Sony KV-DW36K9H Service Manual
SERVICE MANUAL
DX-1J
CHASSIS
MODEL COMMANDER DEST. CHASSIS NO.
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KV-DW36K9H RM-970 Korean SCC-P81A-A
MODEL COMMANDER DEST. CHASSIS NO.
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RM-970 KV-DW36K9H
TRINITRON COLOR TV
R
KV-DW36K9H
RM-970
Specifications
Antenna 75 ohm external terminal for VHF/UHF
Television System NTSC, American TV Standard
Screen Size (measured diagonally) 36 inches
Channel Coverage
VHF 2-13
UHF 14-69
CATV 1-125
Power Requirements
Number of Inputs/Outputs
Video (IN) 4 1 Vp-p, 75 ohms unbalanced, sync negative
S Video (IN) 3 Y: 1 Vp-p, 75 ohms unbalanced, sync negative
Audio (IN) 6 500 mVrms (100% modulation)
TV Out 1 Video: 1 Vp-p 75 ohms unbalanced, Sync
CONTROL S (IN/OUT) 1 Minijacks
DTV (HD)/DVD Input 2 (Y, P
RF Inputs 1
Converter 1
Speaker Output 5 W x 2, 10W x 1
Dimensions (W x H x D) 978 x 652 x 587 mm
Mass 89.8 kg
Power Consumption
Design and specifications are subject to change without notice.
220 V AC, 60 Hz
C: 0.286 Vp-p (Burst signal), 75 ohms
Impedance: 47 kiloohms
negative
Audio: 500 mVrms
, PR) Y: 1.0 Vp-p, 75 ohms unbalanced, sync
B
Indicated on the rear of the TV
negative
P
: 0.7 Vp-p, 75 ohms
B
P
: 0.7 Vp-p, 75 ohms
R
– 2 –
KV-DW36K9H
RM-970
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.
AN ISOLATION TRANSFORMER SHOULD BE USED DURING
ANY SERVICE TO AVOID POSSIBLE SHOCK HAZARD, BECAUSE OF LIVE CHASSIS.
THE CHASSIS OF THIS RECElVER IS DIRECTLY CONNECTED
TO THE AC POWER LINE.
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
THESECOMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY. CIRCUIT ADJUSTMENTS THAT
ARE CRITICAL TO SAFEOPERATION ARE IDENTIFIED IN THIS
MANUAL. FOLLOW THESE PROCEDURES WHENEVER CRITICAL COMPONENTS ARE REPLACED OR IMPROPER OPERATION IS SUSPECTED.
(CAUTION)
WARNING!!
– 3 –
KV-DW36K9H
RM-970
TABLE OF CONTENTS
Section Title Page
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1. GENERAL ........................................................................... 8
2. DISASSEMBLY
2-1. REAR COVER ASSEMBLY .................................... 37
2-2. CHASSIS ASSEMBLY ............................................. 37
2-3. SERVICE POSITION ............................................... 37
2-4. SPEAKER BOX ASSEMBLY .................................. 37
2-5. F1 BOARD ................................................................ 38
2-6. F1 AND U BRACKETS ........................................... 38
2-7. B2 AND BOARDS ................................................... 38
2-8. A1 BOARD ............................................................... 38
2-9. D BOARD ................................................................. 39
2-10. DH BOARD .............................................................. 39
2-11. H3, H7 AND S8 BOARDS ....................................... 39
2-12. HARNESS ARRANGEMENT ................................. 40
2-13. REMOVAL OF ANODE-CAP .................................. 41
2-14. CRT ........................................................................... 42
3. SERVICE MODE
Section Title Page
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5. SAFETY RELATED ADJUSTMENTS
5-1. +B MAX VOLTAGE CONFIRMATION ................. 69
5-2. HV REGULATION CIRCUIT ADJUSTMENT ....... 69
5-3. HV PROTECTOR CIRCUIT ADJUSTMENT ......... 69
5-4. IK PROTECTOR CIRCUIT CHECK (D BOARD) . 69
6. DIAGRAMS
6-1. BLOCK DIAGRAM (1) ........................................... 71
BLOCK DIAGRAM (2) ........................................... 73
BLOCK DIAGRAM (3) ........................................... 75
BLOCK DIAGRAM (4) ........................................... 77
BLOCK DIAGRAM (5) ........................................... 79
BLOCK DIAGRAM (6) ........................................... 81
BLOCK DIAGRAM (7) ........................................... 83
BLOCK DIAGRAM (8) ........................................... 85
6-2. CIRCUIT BOARDS LOCATION ................................. 87
6-3. PRINTED WIRING BOARDS AND SCHEMATIC
DIAGRAMS .................................................................. 87
6-4. SEMICONDUCTORS ................................................. 158
3-1. METHOD OF SETTING THE SERVICE
ADJUSTMENT MODE ............................................ 43
3-2. SERVICE MODE ADJUSTMENT ........................... 43
3-3. MEMORY WRITE CONFIRMATION METHOD .. 43
3-4. ADJUSTING BUTTONS AND INDICATOR ......... 43
3-5. SERVICE MODE LIST ............................................ 44
4. SET-UP ADJUSTMENTS
4-1. BEAM LANDING .................................................... 63
4-2. CONVERGENCE ADJUSTMENT .......................... 64
4-3. G2 (SCREEN) ADJUSTMENT ................................ 66
4-4. FOCUS ADJUSTMENT 1 ........................................ 66
4-5. NECK ASSY TWIST AJUSTMENT ........................ 66
4-6. P&P SUB CONTRAST ADJUSTMENT
(VIDEO) (SCON) ..................................................... 67
4-7. P&P SUB CONTRAST ADJUSTMENT
(RF) (SCON) ............................................................. 67
4-8. P&P SUB-HUE AND SUB-COLOR
ADJUSTMENT (VIDEO) (SHUE, SCOL) .............. 67
4-9. P&P SUB-HUE AND SUB-COLOR
ADJUSTMENT (RF) (SHUE, SCOL) ...................... 67
4-10. WHITE BALANCE, SUB BRIGHT
ADJUSTMENT ......................................................... 68
4-11. FOCUS ADJUSTMENT 2 ........................................ 68
4-12. PICTURE DISTORTION ADJUSTMENT .............. 68
7. EXPLODED VIEWS
7-1. CHASSIS SECTION .............................................. 161
7-2. SPEAKER SECTION ............................................. 162
7-3. CRT SECTION ....................................................... 163
7-4. BEZNET SECTION ................................................ 164
8. ELECTRICAL PARTS LIST..................................... 165
– 4 –
SELF DIAGNOSIS FUNCTION
1. Summary of Self-Diagnosis Function
• This device includes a self-diagnosis function.
• In case of abnormalities, the STANDBY/ indicator automatically blinks. It is possible to predict the abnormality
location by the number of blinks. The Instruction Manual describes blinking of the /STANDBY/ indicator.
• If the symptom is not reproduced sometimes in case of a malfunction, there is recording of whether a malfunction was generated
or not. Operate the remote command to confirm the matter on the screen and to predict the location of the abnormality.
2. Diagnosis Items and Prediction of Malfunction Location
• When a malfunction occurs the STANDBY/ indicator only blinks for one of the following diagnosis items. In case of
two or more malfunctions, the item which first occurred blinks. If the malfunctions occurred simultaneously, the item with the
lower blink count blinks first.
• The screen display displays the results regarding all the diagnosis items listed below. The display “ 0 ” means that no malfunc-
tions occurred.
Number of times
Diagnosis Item
+B overcurrent (OCP)
+B overvoltage (OVP)
Vertical deflection stopped
(V-STOP)
STANDBY/
indicator blinks
2 times
3 times
4 times
Probable Cause Location
T8001 (FBT) Rare short-circuit etc. (D board)
Q5030 (H-OUT), Q5028 (D board)
+B load open (D board) R6570 Open
PH6502, control system malfunction L2603
Open
IC5004 (V. OUT) (D board) IC201
(CXA2150Q) (A1 board)
Detected Symptoms
Has entered standby mode.
(Relay is off when the power
turns on.)
Has entered standby mode.
Has entered standby mode.
KV-DW36K9H
RM-970
IK error (AKB ERROR)
Low-B error
Horizontal deflection
stopped (H-STOP)
5 times
6 times
7 times
VIDEO OUT IC malfunction IC9001, 9002,
9003 (C1 board) IC201 (CXA2150Q)
(A1 board)
Sub power supply system load shorted etc.
(A1 board)
IC201 (CXA2150Q) (A1 board) Q5031
(S-COR-OUT), Q5030 (H-OUT), Q5028
3. Blinking count display of STANDBY/ indicator
< FRONT PANEL >
STANDBY/ indicator
* One blink is not used for self-diagnosis.
•EXAMPLE
<Diagnosis Items> <Number of Blinks>
• +B overcurrent 2 times
• +B overvoltage 3 times
• Vertical deflection stop 4 times
Lamp ON : 0.3 seconds
Lamp OFF : 0.3 seconds
Has not entered standby mode.
Has entered standby mode.
Has entered standby mode.
Lamp OFF :
3.0 seconds
Release of STANDBY/ indicator blinking.
• The STAND BY indicator blinking display is released by turning OFF the power switch
on the TV main unit or removing the plug from the power.
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KV-DW36K9H
RM-970
4. Self-diagnosis screen displays
• In cases of malfunctions where it is not possible to determine the symptom such as when the power goes off occasionally or when
the screen disappears occasionally, there is a screen display on whether the malfunction occurred or not in the past (and whether
the detection circuit operated or not) in order to allow confirmation.
<Screen Display Method>
• Quickly press the remote command button in the following order from the standby state.
5
b b b
–
˘
Be aware that this differs from the method of
entering the service mode ( + ).
Self-diagnosis screen display
SELF CHECK
2 : +B OCP G
3 : +B OVP G
4 : V STOP G
5 : A K B G
6:LOW B G
7 : H STOP G
101 : WDT 0
0 0 0 0 0 - 0 0 0 0 0
• "G" : OK, "NG" : DETECTS ONCE OR MORE
• THE 10 DIGITS OF NUMERALS ARE FOR CHECKING,
NO RELATION TO DIAGNOSIS.
• 101 : NO LED BLINKING FOR WDT.
"0" : NUMBER OF DETECTION.
5. After the self-diagnosis operation
• The results display is not automatically cleared. In case of repairs and after repairs, check the self-diagnosis screen and be sure
to return the results display to “ 0 ”.
• If the results display is not returned to “ 0 ” it will not be possible to judge a new malfunction after completing repairs.
<Method of Clearing Results Display>
1. Power off (Set to the standby mode)
2. b 5 b + b (Service Mode)
3. Channel 8 b (Test reset = Factory preset condition)
<Method of Ending Self Diagnosis Screen>
• When ending the self-diagnosis screen completely, turn the power switch OFF on the remote commander or the main unit.
– 6 –
Q727
Q729
OVP
(FROM D BOARD)
AC-RLY
(TO D BOARD)
OCP
(FROM D BOARD)
• I2C YCJ RETURN DATA
11111111
LED
BLINKING
TIMES
2
3
4
5
6
7
LATCH
LATCH
Q726
Q728
SYMPTOM
+B OCP
+B OVP
V-STOP
AKB
LOW-B ERROR
H-STOP
OVP
MAIN
MICROCOMPUTER
IC701
M308V2
OCP
12C BUS
A K B
H-STOP
V-STOP
KV-DW36K9H
RM-970
A1 BOARD
YCJ IC201
CXA-2150Q
WHEN
A K B
H-STOP
V-STOP
ARE ALL 1= LOW B ERROR
+B OCP If the IC701 Pin 44 (+B OCP DET) is high 2 seconds, turn AC-RELAY low (P-OFF) and make STANDBY
LED blinks twice.
+B OVP If the IC701 Pin 45 (+B OVP DET) is high 2 seconds, turn AC-RELAY low (P-OFF) and make STANDBY
LED blinks three times.
V-STOP If the return data Bit0 (VNG) from CXA2150Q is “1” while 2 seconds, turn AC-RELAY low (P-OFF) and
make STANDBY LED blinks four times.
AKB If the return data Bit2 (IKREF) from CXA2150Q is “0” and there is no change for 20 seconds, make
STANDBY LED blinks five times.
At this time, AC-RELAY continues to high.
LOW-B ERROR If the IC701 Pin 69 (AC-RELAY) is high and the Pin 43 (LOW-B ERROR DET) is low while 5 seconds,
turn AC-RELAY low (P-OFF) and make STANDBY LED blinks six times.
H-STOP If the return data Bit1 (HNG) from CXA2150Q is “1” while 2 seconds, turn AC-RELAY low (P-OFF) and
make STANDBY LED blinks seven times.
W. D. T. Observes the watch dock timer (BUS COMMUNICATION ERROR DET) bus communication. If errors are
detected, counts up and reform the bus communication and displays the number of time.
(No LED blinking).
– 7 –
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KV-DW36K9H
RM-970
The operating instructions mentioned here are partial abstracts
from the Operating Instruction Manual. The page numbers of
the Operating Instruction Manual remain as in the manual.
SECTION 1
GENERAL
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RM-970
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