Sony TRINITRON KV-AR14M50 User manual

REVISION HISTORY BX1
MODEL
KV-AR14M50
KV-AR14M50
KV-AR14M80
KV-AR14P52
PA RT N O. : 9-872-365-02
CHASSIS
NO. SUFFIX DATE SUPP / CORR DESCRIPTION
1 -01 2003/8 -- 1st Issue
2 -02 2004/1 Supp-1 IC001 Part Number Change (Page 68)

CHASSIS
TRINITRON ® COLOR TV
SERVICE MANUAL BX1
RM-W101
MODEL COMMANDER DEST. CHASSIS NO.
KV-AR14M50 RM-W101 Malaysia SCC-U96D-A
KV-AR14M50 RM-W101 GE SCC-V04C-A
KV-AR14M80 RM-W101 ME SCC-U90D-A
KV-AR14P52 RM-W101 Thailand SCC-U94J-A
MODEL COMMANDER DEST. CHASSIS NO.

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KV-AR14M50/AR14M80/AR14P52
RM-W101
Note
Power requirements 110-240 V AC, 50/60 Hz
220-240 V AC, 50/60 Hz Malaysia
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
Channel coverage
B/G VHF: 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/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
MVHF: 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) 3W + 3W
Number of terminal
DVideo Input: 2 Output: 1 Phono jacks; 1 VP-P, 75 ohms
≥Audio Input: 2 Output: 1 Phono jacks; 500 mVrms
(S Video) Input: 1 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
CB: 0.7 Vp-p, 75 ohms
CR: 0.7 Vp-p, 75 ohms
Audio: 500 mVrms
2(Headphone) Output: 1 Stereo minijack
Picture tube 14 in.
Tube size (cm) 37 Measured diagonally
Screen size (cm) 34 Measured diagonally
Dimension (w/h/d, mm) 414 x 352 x 410
Mass (kg) 13
Design and specifications are subject to change without notice.
SPECIFICATIONS
(KV-AR14M50/AR14M80)
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.
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 REMOVINGTHE
ANODE.

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KV-AR14M50/AR14M80/AR14P52
RM-W101
Note
Power requirements 220-240 V AC, 50/60 Hz
Power consumption (W) Indicated on the rear of the TV
Television system B/G
Color system PAL, PAL 60, NTSC3.58 (AV IN), NTSC4.43
Stereo/Bilingual system A2 Bilingual B/G
Channel coverage
B/G VHF: E2 to E12 / UHF: E21 to E69
CATV: S01 to S03, S1 to S41
8(Antenna) 75-ohm external terminal
Audio output (Speaker) 3W + 3W
Number of terminal
DVideo Input: 2 Output: 1 Phono jacks; 1 VP-P, 75 ohms
≥Audio Input: 2 Output: 1 Phono jacks; 500 mVrms
(Component Input: 1 Phono jacks;
Video) Y: 1 Vp-p, 75 ohms,
sync negative
CB: 0.7 Vp-p, 75 ohms
CR: 0.7 Vp-p, 75 ohms
Audio: 500 mVrms
2(Headphone) Output: 1 Stereo minijack
Picture tube 14 in.
Tube size (cm) 37 Measured diagonally
Screen size (cm) 34 Measured diagonally
Dimension (w/h/d, mm) 414 x 352 x 410
Mass (kg) 13
Design and specifications are subject to change without notice.
SPECIFICATIONS
(KV-AR14P52)
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.
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 REMOVINGTHE
ANODE.

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KV-AR14M50/AR14M80/AR14P52
RM-W101
TABLE OF CONTENTS
SELF DIAGNOSTIC FUNCTION ............................. 4
1. DISASSEMBLY
1-1. Rear Cover Removal ................................................. 8
1-2. Speaker Removal ...................................................... 8
1-3. Chassis Assy Removal .............................................. 8
1-4. Service Position ........................................................ 8
1-5. Terminal Bracket Removal ....................................... 8
1-6. A Board Removal ...................................................... 8
1-7. Picture Tube Removal ............................................... 9
2. SET-UP ADJUSTMENTS
2-1. Beam Landing ......................................................... 10
2-2. Convergence ............................................................ 11
2-3. Focus Adjustment ................................................... 13
2-4. G2 (SCREEN) Adjustments ................................... 13
2-5 White Balance Adjustment ..................................... 13
2-6 Sub Bright Adjustment ........................................... 13
3. CIRCUIT ADJUSTMENTS
3-1. Adjustment With Commander ................................ 14
3-2. Adjustment Method ................................................ 15
3-3. Picture Quality Adjustment .................................... 29
3-4. Deflection Adjustment ............................................ 29
3-5. Drive Adjustment .................................................... 30
3-6. Picture Distortion Adjustment ................................ 31
Section Title Page Section Title Page
4. DIAGRAMS
4-1. Block Diagram ........................................................ 32
4-2. Circuit Boards Location .......................................... 33
4-3. Schematic Diagram ................................................. 34
4-3-1. A Board — Processor (Block A) ................. 35
4-3-2. A Board — Audio (Block B) ....................... 36
4-3-3. A Board — Power Supply (Block C) .......... 38
4-3-4. A Board — Deflection (Block D) ................ 40
4-3-5. A Board — Tuner (Block E) ........................ 42
4-3-6. A Board — Jack (Block F) .......................... 44
4-3-7. C Board Schematic Diagrams ...................... 46
4-4. Voltage Measurement and Waveforms ................... 49
4-5. Printed Wiring Boards and Parts Location ............. 52
4-6. Semiconductors ....................................................... 55
5. EXPLODED VIEWS
5-1. Chassis..................................................................... 57
6. ELECTRICAL PARTS LIST .................................... 58
INSTRUCTION MANUAL

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KV-AR14M50/AR14M80/AR14P52
RM-W101
The units in this manual contain a self diagnostic function. If an error occurs, the STANDBY (1) indicator will automatically
begin to flash. A description of the self-diagnosis function is explained in the instruction manual. The number of times the
STANDBY (1) indicator flashes translates to a probable source of the problem. 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 (1) indicator will flash a set number of times to indicate the possible cause of the
problem. If there is more than one error, the indicator will identify the first of the problem areas.
Result for all of the following diagnosis items are displayed on screen. No error has occured if the screen displays a "0".
*If a +B overcurrent is detected, stoppage of the vertical deflection is detected simultaneously. The symptom that is
diagnosed first by the mirco controller is displayed on the screen.
** Refer to Screen (G2) Adjustment in this manual.
SELF DIAGNOSTIC FUNCTION
Diagnosis
Item
Description
Power does
not turn on
+B overcurrent
(OCP)*
V-Protect
IK (AKB)
Power supply
NG (+5V) for
Video Processor
No. of timer
STANDBY (1)
indicator flashes
Does not light
2 times
4 times
5 times
8 times
Self-Diagnostic
display/
Diagnosis result
–
2:0
or
2:1 ~ 255
4:0
or
4:1 ~ 255
5:0
or
5:1 ~ 255
8:0
or
8:1 ~ 255
Probable Cause
Location
• Power cord is not plugged
in.
• Fuse is burned out (F600)
A board.
• H OUT (Q805) is shorted.
(A board)
• IC751 is shorted. (C board)
• +13V is not supplied.
(A board)
• IC804 is faulty. (A board)
• Video OUT (IC1545) is
faulty. (A board)
• IC001 is faulty. (A board)
• Screen (G2) is improperly
adjusted.**
• IC604 faulty.
• IC602 faulty.
Detected
Symptoms
• Power does not turn on.
• No power is supplied on
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 shorted.
• No raster is generated.
• CRT Cathode current
detection reference pulse
output is small.
• No power supply to CRT
ANODE.
• No RASTER is generated.

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KV-AR14M50/AR14M80/AR14P52
RM-W101
STANDBY uindicator
2. DISPLAY OF STANDBY (1)INDICATOR
FLASH COUNT
3. STOPPING THE STANDBY (1)INDICATOR FLASH
Turn off the power switch on the TV main unit or unplug the power cord from the outlet to stop the STANDBY (1)
indicator 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 occurrences of failure on the screen for confirmation.
[To Bring Up Screen Test]
In standby mode, press buttons on the remote commander sequentially in rapid succession as shown below:
Display /Channel 5/Volume /Power / TV
˘
Note that this differs from entering the service mode (volume [+]).
The following screen will be displayed indicating the error count.
Diagnostic Item Flash Count*
+B overcurrent 2 times
V-Protect 4 times
IK (AKB) 5 times
Power Supply NG (+5V) 8 times
for Video processor
* One flash count is not used for self-diagnosis.
Lamp ON 300ms
Lamp OFF 3 sec.
Lamp OFF 300ms
2 times
4 times
5 times
8 times
2 : 0
3 : N/A
4 : 0
5 : 1
8 : 0
101 : N/A
SELF DIAGNOSTIC
Numeral "0" means that no fault was detected.
Numeral "1" means the number of a fault occurrence (1 ~ 255).

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KV-AR14M50/AR14M80/AR14P52
RM-W101
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-diagnosis 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 subsequent as shown below when the
self-diagnostic screen is being displayed.
8,-
[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
[+B overcurrent $OCP%] Occurs when an overcurrent on the +B(135V) line is detected by pin 32 of IC001 (A board).
If the voltage of pin 32 of IC001 (A board) is more than 4V, the unit will automatically go
to standby.
[V-PROTECT] Occurs when an absence of the vertical deflection pulse is detected by pin 13 of IC001
(A board).
[IK $AKB%] If the RGB levels* do not balance within 15 sec after the power is turned on, this error will
be detected by IC001 (A board). TV will stay on, but there will be 5 times LED blinking.
Occurs when IC001 internal HV protect detects an abnormal H-Pulse (frequency) due to
improper power supply to IC001. TV cuts off high voltage power of anode CRT. No picture
will be detected. eg: IC602, IC604 go faulty.
* (Refers to the RGB levels of the AKB detection Ref pulse that detects IK.)
A BOARD
IC001
Y/CHROMA JUNGLE
A BOARD
IC804
V.OUT
A BOARD
IC001
SYSTEM
A BOARD
IC003
MEMORY
FROM
C BOARD
IC751 PIN 5
IK
EHTO
RED LED
DISPLAY
SDA1
V.GUARD
SDA
5
F.B-PLS 3 1384
32 122
A BOARD
FROM
Q804
COLLECTOR
99
POWER SUPPLY NG (+5V)
for VIDEO PROCESSOR

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KV-AR14M50/AR14M80/AR14P52
RM-W101
2Terminal bracket
3One screws
(+BVTP 4 × 16)
1One screws
(+BVTP 3 × 12)
4FBT
bracket
A Board
SECTION 1
DISASSEMBLY
1-1. REAR COVER REMOVAL 1-2. SPEAKER REMOVAL
1-3. CHASSIS ASSY REMOVAL 1-4. SERVICE POSITION
1-5. TERMINAL BRACKET REMOVAL 1-6. A BOARD REMOVAL
2Rear cover
1Six screws
(+BVTP 4 × 16)
1Four screws
(Washer Head)
(+P4 × 16)
2Speaker Block Assy