Power requirements4.5 V DC
Power consumptionApprox : 2.9W
SpeakerØ28 mm (1 1/8 in.), 0.1 W
Temperature range32 ˚F - 104 ˚F (0 ˚C - 40 ˚C)
DimensionsApprox. 91x109x64mm (w/h/d)
(3 5/8 x 4 3/8 x 2 5/8 in.) excl.
Projecting parts and controls
Strap lengthApprox. 1,300 mm (51 1/4 in.)
MassApprox. 230 g (8.1 oz), excl. batteries
Design and specifications are subject to change without notice.
Optional accessories
AC power adaptor AC-E45HG / External antenna cord EAC39 /EAC-110/Size AA (LR6) alkaline battery
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY SHADING AND MARK ¡ ON THE
SCHEMATIC DIAGRAMS, EXPLODED VIEWS AND IN THE P ARTS
LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE
COMPONENTS WITH SONY P ARTS WHOSE P ART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.
– 2 –
Page 3
TABLE OF CONTENTS
SectionTitlePageSectionTitlePage
1. GENERAL .......................................................................4
6. ELECTRICAL PARTS LIST...................................... 31
– 3 –
Page 4
– 4 –
A
a
22
22
2
11
11
1
AA(LR6) × 3
b
DC IN 4.5V
c
Power Sources (see fig. A)
Alkaline Batteries
Use Sony LR6 alkaline batteries (not supplied).
1
Push and slide the battery cover open.
2
Insert three batteries. Be sure to insert the (–) polarity
of each battery first as illustrated.
Battery Life: With continuous use, Sony LR6 alkaline
batteries will last about 3.0 hours.
Battery Type Size Battery Life
LR6 AA Approx. 3.0 hours
Note
When the picture becomes dim or the tuning does not lock
onto a channel, replace all the batteries with new ones.
House Current
See fig. A–b.
Note
Use only the recommended AC power adaptor, AC-E45HG
(not supplied). (For the polarity of the plug, see fig. A–
c).
to a wall outlet
Polarity of the plug
OFF/VHF/UHF
EXT ANT
CH +/–
VOL
BRT
2
B
a
b
Operation (see fig. B)
1
Set the OFF/VHF/UHF switch to VHF or UHF
whichever band you want to watch.
2
Press the CH +/– button to select a channel.
3
Adjust the volume with the VOL dial.
4
Adjust the brightness with the BRT dial.
To switch off the TV: Set the OFF/VHF/UHF switch to
OFF.
To improve the broadcast reception: Extend the strap
antenna and move the unit in every direction.
Note
If strong pressure or stress is applied to the antenna strap,
it automatically disconnects from the TV for safety.
Contact your nearest Sony dealer or authorized service
center for its repair.
There may be poor broadcast reception in the
following areas:
• Faraway from the broadcasting station, or behind a
mountain or tall building.
• Inside a train or car, etc.
• Where there strong interference, such as near a high
tension wire, neon sign, or radio station.
• Near a railway line or expressway, or under the air traffic
routes.
• In the underground shopping centers, tunnels, or solid
buildings.
Listening with headphones: Connect headphones (not
supplied) to the 2 (headphones) jack. The sound is heard
from both sides of the headphones, but the sound is
monaural.
How to use the TV
Wear the TV around your neck. You can adjust the length
of the strap. (See fig. B–a).
You can also suspend or place the TV on a flat surface. (See
fig. B–b).
SECTION1
GENERAL
The operating instructions mentioned here are partial abstracts from the
Operating Instruction Manual. The page numbers of the Operating Instruction Manual remein as in the manual.
Page 5
– 5 –
C
VHF
UHF
e
d
c
b
a
a Mixer
b 75Ω coaxial cable
c Feeder
d EAC-39 antenna cable (not
supplied)
e EAC-110 antenna cable (not
supplied)
External Antenna Connection
(see fig. C)
Connect an antenna cord EAC-39 (not supplied) or EAC110 (not supplied) to the TV. This will improve the TV’s
reception.
To EXT ANT
Page 6
SECTION 2
DISASSEMBLY
2-1. CABINET REMOVAL
1. Remove battery cover 8.
2. Push the two hooks in the lower section of the rear cabinet with
a pint and the like to undo them.
Hooks
2Channel
button
1Screw
(+P2 x 10)
1Front cabinet
assy
3 B board
4A board
5T board
3. While pressing the rear cabinet, undo hooks on the periphery.
4. Insert a pin into the upper side of the cabinet, and while pushing the hook, tilt the pin to the rear cabinet side.
5. Remove the channel button 2.
6. Remove the speaker cord from the connector.
7. Remove B board 3 and A board 4.
8. Remove one screw 6 (+P x 10) from T board 5.
9. Remove T board 5 from the hooks (one each on both side) on
the rear cabinet.
Front cabinet
Rear cabinet
Claw
7Rear cabinet assy
8Battery cover
– 6 –
Page 7
2-2. SERVICE POSITION
Service cord
1-900-211-84
CN602
A board
CN601
Service cord
1-900-211-84
B board
AC Power
adapter
AC-E45HG
CN301
J101
Mini jack
T board
CN201
Antena
– 7 –
Page 8
SECTION 3
CIRCUIT ADJUSTMENT
3-1. A BOARD ADJUSTMENT
+4.5V ADJUSTMENT
Measure the voltage between JL32 (4.5V) and JL33 (GND) with a
digital voltmeter, and adjust RV601 so that the voltage will be as
follows:
<Specification>
4.45 ± 0.05VDC
S601: UHF position
CONFIRMATION OF +30V
Measure the voltage between JL29 (30V) and JL33 (GND) with a
digital voltmeter, and adjust RV601 so that the voltage will be as
follows:
<Specification>
30.5 ± 1.5VDC
CONFIRMATION OF AUDIO OUTPUT
(1) Input 1kHz voice, 100% modulation from sound generator.
(2) Make RV501 MAX.
(3) Connect the probes of an oscilloscope to JL23 (SP) and JL15
(SP GND).
(4) Check the waveform on the oscilloscope, and make sure that it
is within the standard.
<Specification>
1.5 - 2.8Vp-p
3-2. T BOARD ADJUSTMENT
- T BOARD - (COMPONENT SIDE)
RV004
RV001
RV002
RV201
TU101
ROUGH ADJUSTMENT OF VIF.AFT
(1) Preparation
Set S601 in the VHF position.
Make JL18 (RF) signal-less
Insert 1kΩ between JL77 (4.5V) and JL28 (RF AGC).
Input a sweep signal to the section between JL26 (IF) and JL27
(IF GND).
Sweep signal
75
Fig.3-1
ATT
¶
0.01µF
6dBfo 45.75MHz}5kHz
JL26
Note:The sweep signal level should be -30 ± 5dBm at JL26.
The distance between the ATT output and JL26
should be as short as possible.
(2) Insert the output between JL72 (VIDEO) and JL71 (A.GND)
to an oscilloscope, and apply external voltage (MGC) to JL51
so that the waveform shown in Fig.3-2 will appear (the minimum section should not clip). Adjust T202 so that the position
of 45.75MHz will be the lowest.
Note:This portion should be approx. 1.0Vp-p when exter-
nal voltage is applied to JL51 (MGC).
The external voltage applied to JL51 (MGC) should
not exceed 4.3VDC.
– 8 –
Page 9
RF.AGC ADJUSTMENT
p
Approx. 1.0V
45.75MHz
Fig.3-2
(3) Remove the external voltage (MGC) from JL51.
(4) Connect the output between JL31 (AFT) and JL30 (D.GND) to
an oscilloscope, and roughly adjust T201 so that the position
of 45.75MHz will be a zero cross.
(5) Remove 1kΩ from the section between JL77 (4.5V) and JL28
(RF AGC).
(1) Input the VHF color bar signal from the test signal generator.
(2) Adjust RV201 to optimum position so that there is no snow
noise on the screen.
CHANNEL DISPLAY POSITION ADJUSTMENT
(1) Set S601 in the VHF position.
Insert resistors (47kΩ + 15kΩ) between JL25 and JL77 (4.5V
line), and short circuit JL21 and JL30 (D.GND).
(2) Receive 2ch, and adjust the channel display position with
RV002.
(3) Receive 13ch, and adjust the display bar with RV004.
(4) Carry out tracking, because (2) and (3) interfere with each other.
(5) Receive 6 and 7ch, and check that the display bar conforms to
the standard.
(6) Set S601 in the UHF position.
(7) Receive 14ch and adjust the display position with RV001.
(8) Receive 40ch and 69ch, and check that the display bar con-
forms to the standard.
(9) Remove resistors from JL25 and JL77, and open the short cir-
cuit between JL21 and JL30
JL25
AFT ADJUSTMENT
(1) Insert 1kΩ between JL77 (4.5V) and JL28 (RF AGC).
Note:Because of drifting due to aging, adjustment should
be made at the end of the process.
(2) Switch the sweep signal to CW.
fo = 45.75MHz ± 5kHz
Input the above signal to the section between JL26 (IF) and
JL27 (IF GND), and finely adjust T201 so that the level between JL31 (AFT) and JL30 (D.GND) will be 2.2 ± 0.4VDC.
(3) Remove 1kΩ from the section between JL77 (4.5V) and JL28
(RF AGC).
15K
47K
JL77
Display bar
Channel No.
6
*Channel No. and display ber are to be in line.
Fig.3-3
– 9 –
Page 10
3-3. B BOARD ADJUSTMENT
HUE ADJUSTMENT
- B BOARD - (COMPONENT SIDE)
RV301
RV402
GRADATION ADJUSTMENT
(1) Input a 10-step staircase signal from the test signal generator.
(2) Connect an oscilloscope probe between JL83 (G) and JL67 (D.
GND) and observe the waveform.
(3) The contrast should change when RV402 is turned.
(4) Connect the oscilloscope prove between JL84 (AUTO CB) and
JL67 (D. GND), and observe the waveform. Adjust RV402 so
that voltage A is 2.2±0.2V
(5) Check that the waveform between JL84 and JL67 is as shown
in Fig.3-4.
(6) Check to see that the phases C and D are within the range speci-
fied (↔).
(1) Receive a color bar.
(2) Insert an oscilloscope between JL81 (B) and JL67 (D.GND).
(3) Arrange RV301 as shown in Fig.3-5.
Fig.3-5
JL83
0 IRE
JL84
100 IRE
Picture contrast
is varies.
D
C
A = 2.2 ± 0.2V
Fig.3-4
– 10 –
Page 11
4-1. BLOCK DIAGRAM
IF
TU101
AGC
TUNER
RF IN
BS
VB
UB
+4.5V
MB
SECTION 4
DIAGRAMS
IF AMP
Q201
IC001 TUNER CONTROL
SW
Q006
28
27
BS
U/V
FILTER
SWF201
BS
COMPOSITION
BAND
SELECT
TUNING
CONTROL
BAND
SELECT
AUTO
RETURN
3
HP
DEFEAT
OUTPUT
SIGNAL
DEFECT
COMPARATOR
DEF
FH
H SYNC
AFC
SUD
14
IC401
MONITER CONTROL
4037R2
HSO
CP
CL2
CLB
CLA
D2
1
2
3
4
5
CP
CP
CL2
CL2
CLB
CLB
CLA
CLA
D2
D2
24
40
22
38
21
37
20
36
12
28
IF
6
IF
7
AGC OUT
3
AGC DL
4RV201
IC201 VIF/SIF DET
IF AMP
AGC IF
VIDEO
DET
REF COIL
REF COIL
19
20
LLD
CN201CN502
UB1212
VHF
H.P
2
3
2
3
+4.5V
S601
(1/2)
CN601CN301
VHF
H.P
2
3
2
3
BUFFER
Q403
IC501 HP AMP
11
D3
D4
D1
BESTB
TPR1B
DB 10
6
7
8
9
12
13TPR1
VM BUFFER
Q407
SW
Q406
3
1
4
5
6
FH SW
Q005
Q007
AFC SW
INV
Q205
CF202
AFT
E-VDL
14
FM DET
15
LIM
16
SYNC
23
AFT
17
AFT COIL
21
FM
DET
SYNC
SEP
AFT
BUFFER
LIMITER10
VIDEO
AMP
AUDIO
SIF
DET OUT
SYNC SEP
13
18
22
CF203
CF201
BUFFER
Q202
AUDIO
5
VIDEO
9
RV501
5
9
2
VCC
V+
J501
6
7
PHONES
SPEAKER
VIDEO
9
9
SYNC SEP
Q303
34
V IN
D3
D3
D4
D1
D1
RES
RES
TPR2
TPR1
VM
VM
VM
VSS
27
10
26
25
13
29
23
39
9
2
6
4
3
LCD
MONITOR
TV
BUFFER
Q001
RV001
U LOW
RV003
UA
RV002
V LOW
RV004
V HI
AMP
Q002
26
18
22
20
19
23
24
BT
UP
UA
VLP
VHP
VHA
VLA
BT
GEN.
INITIAL
BAR
DISPLAY
POSITION
ADJUST
T(TUNER,VIF/SIF DET,TUNING)
SET
CHARGE/
DISCHARGE
CIRCUIT
BA R
OUTPUT
CS
H SYNC
7
10
V
30
U
31
INV/SW
Q003,004
8
UP DOWN SW 1111
IND
BATTERY
J701
DC IN
7
8
S601
(2/2)
S001S002
DOWN
F601
+4.5V
UP
D701
A(DC IN,B/L INV)
RV601
PORT SW
Q610
RV450
PORT SW
Q601-603
BUFFER
Q401
DRIVE
Q701
DRIVE
Q702
9
8
4
+30V
3
2
4
1
5
T601
T701
H SYNC
7
IND
7
88
IND SW
Q408
IC301 Y/C/J
1
+30V
6
+4.5V
7
3
1111BRT
8
BACK
LIGHT
6
RV301
3.58MHz
VIDEO IN
29
SYNC SEP
1910
TINT CONT
2111
VCXO IN
2312
VCXO OUT
X301
HD IN
CONTRAST
R OUT
G OUT
B OUT
INV
51
Q302
35 H IN
38 INB
R40
AUTO CB
23
R IN
28
G IN
29
27
B IN
XT1
XTD
20
21
30TGL VL
4.5MHz
RV402
BUFFER
Q402
X401
VDG
VDR
VDG
VDR
VDB
VDB
VS2
VS2
17
18
33
34
16
32
15
31
B(HP AMP,MONITOR CONTROL,CHROMA)
– 11 –
– 12 –
– 13 –
– 14 –
Page 12
4-2. CIRCUIT BOARDS LOCATION
B
T
A
4-3. PRINTED WIRING BOARDS AND SCHEMATIC
DIAGRAMS
Note:
• All capacitors are in µF unless otherwise noted. pF : µµF 50WV or less are not
indicated except for electrolytics and tantalums.
• All electrolytics are in 50V unless otherwise specified.
• All resistors are in ohms.
kΩ=1000Ω, MΩ=1000kΩ
• Indication of resistance, which dose not have one for rating electrical power , is
as follows.
Pitch : 5mm
Rating electrical power :
: internal component.
•
: panel designation and adjustment for repair.
•
1
/
W (CHIP : 1/10W)
4
• All variable and adjustable resistors have characteristic curve B, unless otherwise noted.
•As to the voltage volue shown by the semiconductors on the Shematic Diagram, see the another list
• Readings are taken with a color-bar signal input.
• Readings are taken with a 10MΩ digital multimeter.
• V oltages are dc with respect to ground unless otherwise noted.
• V oltage variations may be noted due to normal production tolerances.
When indicating parts by reference number,
please include the board name.
• CAPACITORS
PF : µµ F
• There are some cases the reference number on one board
overlaps on the other board. Therefore, when ordering
parts by the reference number, please include the board
name.
REF. NO.PART NO.DESCRIPTIONREMARK
--------------------------------------------------------*A-4954-034-A A BOARD, COMPLETE
1-517-702-11 LIGHT, BACK
4-561-086-01 SHIELD, BACK LIGHT
RB4011-236-416-11 NETWORK, RES 2.2K
RB4021-236-416-11 NETWORK, RES 2.2K
RB4031-236-416-11 NETWORK, RES 2.2K
RB4041-236-416-11 NETWORK, RES 2.2K
RB4051-236-416-11 NETWORK, RES 2.2K