KP-51HW40, KP-57HW40 - Sony TV Service Manual (repair manual)

kp-51hw40, kp-57hw40 service manual
Model
KP-51HW40 KP-57HW40
Pages
127
Size
12.83 MB
Type
PDF
Document
Service Manual
Brand
Device
TV
File
kp-51hw40-kp-57hw40.pdf
Date

Read Sony KP-51HW40 / KP-57HW40 Service Manual online

CHASSIS
SERVICE MANUAL
MODEL
COMMANDER
DEST. CHASSIS NO.
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 ––––––––––––
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MODEL
COMMANDER
DEST. CHASSIS NO.
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 ––––––––––––
–––––
–––––––––––
RA-6
KP-51HW40
RM-Y909
US
SCC-P65G-A
KP-51HW40
RM-Y909 Canadian
SCC-P65G-A
KP-57HW40
RM-Y909
US
SCC-P65F-A
KP-57HW40
RM-Y909 Canadian
SCC-P65F-A
COLOR REAR VIDEO PROJECTOR
RM-Y909
KP-51HW40/57HW40
– 2 –
KP-51HW40/57HW40
RM-Y909
RM-Y909
SAFETY CHECK-OUT
( US model only )
After correcting the original service problem, perfom the follow-
ing safety checks before releasing the set to the customer:
l.
Check the area of your repair for unsoldered or poorly-sol-
dered connections. Check the entire board surface for solder
splashes and bridges.
2. Check the interboard wiring to ensure that no wires are
“pinched” or contact high-wattage resistors.
3. Check that all control knobs, shields, covers, ground straps,
and mounting hardware have been replaced. Be absolutely
certain that you have replaced all the insulators.
4. Look for unauthorized replacement parts, particularly tran-
sistors, that were installed during a previous repair. Point them
out to the customer and recommend their replacement.
5. Look for parts which, through functioning, show obvious
signs of deterioration. Point them out to the customer and
recom mend their replacement.
6. Check the line cords for cracks and abrasion. Recommend
the replacement of any such line cord to the customer.
7. Check the condition of the monopole antenna (if any). Make
sure the end is not broken off, and has the plastic cap on it.
Point out the danger of impalement on a broken antenna to
the customer, and recommend the antenna’s replacement.
8. Check the B+ and HV to see they are at the values specified.
Make sure your instruments are accurate;be suspicious of
your HV meter if sets always have low HV.
9. Check the antenna temminals, metal trim, “metallized” knobs,
screws, and all other exposed metal parts for AC leakage.
Check leakage as described below.
LEAKAGE TEST
The AC leakage from any exposed metal part to earth ground and
from all exposed metal parts to any exposed metal part having a
return to chassis, must not exceed 0.5mA (500 microampers) . Leak-
age current can be measured by any one of three methods.
1. A commercial leakage tester, such as the Simpson 229 or
RCA WT-540A. Follow the manufacturers’ instructions to
usc these instruments.
2. A battery-operated AC milliammeter. The Data Precision 245
digital multimeter is suitable for this job.
3. Measuring the voltage drop across a resistor by means of a
VOM or battery-operated AC voltmeter. The “limit” indica-
tion is 0.75V, so analog meters must have an accurate low-
voltage scale. The Simpson 250 and Sanwa SH-63Trd are
examples of a passive VOM that is suitable. NearIy all bat-
tery operated digital multimeters that have a 2V AC range
are suitable. (See Fig. A)
HOW TO FIND A GOOD EARTH GROUND
A cold-water pipe is guaranteed earth ground;the cover-plate re-
taining screw on most AC outlet boxes is also at earth ground. If
the retaining screw is to be used as your earth-ground, verify that it
is at ground by measuring the resistance between it and a cold-
water pipe with an ohmmeter. The reading should be zero ohms. If
a cold-water pipe is not accessible, connect a 60-l00 watts trouble
light (not a neon lamp) between the hot side of the receptacle and
the retaining screw. Try both slots, if necessary, to locate the hot
side of the line, the lamp should light at normal brilliance if the
screw is at ground potential. (See Fig. B)
To Exposed Metal
Parts on Set
AC
voltmeter
(0.75V)
1.5k 
Earth Ground
Fig. A.  Using an AC voltmeter to check AC leakage.
1.5 
µ
 F
Fig. B.  Checking for earth ground.
Trouble Light
AC Outlet Box
Ohmmeter
Cold-water Pipe
– 3 –
KP-51HW40/57HW40
RM-Y909
RM-Y909
(CAUTION)
THESE  SERVICING INSTRUCTIONS ARE  FOR  USE BY QUALIFIED 
SERVICE PERSONNEL ONLY. TO REDUCE THE RISK OF ELECTRIC 
SHOCK, DO  NOT PERFORM  ANY SERVICING  OTHER  THAN THAT 
CONTAINED   IN  THE  OPERATING  INSTRUCTIONS  UNLESS  YOU 
ARE QUALIFIED TO DO SO.
WARNING!!
AN  ISOLATION TRANSFORMER  SHOULD  BE  USED  DURING
ANY  SERVICE  TO  AVOID  POSSIBLE  SHOCK  HAZARD,  BE-
CAUSE 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 NUM-
BERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLE-
MENTS PUBLISHED BY SONY. CIRCUIT ADJUSTMENTS THAT
ARE CRITICAL TO SAFEOPERATION ARE IDENTIFIED IN THIS
MANUAL. FOLLOW THESE PROCEDURES WHENEVER CRITI-
CAL COMPONENTS ARE REPLACED OR IMPROPER OPERA-
TION IS SUSPECTED.
(ATTENTION)
ATTENTION!!
AFIN  D’EVITER  TOUT  RISQUE  DELECTROCUTION  PROVE-
NANT D’UN CHÁSSIS SOUS TENSION, UN TRANSFORMATEUR
D’ISOLEMENT  DOIT  ETRE  UTILISÉ  LORS  DE TOUT  DEPAN-
NAGE.
LE  CHÁSSIS  DE  CE  RECEPTEUR  EST  DIRECTEMENT  RAC-
CORDÉ Á L’ALIMENTATION SECTEUR.
ATTENTION AUX COMPOSANTS RELATIFS ÁLA
SÉCURITÉ!!
LES COMPOSANTS IDENTIFIÉS PAR UNE TRAME ET PAR UNE
MAPQUE ! SUR LES SCHÉMAS DE PRINCIPE, LES VUES EX-
PLOSÉES ET LES LISTES DE PIECES CONT D’UNEIMPORTANCE
CRITIQUE POUR LA SÉCURITÉ DU FONCTIONNEMENT. NE LES
REMPLACER  QUE  PAR  DES  COMPOSANTS  SONY  DONT  LE
NUMÉRO DE PIÉCE EST INDIQUÉ DANS LE PRÉSENT MAN-
UEL OU DANS DES SUPPLÉMENTS PUBLIÉS PAR SONY. LES
RÉGLAGES DE CIRCUIT DONT L’IMPORTANCE EST CRITIQUE
POUR LA SÉCURITÉ DU FONCTIONNEMENT SONT IDENTIFIES
DANS  LE  PRÉSENT  MANUEL.  SUIVRE  CES  PROCÉDURES
LORS DE CHAQUE REMPLACEMENT DE COMPOSANTS CRI-
TIQUES,  OU  LORSQU’UN  MAUVAIS  FONCTIONNEMENT  EST
SUSPECTÉ.
CES INSTRUCTIONS DE  SERVICE  SONT À  L’USAGE DU PERSONNEL 
DE SERVICE QUALIFIÉ  SEULEMENT. POUR PRÉVENIR LE RISQUE DE 
CHOC ÉLECTRIQUE, NE  PAS FAIRE L’ENTRETIEN  AUTRE QUE CELUI 
CONTENU  DANS  LE  MODE  D’EMPLOI  À  MOINS  QUE VOUS SOYEZ 
QUALIFIÉ FAIRE AINSI.
– 4 –
KP-51HW40/57HW40
RM-Y909
RM-Y909
TABLE OF CONTENTS
Section
Title
Page
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––––
––––
Section
Title
Page
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––––
––––
1. SELF DIAGNOSIS FUNCTION .............................
5
2. DISASSEMBLY
2-1.
REAR BOARD REMOVAL ....................................... 8
2-2.
CHASSIS ASSY REMOVAL ..................................... 8
2-3.
SERVICE POSITION ................................................. 8
2-4.
H2 BOARD REMOVAL ............................................. 8
2-5.
H1 BOARD REMOVAL ............................................. 9
2-6.
H3 BOARD REMOVAL ............................................. 9
2-7.
MIRROR COVER REMOVAL ................................... 9
2-8.
BEZNET ASSY REMOVAL ...................................... 9
2-9.
H4 BOARD AND S BOARD REMOVAL ............... 10
2-10.
AD BOARD AND B BOARD REMOVAL .............. 10
2-11.
G BOARD REMOVAL ............................................. 10
2-12.
A BOARD, D BOARD AND
U BOARD REMOVAL ............................................. 10
2-13.
PICTURE TUBE REMOVAL ................................... 11
2-14.
HIGH-VOLTAGE CABLE INSTALLATION AND
REMOVAL ................................................................ 11
3. SET-UP ADJUSTMENTS
3-2.
SCREEN (G2) ADJUSTMENT
(FINE ADJUSTMENT) ............................................ 12
3-1.
SCREEN VOLTAGE ADJUSTMENT
(COARSE ADJUSTMENT) ..................................... 12
3-3.
DEFLECTION YOKE TILT ADJUSTMENT .......... 12
3-4.
 FOCUS LENS ADJUSTMENT ............................... 12
3-6.
2-POLE MAGNET ADJUSTMENT ........................ 13
3-5.
FOCUS VR ADJUSTMENT ..................................... 13
3-7.
CENTERING MAGNET ADJUSTMENT ............... 13
3-8.
4-POLE MAGNET ADJUSTMENT ........................ 13
3-9.
DEFOCUS ADJUSTMENT (BLUE) ....................... 13
3-10
.ELECTRICAL ADJUSTMENT BY REMOTE
COMMANDER ........................................................ 14
4. CIRCUIT ADJUSTMENTS
4-1.
P & P SUB CONTRAST
ADJUSTMENT (VIDEO) (SCON) .......................... 31
4-2.
P & P SUB CONTRAST
ADJUSTMENT (RF) (SCON) .................................. 31
4-3.
 P & P SUB-HUE AND
SUB-COLOR  ADJUSTMENT (SHUE, SCOL) ...... 31
4-4.
P & P SUB-HUE AND
SUB-COLOR ADJUSTMENT (SHUE, SCOL) ....... 31
4-5.
BLUE OFFSET ADJUSTMENT .............................. 32
5. SAFETY RELATED ADJUSTMENTS
5-1.
HV REGULATION CIRCUIT CHECK AND
ADJUSTMENT ......................................................... 33
5-2.
HV HOLD DOWN CIRCUIT OPERATION
CHECK AND ADJUSTMENT ................................. 33
5-3.
+B MAX VOLTAGE CONFIRMATION .................. 33
5-4.
+B OVP CONFIRMATION ...................................... 33
6. DIAGRAMS
6-1.
BLOCK DIAGRAM (1) ............................................ 34
BLOCK DIAGRAM (2) ............................................ 35
BLOCK DIAGRAM (3) ............................................ 36
BLOCK DIAGRAM (4) ............................................ 37
BLOCK DIAGRAM (5) ............................................ 38
BLOCK DIAGRAM (6) ............................................ 39
BLOCK DIAGRAM (7) ............................................ 40
BLOCK DIAGRAM (8) ............................................ 41
BLOCK DIAGRAM (9) ............................................ 42
BLOCK DIAGRAM (10) .......................................... 43
BLOCK DIAGRAM (11) .......................................... 44
6-2. CIRCUIT BOARDS LOCATION ................................. 45
6-3. SCHEMATIC DIAGRAMS ........................................... 45
6-4. PRINTED WIRING BOARDS ...................................... 74
6-5. WAVEFORMS ............................................................... 88
6-6. IC BLOCK DIAGRAMS ............................................... 90
6-7. SEMICONDUCTORS ................................................... 94
7. EXPLODED VIEWS
7-1.
COVER ..................................................................... 95
7-2.
CHASSIS .................................................................. 96
7-3.
PICTURE TUBE ....................................................... 97
8. ELECTRICAL  PARTS  LIST ................................
98
Page of 127
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Download Sony KP-51HW40 / KP-57HW40 Service Manual (Repair Manual)

Here you can read online and download Sony KP-51HW40 / KP-57HW40 Service Manual in PDF. KP-51HW40 / KP-57HW40 service manual will guide through the process and help you recover, restore, fix, disassemble and repair Sony KP-51HW40 / KP-57HW40 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.