Sony Trinitron KV-PF14K70 Manual de usuario
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MODEL COMMANDER DEST. CHASSIS NO.
KV-PF14K70 RM-960 Korea SCC-U 5B-A
MODEL COMMANDER DEST. CHASSIS NO.
CHASSIS
TRINITRON
®
COLOR TV
SERVICE MANUAL BG-3S
TV
12
46
789
0
5
TV
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KV-PF14K70
RM-960
SPECIFICATIONS
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.
SAFET -RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED B SHADING AND MARK ! ON THE
SCHEMATIC DIAGRAMS, EXPLODED VIEWS AND IN THE PARTS
LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE
COMPONENTS WITH SON PARTS WHOSE PART NUMBERS
APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS
PUBLISHED B SON . CIRCUIT ADJUSTMENTS THAT ARE
CRITICAL TO SAFE OPERATION ARE IDENTIFIED IN THIS
MANUAL. FOLLOW THESE PROCEDURES WHENEVER CRITICAL
COMPONENTS ARE REPLACED OR IMPROPER OPERATION IS
SUSPECTED.
Note
Power requirements 110-220V AC, 60 Hz
Power consumption (W) Indicated on the rear of the TV
Television system M
Color system NTSC 3.5
Channel coverage VHF : 2 to 13/UHF : 14 to 69/CATV : 1 to 125
˘˘
˘˘
˘(Antenna) 75-ohm external terminal
Audio output 3W
Number of terminal
(Video) Input : 2 Output : 1 Phono jacks; 1 Vp-p, 75 ohms
(Audio) Input : 2 Output : 1 Phono jacks; 500 mVrms
(Earphone) Output : 1 Minijack
Picture tube 14 in.
Tube size (cm) 37 Measured diagonally
Screen size (cm) 34 Measured diagonally
Dimension (w/h/d, mm) 375 x 346 x 416
Mass (kg) 13
Design and specifications are subject to change without notice.
Ø
≥
D
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KV-PF14K70
RM-960
TABLE OF CONTENTS
Section Title Page
SELF DIAGNOSIS FUNCTION ................................ 4
1. GENERAL ..........................................................
2. DISASSEMBL
2-1. Rear Cover Removal ................................................ 1
2-2. Chassis Assy Removal ............................................. 1
2-3. F Bracket Removal .................................................. 1
2-4. Service Position ....................................................... 1
2-5. Replacement of Parts ............................................... 19
2-5-1. Replacement of Multi Button ........................... 19
2-5-2. Replacement of Bar Optical ............................. 19
2-6. Terminal Bracket Removal ...................................... 19
2-7. Degauss Coil Removal............................................. 19
2- . Picture Tube Removal .............................................. 20
3. SET-UP ADJUSTMENTS
3-1. Beam Landing .......................................................... 21
3-2. Convergence ............................................................. 22
3-3. Focus Adjustment .................................................... 24
3-4. G2 (Screen) and White Balance Adjustments ......... 24
4. CIRCUIT ADJUSTMENTS
4-1. Adjustments with Commander ................................ 25
4-2. Adjustment Method ................................................. 26
4-3. Picture Quality Adjustments .................................... 31
4-4. A Board Adjustment After IC003 (Memory)
Replacement ............................................................. 31
4-5. Picture Distortion Adjustment ................................. 32
Section Title Page
5. DIAGRAMS
5-1 Block Diagram ......................................................... 33
5-2 Frame Schematic Diagram ...................................... 36
5-3 Circuit Boards Location .......................................... 3
5-4 Schematic Diagrams and Printed Wiring Boards ... 3
(1) Schematic Diagram of A(1/2) Board ................................. 41
(2) Scheamtic Diagram of A(2/2) Board ................................. 44
(3) Schematic Diagrams of C3 and F Boards ......................... 50
5-5 Semicondutors ......................................................... 53
6. EXPLODED VIEWS
6-1. Chassis ..................................................................... 55
7. ELECTRICAL PARTS LIST ............................... 57
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KV-PF14K70
RM-960
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)
• Micro reset
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
00 :001~255
004:001~255
at the same time
005:000 or
005:001~225
101:00 or
101:001~225
Probable
Cause
Location
• Power cord is not plugged
in.
• Fuse is burned out F4601
(F board)
• H.OUT Q511 is shorted.
(A board)
• -1 V is not supplied.
(A board)
• IC 50 faulty (A board)
• G2 is improperly adjusted.
(Note 2)
• CRT problem.
• IC 01 is faulty. (A board)
• No connection A board to
C board.
• Discharge CRT (C Board)
• Static discharge
• External noise
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.
• Power is shut down shortly,
after this return back to
normal.
• Detect Micro latch up.
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 -4 of this manual.
SELF DIAGNOSTIC FUNCTION
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KV-PF14K70
RM-960
2. DISPLA OF STANDB /TIMER LIGHT FLASH COUNT
Diagnostic Item Flash Count*
+B overcurrent/overvoltage 2 times
Vertical deflection stopped
White balance failure 5 times
* One flash count is not used for self-diagnostic.
3. STOPPING THE STANDB /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.
Lamp ON 0. sec.
Lamp OFF sec.
Lamp OFF 0. sec.
2 times
5 times
STANDBY/SLEEP lamp
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KV-PF14K70
RM-960
4. SELF-DIAGNOSTIC SCREEN DISPLA
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
002 : 000
00 : 000
004 : 000
005 : 001
Numeral "0" means that no fault has been detected.
Numeral "1" means a fault has been detected.
101 : 000
SELF DIAGNOSTIC
5. HANDLING OF SELF-DIAGNOSTIC SCREEN DISPLA
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.
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KV-PF14K70
RM-960
6. SELF-DIAGNOSTIC CIRCUIT
[+BovercurrentªOCPº] Occurs when an overcurrent on the +B(1 5) line is detected by Q604. If Q604 go to ON
and the voltage to pin 18 of IC 01 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.
[ hitebalancefailure] If the RGB levels* do not balance or become low level within 5 seconds, this error will be
detected by IC 01. TV will stay on, but there will be no picture.
* (Refers to the RGB levels of the AKB detection Ref pulse that detects IK.)
IC 01
Y/CHROMA JUNGLE
FROM
CRT
FROM
[+B] Q604 C
[V] Q509/507
IC001
SYSTEM
IC00
MEMORY
B-DAT
IO-SDAT
IK-IN
MP/
PROTECT
IO-8DAT
O-LED
SDA
54521
18 51
465
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KV-PF14K70
RM-960
SECTION 2
DISASSEMBLY
2-2. CHASSIS ASSY REMOVAL
1 Chassis assy
Lever
Lever
2-1. REAR COVER REMOVAL
Six screws
(BVTP 4×16)
Two screw
(BVTP 4×16)
1
2
2-3. F BRACKET REMOVAL
1 Three connector
2 F boar
Lever
2-4. SERVICE POSITION
(N te: Rem ve F Bracket first.)
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KV-PF14K70
RM-960
2-6. TERMINAL BRACKET REMOVAL
A boar
Screw
Terminal boar bracket
2-7. DEGAUSS COIL REMOVAL
1Demagnetization coil
2Tension spring
Picture tube
2-5. REPLACEMENT OF PARTS
For replacement of the Multi Button an Bar Optical, unscrew to exchange with the
new parts, an fix them with screws (+BVTP) respectively.
2-5-1. REPLACEMENT OF MULTI BUTTON
Multi button
Two screws
2-5-2. REPLACEMENT OF BAR OPTICAL
Bar optical
One screw
(BVTP 3×12)
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KV-PF14K70
RM-960
2-8. PICTURE TUBE REMOVAL •REMOVAL OF ANODE-CAP
NOTE : After removing the ano e, short circuit the ano e of the picture tube an
the ano e cap to the metal chassis, CRT shiel or carbon paint on the
CRT.
•REMOVING PROCEDURES
1D n t damage the surface f an de-caps with sharp shaped bjects.
2D n t press the rubber t hard s as n t t damage the inside f an de-cap.
A metal fitting called the shatter-h k terminal is built int the rubber.
3D n t turn the f t f rubber ver t hard.
The shatter-h k terminal will stick ut r damage the rubber.
•HOW TO HANDLE AN ANODE-CAP
3When ne side f the rubber cap is separated fr m the an de butt n, the an de-cap
can be rem ved by turning up the rubber cap and pulling it up in the directi n f the
arr w c.
2Using a thumb pull up the rubber cap firmly in the directi n indicated by the arr w b.
1Turn up ne side f the rubber cap in the directi n indicated by the arr w a.
a
a
b
b
2 A boar
5 Deflection yoke
Cushion
6 Four screws
(Tapping screws)
1 Ano e cap
3 F boar
4 C3 boar
c
Ano e button
Ano e button
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