Sony KD-27FS170, KD-32FS170, KD-36F User manual

TRINITRON®COLOR TELEVISION
SERVICE MANUAL BA-6 CHASSIS
MODEL NAME REMOTE COMMANDER DESTINATION CHASSIS NO.
9-965-996-01
KD-27FS170 RM-YD006 US SCC-S61Y-A
KD-32FS170 RM-YD006 US SCC-S81A-A
KD-36FS170 RM-YD006 US SCC-S81B-A
HISTORY INFORMATION FOR THE FOLLOWING MANUAL:
ORIGINAL MANUAL ISSUE DATE: 2/2006
REVISION DATE SUBJECT
2/2006 No revisions or updates are applicable at this time.

TRINITRON®COLOR TELEVISION
SERVICE MANUAL BA-6 CHASSIS
MODEL NAME REMOTE COMMANDER DESTINATION CHASSIS NO.
9-965-996-01
KD-27FS170 RM-YD006 US SCC-S61Y-A
KD-32FS170 RM-YD006 US SCC-S81A-A
KD-36FS170 RM-YD006 US SCC-S81B-A
Self Diagnosis
Supported model
KD-32FS170 RM-YD006

KD-27FS170/32FS170/36FS170
KD-27FS170/32FS170/36FS170
3
TABLE OF CONTENTS
SECTION TITLE PAGE SECTION TITLE PAGE
Specifications ........................................................................... 4
Warnings and Cautions ............................................................ 5
Safety Check-Out ..................................................................... 6
Self-Diagnostic Function .......................................................... 7
SECTION 1: DISASSEMBLY................................................................. 9
1-1. Rear Cover Removal........................................................ 9
1-2. Chassis Assembly Removal ............................................. 9
1-3. Service Position.............................................................. 10
1-4. Picture Tube Removal .....................................................11
Anode Cap Removal Procedure......................................11
Cable Wire Dressing ...................................................... 12
KD-27FS170 Models Only....................................... 12
KD-32FS170 Models Only....................................... 19
KD-36FS170 Models Only....................................... 25
SECTION 2: SET-UP ADJUSTMENTS................................................ 31
2-1. Beam Landing ................................................................ 31
2-2. Convergence .................................................................. 32
2-3. Focus.............................................................................. 33
2-4. Screen (G2).................................................................... 34
SECTION 3: SAFETY RELATED ADJUSTMENTS............................. 35
3-1.
X R529, R530, R531, R577 Confirmation Method
(HV Hold-Down Confirmation) and Readjustments........ 35
3-2. B+ Voltage Confirmation and Adjustment....................... 35
SECTION 4: CIRCUIT ADJUSTMENTS.............................................. 36
4-1. Remote Adjustment Buttons and Indicators ................... 36
4-2. Accessing the Service Adjustment Mode ....................... 36
4-3. Confirming Service Adjustment Changes....................... 37
4-4. White Balance Adjustments............................................ 38
4-5. A Board Adjustments ...................................................... 38
4-6. Service Data Lists .......................................................... 41
KD-27FS170 Models Only ............................................. 41
KD-32FS170 Models Only ............................................. 57
KD-36FS170 Models Only ............................................. 70
SECTION 5: DIAGRAMS..................................................................... 81
5-1. Circuit Boards Location .................................................. 81
5-2. Printed Wiring Board
and Schematic Diagram Information .............................. 81
5-3. Block Diagrams and Schematics.................................... 82
Signal Flow Block Diagram ............................................ 82
A Board Schematic Diagram (1 of 3) ............................. 83
A Board Schematic Diagram (2 of 3) ............................. 84
A Board Schematic Diagram (3 of 3) ............................. 85
CV Board Schematic Diagram ....................................... 87
HS Board Schematic Diagram ....................................... 89
M Board Schematic Diagram (1 of 5)............................. 90
M Board Schematic Diagram (2 of 5)............................. 91
M Board Schematic Diagram (3 of 5)............................. 92
M Board Schematic Diagram (4 of 5)............................. 93
M Board Schematic Diagram (5 of 5)............................. 94
VD Board Schematic Diagram
(KD-32FS170/36FS170 ONLY) ............................... 96
5-4. Semiconductors.............................................................. 97
SECTION 6: EXPLODED VIEWS ........................................................ 98
6-1. Chassis........................................................................... 98
6-2. Picture Tube ................................................................... 99
SECTION 7: ELECTRICAL PARTS LIST.......................................... 100

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SPECIFICATIONS
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; PB: 0.7 Vp-p, 75 ohms;
PR Vp-p, 75 ohms.
4) 500 m Vrms (100% modulation), Impedance: 47 kilohms
5) This specification is the maximum wattage.
Design and specifications are subject to change without notice.
Television system
American TV standard, NTSC
ATSC Compliant 8VSB, ATSC (8VSB terrestrial)
Channel coverage
Analog: VHF: 2-69/CATV: 1-125
Digital: VHF: 2-69
Antenna
75-ohm external antenna terminal for VHF/UHF
Picture tube
FD Trinitron®tube
Visible screen size
27-inch picture measured diagonally
(KD-27FS170 Only)
32-inch picture measured diagonally
(KD-32FS170 Only)
36-inch picture measured diagonally
(KD-36FS170 Only)
Actual screen size
29-inch picture measured diagonally
(KD-27FS170 Only)
34-inch picture measured diagonally
(KD-32FS170 Only)
38-inch picture measured diagonally
(KD-36FS170 Only)
Supplied Accessories
Remote Commander RM-YD006
Two Size AA (R6) Batteries
Optional Accessories
TV Stand SU-27FS2 (KD-27FS170 Only)
SU-32FS2 (KD-32FS170 Only)
SU-36FS2 (KD-36FS170 Only)
KD-27FS170 KD-32FS170 KD-36FS170
Power Requirements 120V, 60Hz 120V, 60Hz 120V, 60Hz
Number of Inputs/Outputs
Video 1)
S Video 2)
Y,PB, PR
3)
Audio 4)
ATSC
RF 5)
S
p
eaker Out
p
ut
(
W
)
Power Consumption (W)
In Use (Max) 130W 160W 160W
In Standby (Max) 5) <1W <1W <1W
Dimensions (W x H x D)
mm 768 x 590 x 497 mm 898 x 696 x 576 mm 985 x 776 x 633 mm
in 301/4 x 23 1/4 x 19 5/8 in 353/8 x 27 3/8 x 22 5/8 in 383/4 x 30 1/2 x 24 7/8 in
Mass
kg 44.5 kg 72 kg 98 kg
lbs 98 lbs 158.5 lbs 215.5 lbs
1
1
5W x 2
2
1
1
3
Manufactured under license from Dolby
Laboratories Licensing Corporation.
Dolby and the double-D symbol are
trademarks of Dolby Laboratories.
As an ENERGY STAR ®Partner, Sony
Corporation has determined that this
product meets the ENERGY STAR ®
guidelines for energy efficiency.
ENERGY STAR®is a U.S. registered
mark.

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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 shading and ! 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. Circuit adjustments that are critical for safe operation are identified in this manual. Follow these procedures whenever critical
components are replaced or improper operation 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 la couche de carbone peinte sur le tube cathodique ou au blindage du tube cathodique.
Afin d’eviter tout risque d’electrocution provenant d’un chássis sous tension, un transformateur d’isolement doit etre utilisé lors de tout
dépannage. Le chássis de ce récepteur est directement raccordé à l’alimentation du secteur.
! 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’une importance critique pour la securite du fonctionnement. Ne les remplacer que par des composants Sony dont le numero
de piece est indique dans le present manuel ou dans des supplements publies par Sony. Les reglages de circuit dont l’importance est
critique pour la securite du fonctionnement sont identifies dans le present manuel. Suivre ces procedures lors de chaque remplacement
de composants critiques, ou lorsqu’un mauvais fonctionnement suspecte.

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SAFETY CHECK-OUT
After correcting the original service problem, perform the following
safety checks before releasing the set to the customer:
1. Check the area of your repair for unsoldered or poorly soldered
connections. Check the entire board surface for solder splashes and
bridges.
2. Check the interboard wiring to ensure that no wires are “pinched” or
touching 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 transistors,
that were installed during a previous repair. Point them out to the
customer and recommend their replacement.
5. Look for parts which, though functioning, show obvious signs of
deterioration. Point them out to the customer and recommend 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 B+ and HV to see if they are specified values. Make sure
your instruments are accurate; be suspicious of your HV meter if
sets always have low HV.
8. Check the antenna terminals, 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 0.5 mA (500 microamperes). Leakage 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 use these
instructions.
2. A battery-operated AC milliampmeter. 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” indication is 0.75 V,
so analog meters must have an accurate low voltage scale. The
Simpson’s 250 and Sanwa SH-63TRD are examples of passive
VOMs that are suitable. Nearly all battery-operated digital
multimeters that have a 2 VAC range are suitable (see Figure A).
How to Find a Good Earth Ground
A cold-water pipe is a guaranteed earth ground; the cover-plate
retaining 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- to 100-watt 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 on
the line; the lamp should light at normal brilliance if the screw is at
ground potential (see Figure B).
To Exposed Metal
Parts on Set
0.15 F 1.5 K ΩAC
Voltmeter
(0.75 V)
Earth Ground
Trouble Light
AC Outlet Box Ohmmeter
Cold-water Pipe
Figure A. Using an AC voltmeter to check AC leakage. Figure B. Checking for earth ground.

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7
Detected Symptoms
SELF-DIAGNOSTIC FUNCTION
*If a +B overcurrent is detected, stoppage of the vertical deflection is detected simultaneously. The symptom that is diagnosed first by the mircrocontroller
is displayed on the screen.
**Refer to Screen (G2) Adjustments in Section 2-4. of this manual.
Display of Standby/Timer LED Flash Count
2 times
4 times
5 times
LED ON 0.3 sec.
LED OFF 0.3 sec. LED OFF
3 sec.
Standby/Timer LED
Diagnostic Item Flash Count*
+B Overcurrent 2 times
I-Prot 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 Diagnosis
Supported model
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”.
Power does not turn on
+B overcurrent (OCP)*
I-Prot
IK (AKB)
Does not light
2 times
4 times
5 times
2:0 or 2:1
4:0 or 4:1
5:0 or 5:1
• Power cord is not plugged in.
• Fuse is burned out (F601). (A Board)
• H.OUT (Q502) is shorted. (A Board)
• IC702 is shorted. (CV Board)
• +13V is not supplied. (A Board)
• IC561 is faulty. (A Board)
• IC001 is faulty. (A Board)
• Screen (G2) is improperly adjusted.**
No. of times
STANDBY/ TIMER
lamp flashes
Diagnostic Item Descrip-
tion
Self-Diagnositc
Display/ Diagnos-
tic Result
Probable Cause Location
• 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.

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8
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 - POWER
Self-Diagnostic Screen Display
SELF DIAGNOSTIC
2: +B OCP 0
3: +B OVP N/A
4: VSTOP 0
Numeral “0” means that no fault was detected.
5: AKB 1 Numeral “1” means a fault was detected one time only.
101: WDT N/A
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 when the diagnostic screen is displayed, as shown below:
Channel 8
ENTER
Quitting the Self-Diagnostic Screen
To quit the entire self-diagnostic screen, turn off the power switch on the Remote Commander or the main unit.
Self-Diagnostic Circuit
ABOARD
IC001
Y/CHROMA JUNGLE
A BOARD
IC561
V. OUT
A BOARD
IC001
SYSTEM
A BOARD
IC002
MEMORY
IK-AKBIN
FROM
CV BOARD
IC702PIN 5
I-HLDWN
FROM
A BOARD
IC501
PIN 1
72O-LED
REF I-Prot
IO-BDAT
BDA
DISPLAY
51 378
1
535
+B overcurrent (OCP)
Occurs when an overcurrent on the +B (135V) line is detected by pin 72 of IC001 (A Board). If the voltage of pin 72 of IC001 (A Board) is less than 1V
when V.SYNC is more than seven verticals in a period, the unit will automatically turn off.
I-Prot
Occurs when an absence of the vertical deflection pulse is detected by pin 78 of IC001 (A Board). Power supply will shut down when waveform interval
exceeds 2 seconds.
IK (AKB)
If the RGB levels* do not balance within 2 seconds after the power is turned on, this error will be detected by IC001 (A Board). TV will stay on, but there
will be no picture.
*(Refers to the RGB levels of the AKB detection Ref pulse that detects IK).
Note that this differs from entering the Service Mode (Sound Volume +).

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4
1-1. REAR COVER REMOVAL
SECTION 1: DISASSEMBLY
1-2. CHASSIS ASSEMBLY REMOVAL
1
Remove screws from top of cover.
4 Screws
SCREW +BVTP 4X16 TYPE2 TT (B)
2
Remove screws from sides of cover.
4 Screws
SCREW +BVTP 4X16 TYPE2 TT (B) - 2 each side
3
Remove screws from bottom of cover.
2 Screws
SCREW +BVTP 4X16 TYPE2 TT (B)
4
Remove screws from back of cover.
3 Screws
SCREW +BVTP 3X12 TYPE2 TT (B)
5
Remove rear cover
5
2
1
1
Release the M Board.
2
Release the A Board wires from Clip Holder.
3
Press on catch tab to release the A Board.
4
Remove Power Cable Holders by gently
rocking to release clips.
5
Gently pull the chassis forward.
CV Board
Chassis Assembly
1
2
VD Board
3
43

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10
1-3. SERVICE POSITION
1
Release the M Board.
2
Release the A Board wires from Clip Holder.
3
Press on catch tab to release A Board.
4
Remove Power Cable Holders by gently rocking to release clips.
5
Gently pull the A Board forward until the HS Board has cleared the bracket.
6
Gently continuing pulling the A Board and HS Board forward to place in service position.
A Board
HS Board
M Board
VD Board
CV Board

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1. Discharge the anode of the CRT and remove
the anode cap.
2. Unplug all interconnecting leads from the
deflection yoke, neck assembly, degaussing
coils and CRT grounding strap.
3. Remove the CV Board from the CRT.
4. Remove the chassis assembly.
5. Loosen the neck assembly fixing screw and
remove.
6. Loosen the deflection yoke fixing screw and
remove.
7. Place the set with the CRT face down on
a cushion and remove the degaussing coil
holders.
8. Remove the degaussing coils.
9. Remove the CRT grounding strap and spring
tension devices.
10. Unscrew the four CRT fixing screws [located on
each CRT corner] and remove the CRT [Take
care not to handle the CRT by the neck].
1-4. PICTURE TUBE REMOVAL
WARNING: BEFORE REMOVING THE ANODE CAP
High voltage remains in the CRT even after the power is disconnected. To avoid electric shock,
discharge CRT before attempting to remove the anode cap. Short between anode and CRT
coated earth ground strap.
ANODE CAP REMOVAL PROCEDURE
WARNING: High voltage remains in the CRT even after the power is disconnected. To avoid electric shock, discharge CRT before attempting to remove
the anode cap. Short between anode and coated earth ground strap of CRT.
NOTE: After removing the anode cap, short circuit the anode of the picture tube and the anode cap to either the metal chassis, CRT shield, or carbon
painted on the CRT.
REMOVAL PROCEDURES
HOW TO HANDLE AN ANODE CAP
1. Do not use sharp objects which may cause damage to the surface of the
anode cap.
2. To avoid damaging the anode cap, do not squeeze the rubber covering too
hard. A material fitting called a shatter-hook terminal is built into the rubber.
3. Do not force turn the foot of the rubber cover. This may cause the shatter-
hook terminal to protrude and damage the rubber.
Turn up one side of the rubber cap in
the direction indicated by arrow a.
Use your thumb to pull the rubber
cap firmly in the direction indicated
by arrow b.
When one side of the rubber cap separates from
the anode button, the anode cap can be removed
by turning the rubber cap and pulling it in the
direction of arrow c.
ab
Anode Button
c
4
1
10 9
8
7
6
2
3
5

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12
CABLE WIRE DRESSING
KD-27FS170
- Dress Right & left speaker wire through DGC's tie wrap as picture shows.
- Make a knot in Right speaker wire as shown in picure
KD-27FS170 MODELS ONLY

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13
KD-27FS170
Dress RGB harness (A/CN301~ C/CN705) using a 9mm
purse lock (3-703-982-02).
Make a knot in Heater (A/CN503~C/CN901) harness
between black tapes as shown in picture.

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14
KD-27FS170
Dress DY's lead wire using a 9mm purse lock (3-
703-982-02).
Dress G2 wire twist once as picture
shown, do not over stress wire.

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15
KD-27FS170
Dress 9P harness (A/CN004~M/CN1100) & 12P
(HS/CN1004~A/CN303 using a 9mm purse lock (3-703-982-02) &
pass over analog tuner as shown in picture.
9P harness
Coaxial cable
Dress ground & coaxial cable of digital module using
a 5mm purse lock (3-703-981-02) as shown in picture.
Ground
cable
Connect ground cable in plug CN612 & pass
beside F-Pin as shown in picture.
F-Pin

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16
KD-27FS170
- Fix 12P harness (HS/CN1004~A/CN303) ,Lightening
cable & AC-Cord using a wire holder (4-065-850-11)
- Fix12P (HS/CN1004~A/CN303) harness, lightening
cable & AC-Cord using 2 wire holder (4-065-850-11). -
Pass 12P (HS/CN1004~A/CN303) over tuner as shown
in picture.
Wire Holder
12P harness

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17
KD-27FS170
30 ±1 cm
15 ±1 cm
Dress focus lead and HV cable together using 5mm purse lock
(3-703-981-02)
Behind DGC
Dress CRT ground behind DGC & pass
through CV board hook as shown in
picture.

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18
KD-27FS170
Pass audio ferrite beside heat sink as shown in picture (left side
of heat sink back view)
Install Chisilin ferrite core 1-500-586-11 on DGC
and use a cable tie 4-041-041-11 to avoid movement of
ferrite as shown in picture.
50mm

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KD-32FS170
- Dress Right speaker wire through DGC's tie wrap.
- Dress Left speaker wire under DGC and make a knot as picture shows.
KD-32FS170 MODELS ONLY

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20
KD-32FS170
- Pass RGB harness (A/CN301~ C/CN705) through
rotation coil using.
- Install rotation coil lead wire under DY clip.
- Pass VM harness over rotation coil lead & RGB
harness as shown in picture.
Dress Heater (A/CN503~C/CN901) & Dinamic focus
(A/CN502~VD/CN800) harness, make a loop using a
9mm purse lock (3-703-982-02) as shown in picture.
Rotation coil
wire.
VM harness