Sony KV-28DS20U Service Manual ▷ View online
1
SERVICE MANUAL BE-3E
CHASSIS
MODEL
COMMANDER DEST CHASSIS NO.
MODEL
COMMANDER DEST CHASSIS NO.
KV-28DS20U
RM-888
UK
SCC-Q25D-A
KV-32DS20U
RM-888
UK
SCC-Q25F-A
KV-28DX20U
RM-888
UK
SCC-Q25C-A
KV-32DX20U
RM-888
UK
SCC-Q25E-A
®
M I C R O F I L M
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)
NTSC4.43, NTSC3.58
(VIDEO IN)
MODEL
28DS20U
32DS20U
28DX20U
32DX20U
Power Consumption
222W
209W
195W
185W
[PICTURE TUBE]
KV-28DS20U/28DX20U
KV-28DS20U/28DX20U
FD Trinitron Wide
Approx. 71 cm (28 inches)
(Approx. 66 cm picture measured
diagonally)
102 degree deflection
Approx. 71 cm (28 inches)
(Approx. 66 cm picture measured
diagonally)
102 degree deflection
KV-32DS20U/32DX20U
FD Trinitron Wide
Approx. 82 cm (32 inches)
(Approx. 76 cm picture measured
diagonally)
102 degree deflection
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.
2/
2
21-pin Euro connector
-
Inputs for Audio and Video signals.
-
Inputs for S video.
-
Outputs for Video and Audio signals (selectable).
3
21-pin Euro Connector
-
Inputs for Audio Video Signals
-
Inputs for S Video
Phono jacks
-
Outputs for Audio Signals
Centre Speaker Terminals (KV-28DS20U/32DS20U only)
Surround Speaker Terminals (KV-28DS20U/32DS20U only)
Surround Speaker Terminals (KV-28DS20U/32DS20U only)
[FRONT]
3
Video output - phono jack
3
Audio inputs - phono jacks
S Video input - 4 pin din
Headphone jack : stereo minijack
Sound output
2 x 20 W (Music Power)
Subwoofer
20 W (Music Power)
Surround
2 x 5 W (Music Power)
(KV-28DS20U/32DS20U only)
(KV-28DS20U/32DS20U only)
Centre
10 W (Music Power)
(KV-28DS20U/32DS20U only)
(KV-28DS20U/32DS20U only)
Power requirements
220 - 240V
Dimensions
KV-28DS20U/28DX20U
KV-28DS20U/28DX20U
Approx 761x496x525 (w/h/d)
KV-32DS20U/32DX20U
Approx 874x563x571 (w/h/d)
Weight
KV-28DS20U/28DX20U
KV-28DS20U/28DX20U
Approx 44.0kg
KV-32DS20U/32DX20U
Approx 62.0kg
Supplied accessories
RM-888 Remote Commander (1)
IEC designated R6 batteries (2)
IEC designated R6 batteries (2)
Other features
NICAM, FASTEXT, TOPTEXT,
DIGITAL TELETEXT
DOLBY PROLOGIC*, ELECTRONIC
PROGRAMME GUIDE (EPG)
DIGITAL TELETEXT
DOLBY PROLOGIC*, ELECTRONIC
PROGRAMME GUIDE (EPG)
* (KV-28DS20U/32DS20U)
[RM-888]
Remote control system
Remote control system
Infrared control
Power requirements
3V dc
2 batteries IEC designation
R6 (size AA)
2 batteries IEC designation
R6 (size AA)
Dimensions
Approx 44x209x23mm (w/h/d)
Weight
Approx 89g (Not including battery)
Design and specifications are subject to change without notice.
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.
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.
Model Name
Item
KV-28DS20U
KV-32DS20U
KV-28DX20U
KV-32DX20U
Pal Comb
OFF
OFF
PIP
OFF
OFF
RGB Priority
OFF
OFF
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
ASA
T
How to replace the fuse.
Open the fuse compartment with
a screwdriver blade and replace
the fuse.
Open the fuse compartment with
a screwdriver blade and replace
the fuse.
FUSE
4
KV-28DS20U/32DS20U
21 pin connector ( , 2/ , 2 3)
21 pin connector ( , 2/ , 2 3)
KV-28DX20U/32DX20U
21 pin connector ( , 2/ , 2 3)
21 pin connector ( , 2/ , 2 3)
Connected
Not Connected (open) * at 20Hz - 20kHz
19
17
15
13
11
9
7
5
3
1
20
18
16
14
12
10
8
6
4
2
21
Pin No
1
2
4
Signal
Signal level
1
Audio output B
(right)
(right)
Standard level : 0.5V rms
Output impedence : Less than 1kohm*
Output impedence : Less than 1kohm*
2
Audio output B
(right)
(right)
Standard level : 0.5V rms
Output impedence : More than 10kohm*
Output impedence : More than 10kohm*
3
Audio output A
(left)
(left)
Standard level : 0.5V rms
Output impedence : Less than 1kohm*
Output impedence : Less than 1kohm*
4
Ground (audio)
5
Ground (blue)
6
Audio input A
(left)
(left)
Standard level : 0.5V rms
Output impedence : More than 10kohm*
Output impedence : More than 10kohm*
7
Blue input
0.7 +/- 3dB, 75 ohms positive
8
Function select
(AV control)
(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
Low state (0-2V) : TV mode
Input impedence : More than 10K ohms
Input capacitance : Less than 2nF
9
Ground (green)
10
Open
11
Green
Green signal : 0.7 +/- 3dB, 75 ohms,
positive
positive
12
Open
13
Ground (red)
14
Ground (blanking)
15
_
_
Red input
0.7 +/- 3dB, 75 ohms, positive
_
(S signal Chroma
input)
input)
0.3 +/- 3dB, 75 ohms, positive
16
Blanking input
(Ys signal)
(Ys signal)
High state (1-3V) Low state (0-0.4V)
Input impedence : 75 ohms
Input impedence : 75 ohms
17
Ground (video
output)
output)
18
Ground (video
input)
input)
19
Video output
1V +/- 3dB, 75ohms, positive sync 0.3V
(-3+10dB)
(-3+10dB)
20
_
_
Video input
1V +/- 3dB, 75ohms, positive sync 0.3V
(-3+10dB)
(-3+10dB)
_
Video input
Y (S signal)
Y (S signal)
1V +/- 3dB, 75ohms, positive sync 0.3V
(-3+10dB)
(-3+10dB)
21
Common ground
(plug, shield)
(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.
L/G/S/I R/D/D/D
MONO
+
+
P
_
_
s
3
3
3