KP-48V85, KP-53V85, KP-61V85 — Sony TV Service Manual (repair manual)

Model
KP-48V85 KP-53V85 KP-61V85
Pages
105
Size
10.89 MB
Type
PDF
Document
Service Manual
Brand
Device
TV
File
kp-48v85-kp-53v85-kp-61v85.pdf
Date

View Sony KP-48V85 / KP-53V85 / KP-61V85 Service Manual online

CHASSIS
SERVICE MANUAL
MODEL
COMMANDER
DEST. CHASSIS NO.
––––––
 ––––––––––––
–––––
–––––––––––
MODEL
COMMANDER
DEST. CHASSIS NO.
––––––
 ––––––––––––
–––––
–––––––––––
 Please file according to model size. .......
RA-3A
KP-48V85
RM-Y905
US
SCC-P43GA
KP-48V85
RM-Y905 Canadian
SCC-P43GA
KP-53V85
RM-Y905
US
SCC-P43FA
KP-53V85
RM-Y905 Canadian
SCC-P43FA
48
COLOR REAR VIDEO PROJECTOR
53
KP-61V85
RM-Y905
US
SCC-P43HA
KP-61V85
RM-Y905 Canadian
SCC-P43HA
61
TV
2
5
8
0
1
4
7
3
6
9
ENTER
JUMP
MENU
RESET
VOL
CH
POWER
MUTING
DVD/VTR SAT/CABLE
TV
TV
PICTURE
MODE
CODE SET
DISPLAY
ANT
TV/VIDEO
FREEZE
AUDIO
GUIDE
ACTIVE
INDEX
DVD/
VTR
SAT/
CABLE
FUNCTION
VTR123DVD/MDP
KP-48V85/53V85/61V85
RM-Y905
– 2 –
KP-48V85/53V85/61V85
RM-Y905
RM-Y905 RM-Y905
SPECIFICATIONS
Projection system
3 picture tubes, 3 lenses, horizontal in-line system
Picture tube
7-inch high-brightness monochrome tubes (6.3 raster size),
with optical coupling and liquid cooling system
Projection lenses
High performance, large diameter hybrid lens F1.05
Television system
American TV standard
Channel coverage
VHF: 2–13/UHF: 14 –69/CATV: 1 – 125
Antenna
75 ohm external terminal for VHF/UHF
Screen size (measured diagonally)
48 inches (KP-48V85)
53 inches (KP-53V85)
61 inches (KP-61V85)
Inputs/outputs
VIDEO 1/3 IN
VIDEO 2 INPUT
S VIDEO IN (4-pin mini DIN):
Y: 1 Vp-p, 75-ohms unbalanced, sync negative
C: 0.286 Vp-p (Burst signal), 75 ohms
VIDEO (phono jack): 1 Vp-p, 75-ohms unbalanced, sync
negative
AUDIO (phono jacks): 500 mVrms (100% modulation),
Impedance: 47 kilohms
VIDEO 4/5 IN
Y: 1 Vp-p, 75 ohms, sync negative
PB: 0.7 Vp-p, 75 ohms
PR: 0.7 Vp-p, 75 ohms
AUDIO (phono jacks): 500 mVrms (100% modulation),
Impedance: 47 kilohms
TV OUT/MONITOR OUT
VIDEO (phono jack): 1 Vp-p, 75-ohms unbalanced, sync
negative
AUDIO (phono jacks): 500 mVrms (100% modulation),
Impedance: 470 ohms
AUDIO (VAR/FIX) OUT (phono jacks): 500 mVrms (100%
modulation),  Impedance: 470 ohms
S-LINK: minijacks
CONTROL S OUT: minijack
Speaker
Tweeter: 66 mm (2 5/8”) x 2
Woofer: 160 mm (6 3/8”) x 2
Speaker output
20 W x 2
Power requirement
120 V AC, 60 Hz
Power consumption
In use (Max.): 170 W
In standby: 1 W
Dimensions (W/H/D)
1,105 x 1,338 x 579 mm (43 1/2 x 52 5/8 x 22 3/4 inches)
(KP-48V85)
1,216 x 1,417 x 632 mm (47 7/8 x 55 3/4 x 24 7/8 inches)
(KP-53V85)
1,370 x 1,560 x 670 mm (54 x 61 3/8 x 26 3/8 inches)
(KP-61V85)
Mass
68.8 kg (151 lbs 11 oz) (KP-48V85)
76.0 kg (167 lbs 9 oz) (KP-53V85)
93.6 kg (206 lbs 6 oz) (KP-61V85)
Supplied accessories
Remote control RM-Y905 (1)
Batteries (2) size AA (R6)
Optional accessories
Connecting cables
RK-G34, RK-74A, RK-G69HG, VMC-10HG,
VMC-720M, VMC-810S/820S, YC-15V/30V
U/V mixer EAC-66
Design and specifications are subject to change without notice.
– 3 –
KP-48V85/53V85/61V85
RM-Y905
RM-Y905 RM-Y905
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
– 4 –
KP-48V85/53V85/61V85
RM-Y905
RM-Y905 RM-Y905
SELF DIAGNOSIS FUNCTION
* : 000 the range of values for number of operations is 000-255.  For 256 or higher there is
no count up and the number remains at 255.
3.
Blinking count display of TIMER/STANDBY indicator
< FRONT PANEL >
TIMER/STANDBY indicator
Lamp OFF : 
3.0 seconds
Lamp ON : 0.3 seconds
Lamp OFF : 0.3 seconds
Release of TIMER/STANDBY indicator blinking.
The TIMER/STANDBY indicator blinking display is released by turning OFF the power switch 
on the TV main unit or removing the plug from the power.
* One blink is not used for self-diagnosis.
•EXAMPLE
<Diagnosis Items>  <Number of Blinks>
• +B overcurrent  
2 times
• +B overvoltage
3 times
• Vertical deflection stop
4 times
TV/VIDEO
FLASH FOCUS
VOLUME
POWER
TIMER/STAND BY
+
CHANNEL
+
1.
Summary of Self-Diagnosis Function
This device includes a self-diagnosis function.
In case of abnormalities, the TIMER/STANDBY indicator automatically blinks.  It is possible to predict the abnormality location
by the number of blinks.  The Instruction Manual describes blinking of the TIMER/STANDBY indicator.
If the symptom is not reproduced sometimes in case of a malfunction, there is recording of whether a malfunction was generated
or not.  Operate the remote command to confirm the matter on the screen and to predict the location of the abnormality.
2.
Diagnosis Items and Prediction of Malfunction Location
When a malfunction occurs the TIMER/STANDBY indicator only blinks for one of the following diagnosis items.  In case of two
or more malfunctions, the item which first occurred blinks.  If the malfunctions occurred simultaneously, the item with the lower
blink count blinks first.
The screen display displays the results regarding all the diagnosis items listed below.  The display “ 0 ” means that no malfunc-
tions occurred.
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Download Sony KP-48V85 / KP-53V85 / KP-61V85 Service Manual (Repair Manual)

Here you can view online or download Sony KP-48V85 / KP-53V85 / KP-61V85 Service Manual in pdf. This Service Manual can help you recover, restore, fix, disassemble and repair Sony KP-48V85 / KP-53V85 / KP-61V85 TV. Information contained in Sony KP-48V85 / KP-53V85 / KP-61V85 service manual (repair manual) typically includes:

  • Disassembly, troubleshooting, programming, maintenance, remote, adjustment, installation and setup instructions.
  • Schematics, wiring and block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Parts list (bill of materials).