KV-1499M70 - Sony TV Service Manual (repair manual)

Model
KV-1499M70
Pages
68
Size
2.35 MB
Type
PDF
Document
Service Manual
Brand
Device
TV
File
kv-1499m70.pdf
Date

View Sony KV-1499M70 Service Manual online

MODEL
COMMANDER DEST. CHASSIS NO.
KV-1499M70
RM-952 ME
SCC-U30D-A
KV-1499M80
RM-952 ME
SCC-U30E-A
KV-HF14M90
RM-952 Hong Kong SCC-U17J-A
KV-HF14P40
RM-952 Malaysia
SCC-U21F-A
MODEL
COMMANDER DEST. CHASSIS NO.
CHASSIS
TRINITRON 
®
 
COLOR TV
SERVICE MANUAL
BG-3S
Self Diagnosis
Supported model
– 2 –
KV-1499M70/1499M80/HF14M90/HF14P40
RM-952
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.
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. 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
110-240 V AC, 50/60 Hz
KV-1499M70/1499M80
220-240V AC, 50/60Hz
KV-HF14M90/HF14P40
Power consumption (W)
Indicated on the rear of the TV
Television system
B/G, I, D/K, M
Except KV-HF14P40
B/G
KV-HF14P40
Color system
PAL, PAL60, SECAM, NTSC4.43, NTSC3.58
Except KV-HF14P40
PAL, PAL60, NTSC4.43, NTSC3.58 (AV IN)
KV-HF14P40
Stereo/Bilingual system
NICAM Stereo/Bilingual B/G, I; A2 Stereo/Bilingual (German) B/G
KV-HF14M90 only
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
Except KV-HF14P40
D/K
VHF : C1 to C12, R1 to R12/ UHF : C13 to C57, R21 to R60
CATV: Z1 to Z39, S01 to S03, S1 to S41
Except KV-HF14P40
M
VHF : A2 to A13/ UHF : A14 to A79/
CATV : A-8 to A-2, A to W+4, W+6 to W+84
Except KV-HF14P40
˘
˘
˘
˘
˘
(Antenna)
75-ohm external terinal
Audio output
3W + 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
KV-1499M70/HF14P40
2
(Headphone)
Output : 1
Minijack
KV-1499M80/HF14M90
Picture tube
14 inch
Tube size (cm)
37
Measured diagonally
Screen size (cm)
34
Measured diagonally
Dimension (w/h/d, mm)
466 x 341 x 416
Mass (kg)
13
Design and specifications are subject to change without notice.
Ø
– 3 –
KV-1499M70/1499M80/HF14M90/HF14P40
RM-952
TABLE OF CONTENTS
Section
Title
Page
SELF DIAGNOSIS FUNCTION
................................
4
1. GENERAL
........................................................................
8
2. DISASSEMBLY
2-1.
Rear Cover Removal ................................................ 31
2-2.
Chassis Assy Removal ............................................. 31
2-3.
F Bracket Removal .................................................. 31
2-4.
Service Position ....................................................... 32
2-5.
Replacement of Parts ............................................... 32
2-5-1.
Replacement of Control Button .......................
32
2-5-2.
Replacement of Light Guide ............................
32
2-6.
Terminal Bracket Removal ...................................... 32
2-7.
Degauss Coil Removal ............................................. 33
2-8.
Picture Tube Removal .............................................. 33
3. SET-UP ADJUSTMENTS
3-1.
Beam Landing .......................................................... 35
3-2.
Convergence ............................................................. 36
3-3.
Focus Adjustment .................................................... 38
3-4.
G2 (Screen) and White Balance Adjustments ......... 38
4. CIRCUIT ADJUSTMENT
4-1.
Adjustments with Commander ................................ 39
4-2.
Adjustment Method ................................................. 40
4-3.
Picture Quality Adjustments .................................... 45
4-4.
A Board Adjustment After IC003 (Memory)
Replacement ............................................................. 45
4-5.
Picture Distortion Adjustment ................................. 46
Section
Title
Page
5. DIAGRAMS
5-1.
Block Diagram ......................................................... 51
5-2.
Frame Schematic Diagram ...................................... 54
5-3
Circuit Boards Location .......................................... 56
5-4.
Schematic Diagrams and Printed Wiring Boards ... 57
(1)
Schematic Diagram of A (1/2) Board ...................... 59
(2)
Schematic Diagram of A (2/2) Board ...................... 63
(3)
Schematic Diagrams of C3 and F Boards ............... 71
5-5.
Semiconductors ........................................................ 77
6. EXPLODED VIEW
6-1.
Chassis ..................................................................... 80
7. ELECTRICAL PARTS LIST
....................................... 82
– 4 –
KV-1499M70/1499M80/HF14M90/HF14P40
RM-952
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
003:001~255
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)
• H.OUT Q511 is shorted. (A
board)
• -13V is not supplied. (A
board)
• IC 503 faulty (A board)
• IC 301 faulty ( A board)
• G2 is improperly adjusted.
(Note 2)
• CRT problem.
• IC301 is faulty. (A board)
• No connection A board to
C3 board.
• Discharge CRT (C3 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 3-4 of this manual.
SELF DIAGNOSTIC FUNCTION
– 5 –
KV-1499M70/1499M80/HF14M90/HF14P40
RM-952
2.
DISPLAY OF STANDBY/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 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.
Lamp ON 0.3 sec.
Lamp OFF 3 sec.
Lamp OFF 0.3 sec.
2 times
5 times
STANDBY/SLEEP lamp
– 6 –
KV-1499M70/1499M80/HF14M90/HF14P40
RM-952
4.
SELF-DIAGNOSTIC SCREEN DISPLAY
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:
[Screen display] /
channel 
[5] /
Sound volume
[-] /
Power ON
˘
Note that this differs from entering the service mode (mode volume 
[+]
).
Self-Diagnosis screen display
002 : 000
003 : 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 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.
– 7 –
KV-1499M70/1499M80/HF14M90/HF14P40
RM-952
6.
SELF-DIAGNOSTIC CIRCUIT
[+B overcurrent ªOCPº]
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.
[Vertical deflection stopped]
Occurs when an absence of the vertical deflection pulse is detected by Q509 and IC001
shut down the power supply.
[Vertical deflection overcurrent]
Occurs when an overcurrent on V drive line is detected by Q507. Power supply will be
shut down when detect this by IC001.
[White balance failure]
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.)
IC301
Y/CHROMA JUNGLE
FROM
CRT
FROM
[+B]
 Q604 C3
[V]
 Q509/507
IC001
SYSTEM
IC003
MEMORY
B-DAT
IO-SDAT
IK-IN
MP/
PROTECT
IO-8DAT
O-LED
SDA
5
45
21
18
51
46
35
– 8 –
KV
-1499M70/1499M80/HF14M90/HF14P40
RM-952
2
WARNING
•  Dangerously high voltages are present inside the TV.
•  Operate the TV only between 110 – 240 V AC. (For ME)/220-240V AC.(For Malaysia).
To prevent fire or shock hazard, do not expose
the TV to rain or moisture.
Do not operate the TV if any liquid or solid object
falls into it. Have it checked immediately by
qualified personnel only.
Do not open the cabinet and the rear cover of the
TV. Refer servicing to qualified personnel.
Do not install the TV in hot, humid or excessively
dusty places.
Do not install the TV in a confined space, such
as a bookcase or built-in cabinet.
Do not block the ventilation openings of the TV.
Do not pull the power cord to disconnect the TV.
Pull it out by the plug.
Disconnect the power cord during lightning
storms or if you are not going to use the TV for
several days.
Install the TV in a stable position. Do not allow
children to climb onto it.
Do not plug in too many appliances to the same
power socket. Do not damage the power cord.
Clean the TV with a dry and soft cloth.
Do not use benzine, thinner, or any other chemicals
to clean the TV. Do not scratch the picture tube.
4
Using Your New TV
VIDEO
VIDEO IN
VIDEO OUT
AUDIO
1
Getting Started
Step 1
Connect the antenna
If you wish to connect a VCR, see the “Connecting a VCR” diagram below.
Using Your New TV
IEC connector
(not supplied)
To video and
audio outputs
VCR
 (yellow)
 (black)
Antenna cable (not supplied)
To  1
(video input)
Audio/Video cable
(not supplied)
: Signal flow
To antenna
output
Antenna cable
(not supplied)
Rear of TV
Rear of TV
Connecting a VCR
To watch the video, press … 
 (see page 11).
or
To ˘
(antenna)
: Signal flow
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  1-1
GENERAL
(KV-1499M70/HF14P40)
 9 
KV
-1499M70/1499M80/HF14M90/HF14P40
RM-952
5
Using Your New TV
Using Y
our New TV
1
1
VHF  LOW   B/G
1
2
Notes
• If you connect a stereo VCR, connect the yellow plug to 
 (the yellow
jack) and the white plug to   (the black jack).
• If you connect  a VCR  to the ˘ (antenna) terminal, preset the signal
output from the VCR to the program number 0 on the TV.
• When no signal is input to the connected video equipment, the TV screen
becomes blue.
Front of TV
Step 2
Note
• Do not use old batteries nor use different types of batteries together.
Step 3
Preset the channels automatically
Tips
• If you want to stop automatic channel presetting, press SELECT twice.
• If your TV has preset an unwanted channel or cannot preset a particular
channel, then preset your TV manually (see page 8).
Note (KV-1499M70 only)
• During automatic channel presetting, your TV screen will indicate “B/G”,
“I”, “D/K” or “M” for the TV system  (TV SYS).
Now You Are Ready. . .
To watch your TV, see page 10.
CAUTION
Do not connect the power cord until you have completed making all other
connections; otherwise a minimum leakage current might flow through the antenna
and other terminals to ground.
Insert the batteries
into the remote
6
Using Your New TV
1
Connecting optional components
You can connect optional video components, such as a VCR, multi disc player,
camcorder or video game.
To watch the picture of the connected equipment, press … 
 (see page 11).
Connecting a camcorder/video game equipment
using the 
 (video input) jacks
Note
• You can also connect video equipment to the … 1 (video input) jacks at
the rear of your TV.
Connecting video equipment using the Ú
(monitor output) jacks
Note
• When connecting a stereo VCR, connect the yellow plug to 
 (the yellow
jack) and the white plug to   (the black jack).
Front of TV
Camcorder
Video game
equipment
To video and
audio outputs
 (yellow)
 (black)
Rear of TV
To
antenna
output
To video and
audio inputs
VCR
: Signal flow
: Signal flow
To
 2
(video input)
To Ú
(monitor
output)
or
Audio/Video cable (not supplied)
Antenna cable (not supplied)
Audio/Video cable
(not supplied)
2
 10 
KV
-1499M70/1499M80/HF14M90/HF14P40
RM-952
8
Using Your New TV
Presetting channels (continued)
1
Press SELECT until
“MANUAL PROGRAM”
appears.
2
Press + or –.
3
Press PROGR +/– or the
number buttons until the
desired program number
appears.
4
Press + or – until the
desired channel picture
appears.
5
Press SELECT.
To change the TV system setting (KV-1499M70 only)
If the picture or sound is abnormal when receiving programs through the ˘ (antenna)
terminal
(1) Press SELECT until “TV SYS” appears.
(2) Press + or – to select the appropriate TV system until the picture or sound quality
is optimal.
1
Presetting channels manually
1
2
3
4
5
6
7
8
0
-/--
9
PROGR
or
B/G
I
D/K
M
TV SYS: B/G
MANUAL PROGRAM
SELECT
VHF LOW B/G
SELECT
7
Using Your New TV
Using Y
our New TV
Presetting
channels
You can preset up to 100 TV channels in
numerical sequence from program
number 1 using the remote and the
buttons on your TV as well.
Presetting channels automatically
1
Press U to turn on the TV.
2
Press AUTO PROGR.
Note (KV-1499M70 only)
• During automatic channel presetting, your TV screen will indicate “B/G”,
“I”, “D/K” or “M” for the TV system  (TV SYS).
To preset channels automatically from a specified program
number
(1) Press SELECT until “AUTO PROGRAM” appears.
(2) Press + or –.
The on-screen display will start flashing.
(3) Press PROGR +/– or the number buttons until the desired program number
appears.
(4) Press + or –.
u
Number buttons
SELECT
.
 +/–
PROGR +/–
+ or –
PIC MODE
TV
1
2
3
4
6
7
8
9
÷
0
5
JUMP
SOUND 
MODE
 
FAVORITE
PROGR
Á
VHF LOW B/G
AUTO
PROGR
continued

Download Sony KV-1499M70 Service Manual (Repair Manual)

Here you can view online and download Sony KV-1499M70 Service Manual in PDF. KV-1499M70 service manual will guide through the process and help you recover, restore, fix, disassemble and repair Sony KV-1499M70 TV. Information contained in service manuals typically includes schematics / circuit diagrams, wiring diagrams, block diagrams, printed wiring boards, exploded views, parts list, disassembly / assembly, pcb.