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SERVICE MANUAL
AA-2U CHASSIS
MODEL
COMMANDER
DEST
CHASSIS NO.
KV-32FV16
RM-Y171
US
SCC-S44E-A
KV-32FV26
RM-Y170
US
SCC-S44F-A
KV-32FV26
RM-Y170
CND
SCC-S45D-A
KV-34FV16
RM-Y171
E
SCC-S50A-A
KV-34FV16C
RM-Y171
E
SCC-S50B-A
KV-34FX260
RM-Y170
E
SCC-S50C-A
KV-34FX260C RM-Y170
E
SCC-S50D-A


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KV-32FV16/32FV26/34FV16/34FV16C/34FX260/34FX260C
1)
1 Vp-p 75 ohms unbalanced, sync negative
2)
Y: 1 Vp-p 75 ohms unbalanced, sync negative
C: 0.286 Vp-p (Burst signal), 75 ohms
3)
Y: 1.0 Vp-p, 75 ohms, sync negative; P
B: 0.7 Vp-p, 75 ohms;
P
R: Vp-p, 75 ohms
4)
500 mVrms (100% modulation), Impedance: 47 kilohms
5)
More than 408 mVrms at the maximum volume setting (variable)
More than 408 mVrms (fix); Impedance (output): 2 kilohms
SPECIFICATIONS
(
· )SRS (SOUND RETRIEVAL SYSTEM)
The (
·)SRS (SOUND RETRIEVAL SYSTEM) is
manufactured by Sony Corporation under license
from SRS Labs, Inc. It is covered by U.S. Patent No.
4,748,669. Other U.S. and foreign patents pending.
The word `SRS' and the SRS symbol (
· ) are
registered trademarks of SRS Labs, Inc.
BBE and BBE symbol are trademarks of BBE Sound,
Inc. and are licensed by BBE Sound, Inc. under U.S.
Patent No. 4,638,258 and 4,482,866.
Television system
American TV standard, NTSC
Channel coverage
VHF: 2-13/ VHF: 14-69/ CATV: 1-125
Picture tube
Flat Trinitron® tube
Visible screen size
32-inch picture measured diagonally
Actual screen size
34-inch measured diagonally
Antenna
75 ohm external terminal for VHF/UHF
Supplied Accessories
RM-Y170 (KV-32FV26/KV-34FX260/34FX260C ONLY)
RM-Y171 (KV-32FV16/34FV16/34FV16C ONLY)
Batteries size AA (R6) (2)
Wireless Stereo Headphones MDR-1F0230
(ALL EXCEPT KV-32FV16/34FV16/34FV16C)
Battery for Headphones size AA (R6) (1)
(ALL EXCEPT KV-32FV16/34FV16/34FV16C)
Optional Assessories
AV Cable: VMC-810/820/830 HG
Audio Cable: RKC-515HG
S-LINK Cable: RK-G69HG
Component Video Cable: VMC-10/30 HG
TV Stand: SU-32FD3
Design and specifications are subject to change without notice.
KV-32FV16
KV-32FV26
KV-34FV16
KV-34FV16C
KV-34FX260
KV-34FX260C
Power requirements
120V/60Hz
120V-220V / 60Hz, 50Hz
Number of inputs/outputs
Video
1)
S Video
2)
Y,PB, PR
3)
Audio
4)
Audio Out
5)
Monitor Out
S-Link
Control-S (IN/OUT)
Speaker output(W)
Power Consumption(W)
In use(Max)
In standby
Dimensions(W/H/D)
(mm)
(inches)
Mass
(kg)
(lbs)
882 x 687 x 592 mm
34
3/4
x 27 x 23
1/4
176 lbs.
80 kg
3
2
1
4
1
1
3
1
15Wx2
200W
2W


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KV-32FV16/32FV26/34FV16/34FV16C/34FX260/34FX260C
Section
Title
Page
Warnings and Cautions ............................................................................................................................................................... 4
Self-Diagnostic Function ............................................................................................................................................................. 4
Safety Check-Out Instructions ................................................................................................................................................... 7
1.
DISASSEMBLY
1-1.
Rear Cover Removal ....................................................................................................................................................... 8
1-2.
Chassis Assembly Removal ........................................................................................................................................... 8
1-3.
Service Position .............................................................................................................................................................. 8
1-4.
Picture Tube Removal ..................................................................................................................................................... 9
2.
SET-UP ADJUSTMENTS
2-1.
Beam Landing ............................................................................................................................................................... 10
2-2.
Convergence ................................................................................................................................................................ 11
2-3.
Focus ............................................................................................................................................................................ 13
2-4.
Screen (G2) .................................................................................................................................................................. 13
2-5.
White Balance Adjustments .......................................................................................................................................... 13
3.
SAFETY RELATEDADJUSTMENTS
3-1.
R530, R531 Confirmation Method (HV Hold-Down Confirmation and Readjustments) .......................................... 14
3-2.
B+ Voltage Confirmation and Adjustment ..................................................................................................................... 14
4.
CIRCUIT ADJUSTMENTS
4-1.
Setting the Service Adjustment Mode .......................................................................................................................... 15
4-2.
Memory Write Confirmation Method .............................................................................................................................. 15
4-3.
Adjust Buttons and Indicators ...................................................................................................................................... 15
4-4.
Adjustment Items ........................................................................................................................................................... 16
4-5.
Feature ID Map .............................................................................................................................................................. 21
4-6.
Program Palette Settings ............................................................................................................................................... 22
4-7.
A Board Adjustments .................................................................................................................................................... 22
5.
DIAGRAMS
5-1.
Block Diagram ............................................................................................................................................................... 25
5-2.
Circuit Board Location .................................................................................................................................................. 33
5-3.
Printed Wiring Boards and Schematic Diagrams ......................................................................................................... 33
·
A Board .................................................................................................................................................................... 34
·
UX (MAIN) Board ...................................................................................................................................................... 41
·
UX (PIP) Board ......................................................................................................................................................... 45
·
AK Board .................................................................................................................................................................. 49
·
HA Board .................................................................................................................................................................. 50
·
G Board .................................................................................................................................................................... 51
·
GA Board .................................................................................................................................................................. 55
·
HX Board .................................................................................................................................................................. 58
·
WA Board ................................................................................................................................................................. 59
·
T Board ..................................................................................................................................................................... 61
·
C Board .................................................................................................................................................................... 63
·
HB Board .................................................................................................................................................................. 64
5-4.
Semiconductors ............................................................................................................................................................ 65
6.
EXPLODED VIEW
6-1.
Chassis ......................................................................................................................................................................... 66
6-2.
Picture Tube .................................................................................................................................................................. 67
7.
ELECTRICAL PARTS LIST ................................................................................................................................................... 68
TABLE OF CONTENTS


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KV-32FV16/32FV26/34FV16/34FV16C/34FX260/34FX260C
WARNINGS AND CAUTIONS
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.
WARNING!!
AN ISOLATION TRANSFORMER SHOULD BE USED DURING
ANY SERVICE TO AVOID POSSIBLE SHOCK HAZARD,
BECAUSE OF LIVE CHASSIS. THE CHASSIS OF THIS
RECEIVER IS DIRECTLY CONNECTED TO THE AC POWER
LINE.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY SHADINGAND MARK
ON
THE SCHEMATIC DIAGRAMS, EXPLODED VIEWS, AND IN
THE PARTS LIST ARE CRITICAL FOR SAFE OPERATION.
REPLACE THESE COMPONENTS WITH SONY PARTS
WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS
MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.
CIRCUITADJUSTMENTS THAT ARE CRITICAL FOR SAFE
OPERATION ARE IDENTIFIED IN THIS MANUAL. FOLLOW
THESE
PROCEDURES
WHENEVER
CRITICAL
COMPONENTSAREREPLACEDORIMPROPEROPERATION
IS SUSPECTED.
ATTENTION!!
APRES AVOIR DECONNECTE LE CAP DE L'ANODE, COURT-CIRCUITER
L'ANODE DU TUBE CATHODIQUE ET CELUI DE L'ANODE DU CAP AU
CHASSIS METALLIQUE DE L'APPAREIL, OU AU COUCHE DE CARBONE
PEINTE SUR LE TUBE CATHODIQUE OU AU BLINDAGE DU TUBE
CATHODIQUE.
ATTENTION!!
AFIN D'EVITER TOUT RESQUE D'ELECTROCUTION PROVENANT D'UN
CHÁSSISSOUSTENSION,UNTRANSFORMATEURD'ISOLEMENTDOITETRE
UTILISÉ LORS DE TOUT DÉPANNAGE. LE CHÁSSIS DE CE RÉCEPTEUR EST
DIRECTEMENTRACCORDÉÀL'ALIMENTATIONSECTEUR.
ATTENTION AUX COMPOSANTS RELATIFS A LA SECURITE!!
LES COMPOSANTS IDENTIFIES PAR UNE TRAME ET PAR UNE MARQUE
SUR LES SCHEMAS DE PRINCIPE, LES VUES EXPLOSEES ET LES
LISTES DE PIECES SONT D'UNEIMPORTANCE CRITIQUE POUR LA
SECURITE DU FONCTIONNEMENT. NE LES REMPLACER QUE PAR DES
COMPOSANTS SONY DONT LE NUMERO DE PIECE EST INDIQUE DANS
LE PRESENT MANUELOU DANS DES SUPPLEMENTS PUBLIES PAR SONY.
LES REGLAGES DE CIRCUIT DONT L'IMPORTANCE EST CRITIQUE POUR
LASECURITEDUFONCTIONNEMENTSONTIDENTIFIESDANSLEPRESENT
MANUEL. SUIVRE CES PROCEDURES LORS DE CHAQUE REMPLACEMENT
DE COMPOSANTS CRITIQUES, OU LORSQU'UN MAUVAIS
FONTIONNEMENTSUSPECTE.
SELF-DIAGNOSTIC FUNCTION
The units in this manual contain a self-diagnostic function. If an error occurs, the STANDBY/TIMER LED will automatically begin to
flash. The number of times the LED flashes translates to a probable source of the problem. A definition of the STANDBY/TIMER LED
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.
Diagnostic Test Indicators
When an error occurs, the STANDBY/TIMER LED will flash a set number of times to indicate the possible cause of the problem. If there
is more than one error, the LED will identify the first of the problem areas.
Results for all of the following diagnostic items are displayed on screen. No error has occurred if the screen displays a "0".
Diagnostic Item
Description
No. of Times
STANDBY/TIMER
LED Flashes
Self-diagnostic Display/
Diagnostic Result
Probable Cause
Location
Detected Symptoms
Power does not turn on
Does not light
N/A
· Power cord is not plugged in.
· Fuse is burned out. (F601) (A Board)
· Power does not come on.
· No power is supplied to the TV.
· AC power supply is faulty.
+B overcurrent (OCP)*
N/A
N/A
· H.OUT (Q502) is shorted. (A Board)
· IC1701 is shorted. (C Board)
· Power does not come on.
· Load on power line is shorted.
+B overvoltage (OVP)*
N/A
N/A
· IC643 or T603 is open. (G Board)
· IC6003 or PH6001 is open (GA Board)
· Power does not come on.
V-STOP*
4 times
4:0 or 4:1
· +12V is not supplied. (A Board)
· IC502 is faulty. (A Board)
· Has entered standby state after horizontal raster.
· Vertical deflection pulse is stopped.
· Power line is shorted or power supply is stopped.
IK (AKB)
5 times
5:0 or 5:1
· Video OUT (IC502) is faulty. (A Board)
· IC355 is faulty. (A Board)
· Screen (G2) is improperly adjusted.**
· No raster is generated.
· CRT cathode current detection reference
pulse output is small.
* 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.
** Refer to Screen (G2) Adjustments in Section 2- 4 of this manual.


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KV-32FV16/32FV26/34FV16/34FV16C/34FX260/34FX260C
STANDBY/TIMER LED
Display of Standby/Timer LED Flash Count
4 times
5 times
LED ON 0.3 sec.
LED OFF 0.3 sec.
LED OFF
3 sec.
Diagnostic Item
Flash Count*
V-STOP
4 times
IK (AKB)
5 times
*One flash count is not used for self-diagnostic.
Stopping the Standby/Timer LED 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.
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 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
Sound volume
Note that this differs from entering the service mode (sound volume
).
Power ON
+
Self-Diagnostic Screen Display
2: +B OCP
N/A
3: +B OVP
N/A
4: VSTOP
0
5: AKB
1
101: WDT
24
Numeral "0" means that no fault was detected.
Numeral "1" means a fault was detected one time only.
SELF DIAGNOSIS