101 : 000
Numeral "0" means that no fault has been detected.
Numeral "1" means a fault has been detected.
– 7 –
KV-AR25M66/AR25M60/AR25M80
RM-993RM-995
KV-AR25N90
RM-996
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.
[Clearing the result display]
To clear the result display to “0”, press buttons on the remote commander sequentially as shown below when the diagnostic
screen is being displayed.
Channel [8] / 0
[Quitting Self-diagnostic screen]
To quit the entire self-diagnostic screen, turn off the power switch on the remote commander or the main unit.
6. SELF-DIANOSTIC CIRCUIT
FROM
CRT
FROM
[+B] Q604 C6
[V] Q509/507
IC301
Y/CHROMA JUNGLE
IK-IN
MP/
18
PROTECT
35
SDA
IC001
SYSTEM
IO-8DATB-DAT
O-LED
46
IO-SDAT
45
51
IC003
MEMORY
521
[+BovercurrentªOCPº]Occurs when an overcurrent on the +B(135) line is detected by Q604. If Q604 go to ON
and the voltage to pin 18 of IC301 should go down when V.SYNC is more than seven
verticals in a period, the unit will automatically turn off.
[Verticaldeflectionstopped]Occurs when an absence of the vertical deflection pulse is detected by Q509 and IC001
shut down the power supply.
[Verticaldeflectionovercurrent]Occurs when an overcurrent on V drive line is detected by Q507. Power supply will be
shut down when detect this by IC001.
[Whitebalancefailure]If the RGB levels* do not balance or become low level within 5 seconds, this error will be
detected by IC301. TV will stay on, but there will be no picture.
* (Refers to the RGB levels of the AKB detection Ref pulse that detects IK.)
– 8 –
SECTION 1
DISASSEMBLY
KV-AR25M66/AR25M60/AR25M80
RM-993RM-995
KV-AR25N90
RM-996
1-1. REAR COVER REMOVAL
2 Rear cover
1-3. CHASSIS ASSY REMOVAL
(KV-AR25M66)
1 Nine screws
(+BVTP 4 × 16)
1-2. SPEAKER BLOCK ASSY REMOVAL
1 Four screws
(Washer head)
(+P 4×16 )
2 Speaker Block Assy
1-4. CHASSIS ASSY REMOVAL
(Except KV-AR25M66)
1-5. SERVICE POSITION
1-6. F BOARD REMOVAL (KV-AR25M66)
1 Two screw
(+BVTP 3x12)
3 Bracket F PWB
2 Two hooks
4 F Board
– 9 –
KV-AR25M66/AR25M60/AR25M80
RM-993RM-995
KV-AR25N90
RM-996
1-7. F BOARD REMOVAL
(Except KV-AR25M66)
1 Two screw
(+BVTP 3x12)
3 Bracket F PWB
4 F Board
2 Two hooks
1-9. TERMINAL BRACKET AND J BOARD
REMOVAL (Except KV-AR25M66)
1-8. TERMINAL BRACKET AND J BOARD
REMOVAL (KV-AR25M66)
6 J Board
1 One screw
(+BVTP 3 × 12)
1 One screw
(+BVTP 3 × 12)
2 Two Hooks
3 One screw
(+BVTP 4 × 16)
4 Terminal bracket
5 Two screws
(+BVTP 3 × 12)
1-10. B1 AND V1 BOARDS REMOVAL
1 Two connectors
1 One screw
(+BVTP 3 × 12)
2 Two Hooks
1-11. P5 BOARD REMOVAL
1 P5 Board
(KV-AR25M66 only)
6 J Board
1 One screw
(+BVTP 3 × 12)
4 Terminal bracket
5 Two screws
(+BVTP 3 × 12)
3 One screw
(+BVTP 4 × 16)
2 V1 Board
(KV-AR25M66 only)
4 B1 Board
(Except KV-AR25M66)
3 One connector
1-12. H1 AND H2 BOARDS REMOVAL
1 Two screws
(Washer head)
(+BVTP 3x12)
6 H2 Board
2 Four hooks
3 H1 Board
– 10 –
5 Cover, H
4 Two hooks
KV-AR25M66/AR25M60/AR25M80
RM-993RM-995
KV-AR25N90
RM-996
1-13. A AND B10 BOARDS REMOVAL
(Except KV-AR25M66)
2 Three screws (Washer head)
1 One screw
(Washer head)
(3 × 12)(+)(BVTP)
3 Three
connectors
5 Four hooks
(3 × 12)(+) BVTP
6 A Board
7 Three hooks
4 One screw
(Washer head)
(3 × 12)(+)(BVTAP)
8 B10 Board
1-14. A AND B8 BOARDS REMOVAL
(KV-AR25M66 ONLY)
2 Three screws
4 B8 Board
5 One screw
(3 × 12)(+) BVTP
6 Four hooks
(3 × 12)(+) BVTP
7 A Board
3Two hooks
1 Four
connectors
1-15. PICTURE TUBE REMOVAL
Note:
• Please make sure the TV set is not in standing position before removing necessary CRT support located on
bottom right and left.
1) Place the TV set with the CRT face down on a cushion jig.
2) Removal the rear cover.
3) Removal the Speaker Block Assy.
!∞ Nut, locking
!¡ Holder, DGC(2)
Removal
q; Spring Tension(2)
Removal
8 Loosen the Neck Assembly
fixing screw and removal
4 Anode Cap Removal
qf Earth Coating Assy
!£ Band, DGC Removal
qs Degaussing Coil
6 Loosen the Neck Assembly
fixing screw and removal
5 C6 Board Removal
9 Chassis Assy Removal
7 VM1 Board Removal
– 11 –
KV-AR25M66/AR25M60/AR25M80
RM-993RM-995
KV-AR25N90
RM-996
• REMOVAL OF ANODE-CAP
Note:
• After removing the anode, short circuit the anode of the picture tube and the anode cap to the metal chassis, CRT
shield or carbon paint on the CRT.
•REMOVING PROCEDURES
a
a
1 Turn up one side of the rubber cap in the direction
indicated by the arrow a.
b
2 Using a thumb pull up the rubber cap firmly in the direc-
tion indicated by the arrow b.
c
anode button
3 When one side of the rubber cap is separated from the
anode button, the anode-cap can be removed by
turning up the rubber cap and pulling it up in the
direction of the arrow c.
•HOW TO HANDLE AN ANODE-CAP
1 Do not damage the surface of anode-caps with
sharp shaped objects.
2 Do not press the rubber too hard so as not to
damage the inside of anode-cap.
b
A metal fitting called the shatter-hook terminal is
built into the rubber.
3 Do not turn the foot of rubber over too hard.
The shatter-hook terminal will stick out or damage
the rubber.
– 12 –
KV-AR25M66/AR25M60/AR25M80
RM-993RM-995
KV-AR25N90
SECTION 2
ADVANCE OPERATION
2-1. "RESET" FUNCTION
1. Purpose
If a customer faces some setting problem that cannot be solved, using the "RESET" function some items will
be reset to its original setting (shipment condition)
2. How to Operate
The way to access to the "RESET" Function:-
a) By pressing "MENU" button or "SELECT" button (for non-menu models) on the Front Key Input and
hold it down for 5 seconds.
3. Subsequent of Operation
Sequential to the resetting operation (either methods being used in No. 2), TV set would shut down once and
automatically turn on again. The power-off duration is expected to be about 500msec. An OSD message,
"RESET" tentatively will be displayed for 10 sec after IK status gets stable.
As a result, some items will be reset to an initial condition (shipment condition) wheareas some other remains
at the last selection by user.
RM-996
Items that remains at the last selection by user
Channel No., Favourite CH Setup,
PIC rotation, OSD Language, Fine tuning, TV System, Skip
Reset Items
Video inputRF
Volume30
Picture modeDYNAMIC
Wide modeOFF
Intelligent pictureON
Sound modeDYNAMIC
Surround modeOFF
Intelligent VolOFF
Multi Picture (PIP)OFF (KV-AR25M66 only)
PIP positionBottom Right
• In order to reduce the influence of geomagnetism on the set's
Purity control
picture tube, face it east or west.
• Switch on the set's power and degauss with the degausser.
3-1. BEAM LANDING
1. Input a white signal with the pattern generator.
Contrast
Brightness
2. Position neck assy as shown in Fig3-2.
}
normal
Fig. 3-3
3. Set the pattern generator raster signal to a green raster.
4. Move the deflection yoke to the rear and adjust with the
purity control so that the green is at the center and the blue
and the red take up equally sized areas on each side.
(See Figures 3-1 through 3-4.)
5. Move the deflection yoke forward and adjust so that the
Blue
Red
Green
entire screen is green. (See Figure 3-2.)
6. Switch the raster signal to blue, then to red and verify the
condition.
7. When the position of the deflection yoke has been decided,
Fig. 3-4
fasten the deflection yoke with the screws and DY spacers.
8. If the beam does not land correctly in all the corners, use a
magnet to adjust it.
(See Figure 3-5.)
Purity control
corrects this area.
b
a
Disk magnets or rotatable
disk magnets correct these
areas (a-d).
Neck assy
Align the edge of
the neck assy with
the edge of the G2 grid.
G2G1G3
Fig. 3-1
Fig. 3-2
– 14 –
c
Deflection yoke positioning
corrects these areas.
a
d
d
Fig. 3-5
b
c
3-2. CONVERGENCE
Purity
BMC
BMC (Hexapole)
Purity
DY pocket
V.STAT
V.STAT
Preparation :
• Before starting this adjustment, adjust the focus, horizontal size
1. (Moving horizontally), adjust the H.STAT control so that the
red, green and blue dots are on top of each other at the center of
the screen.
2. (Moving vertically), adjust the V.STAT magnet so that the red,
green and blue dots are on top of each other at the center of the
screen.
3. If the H.STAT variable resistor cannot bring the red, green and
blue dots together at the center of the screen, adjust the
horizontal convergence with the H.STAT variable resistor and
the V.STAT magnet in the manner given below.
(In this case, the H.STAT variable resistor and the V.STAT
magnet influence each other, so be sure to perform adjustments
while tracking.)
RV702
H. STAT
1 V. STAT
a
bb
2 H. STAT VR
a
RGGBB
3
b
a
B
G
R
b
R
a
a
R
b
G
B
b
B
G
R
b
B
G
R
– 15 –
KV-AR25M66/AR25M60/AR25M80
RM-993RM-995
KV-AR25N90
RM-996
4 BMC (Hexapole) Magnet.
If the red, green and blue dots are not balanced or aligned, then
use the BMC magnet to adjust in the manner described below.
RGBR G B RGB
RB
G
RG
GB
RB
5 Y separation axis correction magnet adjustment.
1. Receive the cross-hatch signal and adjust [PICTURE] to [MIN]
and [BRIGHTNESS] to [STANDARD] .
Neck assyNeck assy
Blue
RedBlue
VM1 boardVM1 board
Note
1. The Red and Blue magnets should be equally far from the
horizontal center line.
2. Do not separate the Red and Blue magnets too far.
(Less than 8 mm)
Red
2. Adjust the Y separation axis correction magnet on the neck
assembly so that the horizontal lines at the top and bottom of
the screen are straight.
(2) Dynamic Convergence Adjustment
Preparation:
• Before starting this adjustment, adjust the horizontal static
convergence and the vertical static convergence
RB
TLHTLV
B
R
RB
R
B
YCHXCV
– 16 –
TLVRotate TLV-2 VOL (29”, 34”) on DY
Rotate TLVVOL (25”)
XCV Rotate XCV Adj core on DY
YCH Rotate YCH VOL on DY
TLHInsertTLHCorrection Plate to DY Pocket
(Left or Right)
ON DY:
KV-AR25M66/AR25M60/AR25M80
RM-993RM-995
KV-AR25N90
RM-996
3-3. FOCUS ADJUSTMENT
FOCUS adjustment should be completed before W/B adjustment.
YCH
TLV2
(3) Screen-corner Convergence
ba
a-d : screen-corner
misconvergence
cd
TLV1
XCV
Focus
Screen
FLYBACK TRANSFORMER (T503)
1. Receive digital monoscope pattern.
2. Set "Picture Mode" to "DYNAMIC".
3. Adjust focus VR so that the lion teeth becomes just focus.
4. Change the receiving signal to white pattern blue back.
5. Confirm Magenta ring is not noticable. Incase magneta ring is
obvious, adjust FOCUS VR to take balance of MAGENTA
RING and FOCUS.
Fix a Permalloy assy corresponding to the misconverged
areas.
a
d
Permalloy assembly
b
c
– 17 –
KV-AR25M66/AR25M60/AR25M80
RM-993RM-995
KV-AR25N90
RM-996
3-4. G2 (SCREEN) AND WHITE BALANCE
ADJUSTMENTS
1. G2 (SCREEN) ADJUSTMENT
1) Set the PICTURE to normal.
2) Put to VIDEO input mode without signals.
3) Connect R, G and B of the C6 board cathode to the
oscilloscope.
4) Adjust BRIGHTNESS to obtain the cathode voltage to the
value below.
5) Adjust G2 (screen) on the FBT until picture shows the point
before cut off.
2. WHITE BALANCE ADJUSTMENT
1) Set to Service Mode (Refer Section 4-1: ADJUSTMENTS
WITH COMMANDER).
2) Input white raster signal.
3) Set the PICTURE to minimum.
4) Select WHB 04 "GCT" and WHB 05 "BCT" with [1] and
[4], and adjust the level with [3] and [6] for the best
white balance.
5) Set the PICTURE to maximum.
6) Select WHB 01 "GDR" and WHB 02 "BDR" with [1] and [4],
and adjust the level with [3] and [6] for the best white
balance.
7) Write into the memory by pressing [MUTING] then [0].
Cathode setting voltage:
175 V ± 2 (VDC)
0 V
3. SUB BRIGHT ADJUSTMENT
1) Set to service mode.
2) Input a staircase signal of black to white from the pattern
generator.
3) BRIGHTNESS ....50%.
PICTURE ............MINIMUM
4) Select WHB 07 "SBR" with [1] and [4], and adjust WHB 07
"SBR" level with [3] and [6] so that the second stripe from the
right is dimly lit.
White
second from the right
Black
– 18 –
SECTION 4
Write with [MUTING]
Write executed with
-
RED
The WRITE display
then the display
returns to green
SERVICE.
1F SERVICE
WRITE
50HPS
GEO00
7F0000A59
1.0M
GREEN
Adjusted with 3
and 6 buttons.
1F50HPS
GEO00
7F0000A59
1.0M
1F50HPS
GEO00
7F0000A59
1.0M
GREEN
WRITE
604S
(KV-AR25N90)
605S
(KV-AR25M60/M66/M80)
604S
(KV-AR25N90)
605S
(KV-AR25M60/M66/M80)
604S
(KV-AR25N90)
605S
(KV-AR25M60/M66/M80)
CIRCUIT ADJUSTMENTS
KV-AR25M66/AR25M60/AR25M80
RM-993RM-995
KV-AR25N90
RM-996
4-1. ADJUSTMENTS WITH COMMANDER
Service adjustments to this model can be performed using the
supplied Remote Commander RM-993, RM-995 and RM-996.
a. ENTERING SERVICE MODE
With the unit on standby
n [DISPLAY] n 5 n VOL (+) n [POWER]
This operation sequence puts the unit into service mode.
The screen display is :
Device
Name
GEO
604S
(KV-AR25N90)
605S
(KV-AR25M60/M66/M80)
Software version
Suffix No
(OEM Code)
b. METHOD OF CANCELLATION FROM SERVICE
MODE
Set the standby condition (Press [POWER] button on the commander),
then press [POWER] button again, hereupon it becomes TV mode.
Item No
00
1.0M
1.1M
Item
Name
HPS 1Cp
597F000A
Marking of new NVM
DataMode
0
Total Power-On time (hours)
SERVICE
PAL,SECAM:50
NTSC :60
50
4-2. ADJUSTMENT METHOD
Item Number 00 of device GEO
This explanation uses H-Position as an example.
1. Select “GEO 00 HPS” with the 1 and 4 buttons.
2. Raise/lower the data with the 3 and 6 buttons.
3. Select the optimum state. (The standard is 1F for PAL
reception.)
4. Write with the [MUTING] button. (The display changes to
WRITE.)
5. Execute the writing with the - button. (The WRITE
display will be changed to red color while excuting, and
back to SERVICE.)
Example on screen display :-
c. METHOD OF WRITE INTO MEMORY
1) Set to Service Mode.
2) Press [1] (UP) and [4] (DOWN), to select the adjustment.
4) Press [MUTING] button to indicate WRITE on the screen.
5) Press [0] button to write into memory.
d. MEMORY WRITE CONFIRMATION METHOD
1) After adjustment, pull out the plug from AC outlet, and then
plug into AC outlet again.
2) Turn the power switch ON and set to Service Mode.
3) Call the adjusted items again to confirm adjustments were made.
1, 4Select the adjustment item.
↓
3, 6Raise/lower the data value.
↓
[MUTING]Writes.
↓
-Executes the writing.
7, -All the data becomes the values in memory.
8, -All user control goes to the standard state.
5, -Service data initialization (Be sure not to use
usually.)
[MUTING], -Write 50Hz adjustment data to 60Hz, or vice
2, -Copy and write all data.
versa.
– 19 –
Use the same method for all Items. Use 1 and 4 to select the
adjustment item, use 3 and 6 to adjust, write with [MUTING],
then execute the write with -.
Note :1.In [WRITE], the data for all items are written into
memory together.
2. For adjustment items that have different standard data
between 50Hz or 60Hz, be sure to use the respective
input signal after adjustment.
• 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.
KV-AR25M66/AR25M60/AR25M80
RM-993RM-995
KV-AR25N90
RM-996
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