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SERVICE MANUAL AG3E CHASSIS
MODEL COMMANDER DEST. CHASSIS NO. MODEL COMMANDER DEST. CHASSIS NO.
KV-DR34M89 RM-991 ME SCC-U43C-A
TRINITRON ® COLOR TV
KV-DR34M69/DR34M89
RM-991
SPECIFICATIONS
Note
Power requirements 110-240V AC, 50/60 Hz KV-DR34M69(GE)/DR34M89
220-240V AC, 50/60 Hz KV-DR34M69(Thailand)
Power consumption (W) Indicated on the rear of the TV
Television system B/G, I, D/K, M
Color system PAL, PAL 60, SECAM, NTSC3.58, NTSC4.43
Stereo/Bilingual system NICAM Stereo/Bilingual B/G, I; KV-DR34M69(Thailand/GE)
A2 Stereo/Bilingual B/G
Teletext language English, Arabic, French
Channel coverage
B/G VHF: E2 to E12
UHF: E21 to E69
CATV: S01 to S03, S1 to S41
I UHF: B21 to B68
CATV: S01 to S03, S1 to S41
D/K VHF: C1 to C12, R1 to R12
UHF: C13 to C57, R21 to R60
CATV: S01 to S03, S1 to S41, Z1 to Z39
M VHF: A2 to A13
UHF: A14 to A79
CATV: A-8 to A-2, A to W+4, W+6 to W+84
8 (Antenna) 75-ohm external terminal
Audio output (Speaker) 6W + 6W
3D WOOFER 15W
Number of terminal
DVideo Input: 4 Output: 1 Phone jacks; 1 Vp-p, 75 ohms
9 Audio Input: 4 Output: 1 Phone jacks; 500 mVrms
(S Video) Input : 2 Y: 1 Vp-p, 75 ohms
unbalanced, sync negative
C: 0.286 Vp-p, 75 ohms
(Component Input : 1 Phono jacks:
Video) Y: 1 Vp-p, 75 ohms
sync negative
PB/CB: 0.7 Vp-p, 75 ohms
PR/CR: 0.7 Vp-p, 75 ohms
Audio: 500mVrms
2 (Headphone) Output: 1 Stereo minijack
Picture tube 34 in
Tube size (cm) 86 Measured diagonally
Screen size (cm) 80 Measured diagonally
Dimension (w/h/d,mm) 894 × 690 × 569
Mass (kg) 85
Design and specifications are subject to change without notice.
CAUTION SAFETY-RELATED COMPONENT WARNING!!
SHORT CIRCUIT THE ANODE OF THE PICTURE TUBE AND COMPONENTS IDENTIFIED BY SHADING AND MARK ! ON
THE ANODE CAP TO THE METAL CHASSIS, CRT SHIELD, THE SCHEMATIC DIAGRAMS, EXPLODED VIEWS AND IN
OR CARBON PAINTED ON THE CRT, AFTER REMOVING THE THE PARTS LIST ARE CRITICAL TO SAFE OPERATION.
ANODE. REPLACE THESE COMPONENTS WITH SONY PARTS
WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS
MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.
2
KV-DR34M69/DR34M89
RM-991
TABLE OF CONTENTS
Section Title Page Section Title Page
SELF DIAGNOSTIC FUNCTION .......................................4 7. DIAGRAMS
7-1. Block Diagram ......................................................... 40
1. DISASSEMBLY 7-2. Schematic Diagram .................................................. 49
1-1. Rear Cover Removal .................................................. 7 (1) A Board Schematic Diagrams ............................ 50
1-2. 3D Speaker Box Removal .......................................... 7 (2) B3 Board Schematic Diagram ............................ 54
1-3. Speaker Removal ........................................................ 7 (3) D Board Schematic Diagram .............................. 56
1-4. Chassis Assy Removal ................................................ 7 (4) D5 Board Schematic Diagram ........................... 58
1-5. DH Board Removal .................................................... 7 (5) C Board Schematic Diagram .............................. 60
1-6. Service Position .......................................................... 7 (6) P and F1 Boards Schematic Diagrams ............... 62
1-7 Service Position on TV Stand .................................... 8 (7) BC1 Board Schematic Diagram ......................... 64
1-8. Terminal Bracket Removal ......................................... 8 (8) H1 Board Schematic Diagram ........................... 66
1-9. B3 and D5 Boards Removal ....................................... 8 (9) V2 Board Schematics Diagram .......................... 68
1-10. F1 Board Removal ...................................................... 8 (10) DH and VM Boards Schematics Diagrams ........ 70
1-11. BC1 and P Boards Removal ....................................... 8 (11) H2 and J Boards Schematic Diagrams ............. 72
1-12. H1 and H2 Boards Removal ....................................... 9 7-3. Voltage Measurement and Waveforms ..................... 76
1-13. A and D Boards Removal ........................................... 9 7-4. Printed Wiring Boards and Parts Location .............. 90
1-14. Picture Tube Removal ................................................ 9 7-5. Semiconductors ...................................................... 102
2. SERVICE JIG .............................................................. 11 8. EXPLODED VIEWS
8-1. Speaker Bracket ...................................................... 105
3. CIRCUIT BOARDS LOCATION ................................. 11 8-2. 3D Speaker ............................................................. 105
8-3. Chassis .................................................................... 106
4. ADVANCE OPERATION 8-4. Picture Tube ............................................................ 108
4-1. "RESET" Function ................................................... 12
9. ELECTRICAL PARTS LIST ...................................... 109
5. SET-UP ADJUSTMENTS
5-1. Beam Landing .......................................................... 13 OPERATING INSTRUCTIONS
5-2. Convergence Adjustment ......................................... 14
5-3. Focus Adjustment ..................................................... 16
5-4. Neck Assy Twist Adjustment ................................... 16
5-5. G2 (SCREEN) and White Balance Adjustment ....... 16
6. CIRCUIT ADJUSTMENTS
6-1. Adjustment With Commander ................................. 17
6-2. Adjustment Method .................................................. 17
6-3. Picture Quality Adjustments .................................... 36
6-4. Sub Hue/Col Adjustments ........................................ 36
6-5. Deflection Adjustments ............................................ 37
6-6. A Board Adjustment After IC003 (MEMORY)
Replacement ............................................................. 38
6-7. Picture Distortion Adjustment .................................. 39
3
KV-DR34M69/DR34M89
RM-991
SELF DIAGNOSTIC FUNCTION
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 error occurs, the STANDBY/TIMER lamp will flash a 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 No. of times Self-diagnostic Probable Detected
Item STANDBY/TIMER display/Diagnostic Cause Symptoms
Description lamp flashes result Location
· Power does not Does not light -- · Power cord is not plugged · Power does not come on.
turn on in. · No power is supplied to the
· Fuse is burned out F1601 TV.
(F1 Board) · AC power supply is faulty.
· +B overcurrent 2 times 002:000 or · H.OUT Q6807 is shorted. · Power does not come on.
(OCP) 002:001~255 · H.IN Q6810 is shorted. · Load on power line is
Q6802 shorted. shorted.
· +B overvoltage 3 times 003:000 or · PH6602 faulty. · Power does not come on.
(OVP) 003:001~255 D6644 faulty, R6651 open.
· 10.5V is not supplied.
(D board)
· Vertical deflection 4 times 004:000 or · V.OUT IC6800 faulty · Vertical deflection pulse is
failure 004:001~255 D6816 faulty stopped.
D6817 faulty · Vertical size is too small.
D6824 faulty · Vertical deflection stopped.
R6852 open
R6851 open (D board)
· White balance 5 times 005:000 or · G2 is improperly adjusted. · No raster is generated.
failure (no 005:001~255 (Note 2) · CRT cathode current
PICTURE) · CRT problem. detection reference pulse
· Video OUT IC9001, 9002, output is small.
9003 are faulty. (C board)
· IC8306 (A board) and
IC4301 (A board) are faulty.
· Horizontal 6 times 006:000 or · C6831 is open circuit. · H pulse output is too high.
deflection failure 006:001~225 PS6606 open, PS6605
open. (D board)
· Micro reset -- 101:00 or · CRT Discharge (C Board) · Power is shut down shortly,
101:001~225 · Static discharge after this return back to
· External noise normal.
· Detect Micro latch up.
Note 1: Refer to screen (G2) Adjustment in section 5-5 of this manual.
4
KV-DR34M69/DR34M89
RM-991
2. DISPLAY OF STANDBY/TIMER LIGHT FLASH COUNT
Diagnostic Item Flash Count*
2 times
+B overcurrent 2 times
+B overvoltage 3 times
3 times
V deflection stop 4 times
White balance failure 5 times
Lamp ON 0.3 sec.
Lamp OFF 0.3 sec. Lamp OFF 3 sec. Horizontal Deflection Failure 6 times
4 times
* One flash count is not used for self-diagnostic.
5 times
6 times
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 DISPLAY
For errors with symptoms such as "power sometimes shuts off" or "screen sometimes goes off" 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:
[Screen display] / 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 Numeral "0" means that no fault has been detected.
003 : 000
004 : 000
005 : 001 Numeral "1" means a fault has been detected.
006 : 002 Numeral "2" means two faults have been detected.
101 : 000
5
KV-DR34M69/DR34M89
RM-991
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-DIAGNOSTIC CIRCUIT
IC4301 IC001 IC003
RGB JUNGLE OVP OCP SYSTEM MEMORY
FROM 3 SDA
58 IKIN 5
CRT (IK)
6
[H] D6825, D6830 34 H PROT
LED 1 54
[V] Q6819, R6832 35 V PROT SDA
CXA2150AQ
[+B overcurrent ªOCPº] Occurs when an overcurrent on the +B(135) line is detected by Q6610
and Q6609.
If Q6610 and Q6609 go to ON, the voltage to the pin3 of IC001 go to UP.
The unit will automatically turn off.
[+B overvoltage ªOVPº] Occurs when an overvoltage on the +B(135) line is detected by D6635
and Q6611. If Q6611 go to ON, the voltage to pin6 of IC001 go to UP. The
unit will automatically turn off.
[Vertical deflection failure] Occurs when an absence of the vertical deflection pulse is detected by
Q6819 and R6832. 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 D6809 and
IC6801.
If the voltage of anode D6830, Q6800 and D6825 goes to High, the
voltage to pin34 of IC4301 go to UP. The unit will automatically turn off.
6
KV-DR34M69/DR34M89
RM-991
SECTION 1
DISASSEMBLY
1-1. REAR COVER REMOVAL 1-2. 3D SPEAKER BOX REMOVAL
1 Two screws
(TP + TWH 4 × 25)
2 Rear cover
2 3D Speaker
box assy
1 Sixteen screws
(+BVTP 4 × 16)
1-3. SPEAKER REMOVAL 1-4. CHASSIS ASSY REMOVAL
1 Two screws
(+BVTP 4 × 16)
2 Two screws
(Washer Head)
(+P4x16)
3 Two screws
(+BVTP 4 × 16)
1-5. DH BOARD REMOVAL 1-6. SERVICE POSITION
(KV-DR34M69 ONLY)
1 Two hooks
2 DH Board
(KV-DR34M69)
7
KV-DR34M69/DR34M89
RM-991
1-7. SERVICE POSITION ON TV STAND
Note: 1) Remove the Rear Cover (refer 1-1)
- unscrew all 16 screws fixed on the Rear Cover. Hold
the top of the TV Cabinet; lift the Rear Cover slightly
upwards to release the Rear Cover foot from the TV
Stand and slide it backwards from the TV Cabinet.
2) Remove the 3D Speaker Box (refer 1-2)
3) Release the Lead Assy Speaker (left side)
4) Lift up the chassis and place it in the Service Use a non elastic and non
Position as shown:- conductive string to tie the
main bracket to the woofer
Caution: 1) In Service Position, make bracket
sure all the TV connections
are connected correctly
before turning on the TV
set.
2) The TV on the TV Stand
without Rear Cover is Place the front of the main
unstable. As such be bracket on to the foot of the
Place the Terminal
careful not to push the TV TV Cabinet
Bracket edge into the hole
foward or backward
on the TV Stand foot
1-8. TERMINAL BRACKET REMOVAL 1-9. B3 AND D5 BOARDS REMOVAL
Note: Access to the B3 board is possible after removal
of the shiledcase. Remove the shiledcase by
removing 2 screws +BVTP 3x16
3 One screw 2 D5 Board
(+BVTP 3 × 12)
3 One screw 4 B3 Board
(+BVTP 3 × 12)
5 Terminal bracket
2 Two screws
(+BVTP 3 × 12)
1 One screw
(+BVTP 4 × 16)
4 Two hooks
1 Two clips
3 Two clips
1-10. F1 BOARD REMOVAL 1-11 . BC1 AND P BOARDS REMOVAL
4 V2 Board
2 BC1 Board
6 P Board
5 One clip
2 F1 Board
3 Two clips
1 Two hooks 1 One clip
8
KV-DR34M69/DR34M89
RM-991
1-12. H1 AND H2 BOARDS REMOVAL 1-13. A AND D BOARDS REMOVAL
2 Three screws
2 H1 Board (3 × 12)(+) BVTP
5 One screw 3 Four hooks
1 Five hooks (3 × 12)(+)(BVTP)
5 H2 Board
3 Three hooks
4 Cover, H
4 A Board
1 Five connectors 5 One screw
(3 × 12)(+)(BVTP)
7 D Board
6 Four hooks
1-14. 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.
· When removing the Nut Locking: first make sure to hold the Nut special CRT with a spanner while opening the Nut
Locking using a torque driver. Then proceed to remove the Nut special CRT using a torque driver.
1) Place the TV set with the CRT face down on a cushion (jig).
2) Removal the Rear Cover.
3) Removal the 3D Box.
4) Unplug all interconnecting leads from the Deflection Yoke, Neck Assy, Degaussing Coils and CRT grounding strap.
+ Nut special CRT (4)
$ Band, DGC(1) Removal (only top-side)
5 Anode Cap Removal
" Bracket Woofer(2) Removal
~ Nut, Locking (4) ) Earth Coating Assy(2) Removal
% Holder, DGC(2) Removal
7 Loosen the Neck Assembly
fixing screw and remove
6 C Board Removal
& DGC(2) Removal
# Supports, CRT(2) Removal
( Spring Tension(2)
Removal
9 Loosen the Deflection Yoke
fixing screw and remove ! Chassis Assy Removal
8 VM Board Removal
9
KV-DR34M69/DR34M89
RM-991
· 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 c
a
Anode Button
a
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
1 Turn up one side of the rubber cap in the direction direction of the arrow c.
indicated by the arrow a.
· 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
b
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.
2 Using a thumb pull up the rubber cap firmly in the direc-
tion indicated by the arrow b.
10
KV-DR34M69/DR34M89
RM-991
SECTION 2
SERVICE JIG
2-1. JIGS REQUIRED FOR SERVICING
REF NO. DESCRIPTION QUANTITY PART NO. REMARK
J-1 TOOL(20P),SERVICE 1 3-702-763-01 For A to BC1 board extension
1 For A to P board extension
J-2 TOOL(40P),SERVICE 1 3-702-764-01 For A to B3 board extension
J-3 TOOL(50P-A),SERVICE 1 3-702-765-01 For D to D5 board extension
J-4 TOOL(7PX2),SERVICE 1 3-702-775-01 For A to V2 board extension
J-1 J-2
J-3 J-4
SECTION 3
CIRCUIT BOARDS LOCATION
C Board
H2 Board
VM Board
D Board
H1 Board
BC1 Board
D5 Board V2 Board
J Board
B3 Board F1 Board
A Board
P Board
DH Board
(Except KV-DR34M89)
11
KV-DR34M69/DR34M89
RM-991
SECTION 4
ADVANCE OPERATION
4-1. "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 (shipping condition)
2. How to Operate
There are 2 ways to access to the "RESET" Function:-
a) By pressing "RESET" button on the Remote Commander.
b) By pressing "MENU" button 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.
Items that remains at the last selection by user
Program No., PIC rotation, OSD Language,
Fine tuning, TV System, Skip
Reset Items
Video input RF Antenna sensitivity HIGH*
Volume 30 Stereo mode STEREO/NICAM*
DRC-MF
Picture mode
DRC1250
DYNAMIC
Bilingual mode
High-deviation mode
MAIN*
AUTO*
} (Except
KV-DR34M89)
Sound mode DYNAMIC Child lock OFF*
Surround mode OFF Wide mode OFF
Color system(video) AUTO Game mode OFF
Multi picture(PIP) OFF Teletext mode OFF
PIP position Bottom-right Sleep timer OFF
OSD recall OFF Wake-up timer OFF
Intelligent volume OFF Sound muting OFF
ECO mode OFF 3DNR ON
Color system(RF) AUTO*
*= only when in RF mode
12
KV-DR34M69/DR34M89
RM-991
SECTION 5
SET-UP ADJUSTMENTS
· The following adjustments should be made when a complete Perform the adjustments in the following order :
realignment is required or a new picture tube is installed. 1. Beam Landing
· These adjustments should be performed with rated power 2. Convergence
supply voltage unless otherwise noted. 3. Focus
4. White Balance
Controls and switches should be set as follows unless otherwise Note : Test Equipment Required.
noted: 1. Color-bar/Pattern Generator
PICTURE control ........................................................... normal 2. Degausser
BRIGHTNESS control ................................................... normal 3. Oscilloscope
................................................................................................................................................................................................................................
Preparation :
· In order to reduce the influence of geomagnetism on the set's
picture tube, face it east or west.
· Switch on the set's power and degauss with the degausser.
5-1. BEAM LANDING
1. Input a white signal with the pattern generator.
Contrast
Brightness }
normal
2. Position neck assy as shown in Fig 5-1.
3. Set the pattern generator raster signal to a green raster. Fig. 5-2
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 5-1 through 5-3.)
5. Move the deflection yoke forward and adjust so that the Blue
entire screen is green. (See Figure 5-2.) Red
6. Switch the raster signal to blue, then to red and verify the
Green
condition.
7. When the position of the deflection yoke has been decided,
fasten the deflection yoke with the screws and DY spacers.
8. If the beam does not land correctly in all the corners, use a Fig. 5-3
magnet to adjust it.
(See Figure 5-4.)
Purity control
corrects this area.
Disk magnets or rotatable
Neck assy disk magnets correct these
areas (a-d).
b a
c d
Align the edge of
the neck assy with
Deflection yoke positioning
the edge of the G3 grid.
corrects these areas.
b
G1 G2 G3
c
Fig. 5-1
a
d
Fig. 5-4
13
KV-DR34M69/DR34M89
RM-991
5-2. CONVERGENCE ADJUSTMENT
Preparation :
· Before starting this adjustment, adjust the focus, horizontal 1 V. STAT
size and vertical size.
a b
· Receive cross hatch/dot pattern and set picture mode to
"STANDARD". a
B B
b b
G G
(1) Horizontal and Vertical Static Convergence
R R
Center dot
R
2 H. STAT VR
G a
B
R G B
R G B
V. STAT
H. STAT VR Magnet
b
B G R
Y magnet
RV702
3
H. STAT
a b
b a
R B
C Board
G G
b B R
1. (Moving horizontally), adjust the H.STAT control so that the
BMC (Hexapole)
red, green and blue dots are on top of each other at the center
Purity
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. Adjust Horizontal Trapezoid with "GEO 11 HTR" in Service
Mode to make H-Trapezoid distortion best.
4. 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. V.STAT
(In this case, the H.STAT variable resistor and the V.STAT
magnet influence each other, so be sure to perform
adjustments while tracking.)
14
KV-DR34M69/DR34M89
RM-991
4 BMC (Hexapole) Magnet. (2) Dynamic Convergence Adjustment
If the red, green and blue dots are not balanced or aligned, Preparation:
then use the BMC magnet to adjust in the manner described · Before starting this adjustment, adjust the horizontal static
below. convergence and the vertical static convergence
· Set the PICTURE and BRIGHTNESS to normal.
R G B R G B R G B
1. Adjust TLH. (TLH convergence piece)
1 Receive the dot/hatch pattern signal and adjust picture quality
by the menu.
2 Correct horizontal mis-convergence of red and blue of both
sides on the X axis.
When red is outside insert TLH convergence piece to right
R B
G R G B G side (TLH +) views from DY neck. And when blue is outside,
R B insert it to left side (TLH ) and take both sides.
R B B R TLH +
(B) (R) (R) (B) TLH -
5 Y separation axis correction magnet adjustment.
1. Receive the cross-hatch signal and adjust [PICTURE] to
[MIN] and [BRIGHTNESS] to [STANDARD] .
2. Adjust XCV core.
2. Adjust the Y separation axis correction magnet on the neck To able to become balance of XCV on the X axis well.
assembly so that the horizontal lines at the top and bottom of 3. Adjust V-TILT.
the screen are straight. Correct the vertical mis-convergence of red and blue of
vertically sides on the Y axis.
Blue Red
Neck assy Neck assy 4. Adjust YCH.
Adjust horizontal mis-convergence of red and blue of
vertically sides on the Y axis. Mentioned above steps 2 to 4
are adjusting respectively perform minuteness tracking.
YCH
TLV1
Red Blue
TLV2 XCV
VM board VM board BMC magnet C board
RV9001
Note
1. The Red and Blue magnets should be equally far from the VM board
horizontal center line.
2. Do not separate the Red and Blue magnets too far. (Less than
8 mm) (3) Screen-corner Convergence
b a
a-d : screen-corner
misconvergence
c d
15
KV-DR34M69/DR34M89
RM-991
Fix a Permalloy assy corresponding to the 5-4. NECK ASSY TWIST ADJUSTMENT
misconverged areas. (1) Receive dot/hatch pattern DRC-MF, DRC1250, DYNAMIC.
b (2) Turn FOCUS VR fully counter-clockwise.
(3) Confirm the dot shape at the screen center. (Fig. 5-4)
(4) Resume FOCUS VR.
a
Note
In case of turning NECK ASSY, loosen the screw 3 turns. Do not
move the position.
OK
Turn NECK ASSY clockwise.
d
Permalloy assembly c
Turn NECK ASSY counter clockwise.
5-3. FOCUS ADJUSTMENT Fig. 5-4
Note
Focus adjustment should be completed before W/B adjustment. 5-5. G2 (SCREEN) AND WHITE BALANCE
ADJUSTMENT
(1) Receive digital monoscope pattern.
(2) Set "A/V CONTROL" to "STANDARD".
1. G2 (SCREEN) ADJUSTMENT
(3) Adjust FOCUS VR so that the center of the screen becomes
1) Set the PICTURE and BRIGHTNESS to normal.
just focus.
2) Put to VIDEO input mode without signals.
(4) Change the receiving signal to white pattern and blue back.
3) Connect R, G and B of the C board cathode to the
(5) Confirm MAGENTA RING is not noticeable. In case
oscilloscope.
MAGENTA RING is obvious, adjust FOCUS VR to balance
4) Adjust BRIGHTNESS to obtain the cathode voltage to the
between MAGENTA RING and FOCUS adjustment.
value below.
5) Whilst watching the picture, adjust the screen VR [RV9002]
located on the C board to the point just before the retrace
lines disappear (to the point before cut-off)
Lead Assy,
Focus
170 V ± 2 (VDC)
0V
2. WHITE BALANCE ADJUSTMENT
1) Set to Service Mode (Refer Section 6-1: ADJUSTMENTS
WITH COMMANDER).
Focus 2) Input white raster signal.
3) Set the following condition.
PICTURE minimum, BRIGHTNESS 50%
Screen 4) Select GCT (WHB 08) and BCT (WHB 09) with 1 and 4,
(No Function) and adjust the level with 3 and 6 for the best white
balance.
5) Set the PICTURE to maximum.
FLYBACK TRANSFORMER (T6803)
6) Select GDR (WHB 05) and BDR (WHB 06) 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 -.
16
KV-DR34M69/DR34M89
RM-991
SECTION 6
CIRCUIT ADJUSTMENTS
6-1. ADJUSTMENTS WITH COMMANDER 6-2. ADJUSTMENT METHOD
Service adjustments to this model can be performed using the Item Number 00 of device GEO
supplied Remote Commander RM-991. This explanation uses V-size as an example.
1. Select "GEO 00 VSZ" with the 1 and 4 buttons.
a. ENTERING SERVICE MODE 2. Raise/lower the data with the 3 and 6 buttons.
With the unit on standby 3. Select the optimum state. (The standard is 1F for PAL
reception.)
n [DISPLAY] n 5 n VOL (+) n [POWER]
4. Press [MUTING] button to indicateWRITE on screen. (The
The screen display is : display from SERVICE (green display) to WRITE (green
display).
Device Item
Name Name Marking of new NVM 5. Execute the writing with the - button. (The WRITE
Item No Data Mode display changes to red color while executing and then back to
SERVICE (green display).
GEO 00 VSZ 29 p SERVICE 50 6. The WRITE execution is completed.
0 046Q 0.9M 59 FF 0 000A
08 1 001 27E Example on screen display :-
3D NR 3D NR H count V count
S/N mode of SYNC of SYNC GREEN
detection detection detection PAL,SECAM:50
NTSC :60
GEO 00 VSZ 29 SERVICE 50
Suffix No Software version
(OEM Code) 0 046Q 0.9M 59 FF 0 000A Adjusted with [3]
Total Power-On time (hours) and [6] buttons.
08 1 001 27E
b. CANCELLATION OF SERVICE MODE
Set the standby condition (Press [POWER] button on the commander), GREEN
then press [POWER] button again, hereupon it becomes TV mode. GEO 00 VSZ 1F WRITE 50
0 046Q 0.9M 59 FF 0 000A
c. METHOD OF WRITE INTO MEMORY 08 1 001 27E
1) Set to Service Mode.
2) Press 1 (UP) and 4 (DOWN), to select the adjustment
item Name. Write with [MUTING]
3) Press 3 or 6 to raise/lower the data value. RED
4) Press [MUTING] button to indicate WRITE on the screen. The WRITE
GEO 00 VSZ 1F WRITE 50 (red display)
5) Press - button to write into memory. return to SERVICE
0 046Q 0.9M 59 FF 0 000A (green display)
shows write is
d. OTHER FUNCTION VIA REMOTE COMMANDER 08 1 001 27E executed.
7, - All the data becomes the values in memory.
8, - All goes to the standard state. Write executed with [0]
5, - Service data initialization (Be sure not to use
usually.) Use the same method for all Items.
[DISPLAY], - Write 50Hz adjustment data to 60Hz, or vice
versa. Note : 1. In [WRITE], the data for all items are written into
2, - Copy and write all data.