Sony Trinitron KV-28DS60U User manual

1
SERVICE MANUAL GE-1A CHASSIS
MODEL
COMMANDER DEST CHASSIS NO.
MODEL
COMMANDER DEST CHASSIS NO.
KV-28DS60U
RM-891 UK SCC-Q21A-A
KV-32DS60U
RM-891 UK SCC-Q21B-A
®
MICROFILM
TRINITRON
®
COLOR TV

2
ITEM MODEL Television System Stereo System Channel Coverage Color System
UK I NICAM Stereo UHF : B21-B69 PAL
NTSC4.43, NTSC3.58
(VIDEO IN)
MODEL 28DS60U 32DS60U
Power Consumption 200W 200W
[PICTURE TUBE]
KV-28DS60 FD Trinitron WIDE
Approx. 71 cm (28 inches)
(Approx. 66cm picture measured
diagonally)
102 degree deflection
KV-32DS60 FD Trinitron WIDE
Approx. 82 cm (32 inches)
(Approx. 76 cm picture measured
diagonally)
102 degree deflection
Input/Output Terminals
[REAR]
21-pin Euro connector (CENELEC standard).
- Inputs for Audio and Video signals.
- Inputs for RGB.
- Outputs of TV Video and Audio signals.
21-pin Euro connector
- Inputs for Audio and Video signals.
- Inputs for S video.
- Outputs forVideo and Audio signals (selectable).
21-pin Euro connector
- Inputs for Audio and Video signals.
- Inputs for S video.
[FRONT]
3 Video output - phono jack
3Audio inputs - phono jacks
3 S Video input - 4 pin DIN
Headphone jack : stereo minijack
Sound output 2x30W (Music Power)
Power requirements 220 - 240V
Dimensions
KV-28DS60 Approx 773 x 501 x 526 mm (w/h/d)
KV-32DS60 Approx 867 x 564 x 558 mm (w/h/d)
Weight
KV-28DS60 Approx 56.5kg
KV-32DS60 Approx 68.5kg
Supplied accessories RM-891 Remote Commander (1)
IEC designated R6 batteries (2)
Other features NICAM, DNR, Dolby Digital Surround
System, Graphic Equalizer, TELETEXT,
Smartlink
[RM-891]
Remote control system Infrared control
Power requirements 3V dc
2 batteries IEC designation
R6 (size AA)
Dimensions Approx 210x56x24mm (w/h/d)
Weight Approx 110g (Not including battery)
Design and specifications are subject to change without notice.
1
2S
3S

3
WARNING
The flexible mains lead is supplied connected to a B.S. 1363 fused plug
having a fuse of 5 AMP capacity. Should the fuse need to be replaced,
use a 5 AMP FUSE approved by ASTA to BS 1362, ie one that carries the
mark.
IF THE PLUG SUPPLIED WITH THIS APPLIANCE IS NOT SUITABLE
FOR THE OUTLET SOCKETS IN YOUR HOME, IT SHOULD BE CUT
OFF AND AN APPROPRIATE PLUG FITTED. THE PLUG SEVERED
FROM THE MAINS LEAD MUST BE DESTROYED AS A PLUG WITH
BARED WIRES IS DANGEROUS IF ENGAGED IN A LIVE OUTLET
SOCKET.
When an alternative type of plug is used it should be fitted with a 5 AMP
FUSE, otherwise the circuit should be protected by a 5 AMP FUSE at the
distribution board.
ASA
T
How to replace the fuse.
Open the fuse compartment with
a screwdriver blade and replace
the fuse.
FUSE
Model Name
Item KV-28DS60U KV-32DS60U
Pal Comb ON ON
PIP OFF OFF
RGB Priority ON ON
Woofer Box ON ON
Scart 1 ON ON
Scart 2 ON ON
Front in (3) ON ON
Scart 4 ON ON
Projector OFF OFF
AKB in 16:9 mode ON ON
Norm B/G OFF OFF
Norm I ON ON
Norm D/K OFF OFF
Norm AUS OFF OFF
Norm L OFF OFF
Norm SAT OFF OFF
Norm M OFF OFF
Teletext ON ON
Nicam Stereo ON ON
Language Preset English English

4
21 pin connector
Connected Not Connected (open) * at 20Hz - 20kHz
R/D/D/D L/G/S/I
2
S
2
14
S
4
1/
R/D/
D/D
L/G/
S/I
C
S
S
MODEM
....
L/G/S/I R/D/D/D
S33
3
19
17
15
13
11
9
7
5
3
1
20
18
16
14
12
10
8
6
4
2
21
Pin No 124 Signal Signal level
1Audio output B
(right) Standard level : 0.5V rms Output impedence : Less than 1kohm*
2Audio output B
(right) Standard level : 0.5V rms Output impedence : More than 10kohm*
3Audio output A
(left) Standard level : 0.5V rms Output impedence : Less than 1kohm*
4Ground (audio)
5Ground (blue)
6Audio input A
(left) Standard level : 0.5V rms Output impedence : More than 10kohm*
7Blue input 0.7 +/- 3dB, 75 ohms positive
8Function select
(AV control)
High state (9.5-12V) : Part mode
Low state (0-2V) : TV mode
Input impedence : More than 10K ohms
Input capacitance : Less than 2nF
9Ground (green)
10 Open
11 Green Green signal : 0.7 +/- 3dB, 75 ohms,
positive
12 Open
13 Ground (red)
14 Ground (blanking)
15
_ _ Red input 0.7 +/- 3dB, 75 ohms, positive
_ (S signal Chroma
input) 0.3 +/- 3dB, 75 ohms, positive
16 Blanking input
(Ys signal) High state (1-3V) Low state (0-0.4V) Input impedence : 75 ohms
17 Ground (video
output)
18 Ground (video
input)
19 Video output 1V +/- 3dB, 75ohms, positive sync 0.3V
(-3+10dB)
20
_ _ Video input 1V +/- 3dB, 75ohms, positive sync 0.3V
(-3+10dB)
_ Video input
Y (S signal) 1V +/- 3dB, 75ohms, positive sync 0.3V (-3+10dB)
21 Common ground
(plug, shield)
Signal
Ground
Ground
Y (S signal) input
C (S signal) input
Pin No.
1
2
3
4
Signal Level
1V 3dB 75 ohm, positive Sync. 0.3V -3 + 10dB
0.3V 3dB 75 ohm, positive Sync.

5
GE-1A SELF DIAGNOSTIC SOFTWARE
The identification of errors within the GE-1A chassis is triggered in one of two ways :- 1: Busy or 2: Device failure to respond to IIC. In the event
of one of these situations arising the software will first try to release the bus if busy (Failure to do so will report with continuous flashing LED) and
then communicate with each device in turn to establish if a device is faulty. If a device is found to be faulty the relevant device number will be dis-
played through the LED (Series of flashes which must be counted) See table 1., non fatal errors are reported using this method.
ERROR LED
ERROR
COUNT
No error 00
Not allowed (may be confused with Sircs response
flash!) 01
Over Current Protection 02
Over Voltage Protection 03
Vertical Protection 04
No function 05
H - Protection 06
Speaker Protection 07
MEGATEXT 08
NVM 09
Main colour decoder 10
Feature Box 1 11
D/A converter 12
Multi Component processor 13
Multi sound processor 14
DMUX 15
Feature Box 2 16
StBy LED
ON ON ON
OFF OFF
Flash Timing Example : e.g. error number 3
Diagnostic Item
Description No of times Standby LED Flashes Probable cause Location Detected Symptoms
Power does not turn on Does not light Power cord is not plugged in
Fuse is burned out Power does not come on No power is supplied to the TV
AC power supply is faulty
+B Overvoltage(OVP) 2 times H.OUT (Q502) is shorted. (D Board)
IC603 Power IC is shorted. (D Board) Power does not come on Load on power line has shorted
Vertical Deflection stopped 4 times +15V is not supplied R519 open (D Board)
-15V is not supplied R518 open (D Board)
IC502 is shorted (D Board)
Vertical deflection pulse has stopped
Power line has shorted