Page 1
(with price)
INDEX
POCKET TELEVISION
TV-600B
DECEMBER 1994
Page
Specifications.............................................................................................1
Block Diagram ...........................................................................................2
Circuit Description......................................................................................3
Adjustment
Linear PCB..........................................................................................5
A/D PCB..............................................................................................9
Troubleshooting.......................................................................................10
Printed Circuit Boards..............................................................................11
Wiring Diagram........................................................................................15
Exploded View / Disassembly..................................................................16
Electrical Parts List ..................................................................................17
Mechanical Parts List...............................................................................23
IC and Transistor Lead Identification .......................................................24
Schematic Diagrams and Waveforms .....................................................26
R
Page 2
CIRCUIT DESCRIPTION
TUNING VOLTAGE GENERATOR
BT
BS
16
15
BS
Vcc
VCC6
IC500 MSC1169MS-K
14
BT
13
IN
12
OUT
11
TU
10
H/L
TU
H/L
BU
9
U/V
VREFU1U2
1
2
VL1
VL2
VH1
VH2
GND
3
4
5
6
7
8
VREF
R500R501R502
GND
Figure 1
This circuit generates the DC tuning voltage BT for selecting a channel with a TU pulse being output from
IC700.
IC500 has 3 circuits for converting pulses to voltages; it selects one of VHF-L, VHF-H, or UHF, and
causes the tuning voltage to be output from the OUT terminal (pin 12). Figure 2 and Table 1 show the
conditions for selection.
IC500
TU
11
VHF
-L
VHF
-H
UHF
910
U/V H/L
Figure 2
12
OUT(BT)
— 3 —
Inputs
U/V
L
L
H
H
H/L
L
VHF-L receiving
H
VHF-H receiving
L
UHF receiving
H
UHF receiving
Table 1
Function
Page 3
POWER SUPPLY
Vref
VCC1-1
C100
D100
C105
CP100
VR100
R101
C135
Q100
Q101
R111
R102
C140
Q111
R115
C145
R117
Figure 3
1
9
CP104
T100
GND
VCC2-2
L102
D155
32
4
5
D152
6
7
D150
D152
C112
L101
C110
C113
VCC2-3
R133
VCC7
CP108
VCC6
CP107
VCC2
CP109
VEE1
CP110
C115
C114
The power supply consists of a DC-DC converter and causes the voltages to be output as shown in Table 2.
Name Voltage Function
VCC2 3.95 ± 0.02 V Main voltage
VCC6 30.5 ~ 39.0 V Tuning voltage
VCC7 53.5 ~ 72.5 V Tuning voltage/Display voltage
VEE1 –6.3 ~ –7.9 V Display voltage
Table 2
— 4 —
Page 4
ADJUSTMENT
LINEAR PCB
Items To Be Adjusted
Item Measuring Instrument
VCC2 voltage setting Voltmeter
Video detection coil adjustment TV signal generator, pattern generator, oscilloscope,
low-pass filter
AFT coil adjustment Sweep generator, oscilloscope, voltmeter
Contrast adjustment TV signal generator, pattern generator, oscilloscope
AGC adjustment TV signal generator, pattern generator, IF levelmeter
Adjustment And Test Point Locations
T201
T200
Top View
— 5 —
Page 5
TP7
VR100
TP5
VR300
TP2
TP1
PadIF
VR200
TP3
Bottom View
Equipment Connection / Adjustment Procedure
VCC2 Voltage Setting
TV-600
Set
TP4
Voltmeter
Output
TP1
Input Input Input Output Output
Connection Point Signal Connection Point
Adjust Result
VR100
Voltmeter
— 6 —
TP1
Adjust for 3.95 ± 0.02 V
reading on voltmeter.
Page 6
A/D PCB
Item to Be Adjusted
Item Measuring Instrument
Clock adjustment Voltmeter
Adjustment And Test Point Locations
TOP VIEW
TP6
Equipment Connection / Procedure
Clock Adjustment
TV-600
Set
Output
TP6
Input Input Input Output Output
Connection Point Signal Connection Point
Adjust Result
VR700
Voltmeter
Voltmeter
TP6
VR700
Adjust for 2.05 ± 0.05 V reading on voltmeter.
— 9 —
Page 7
TOP VIEWS
Linear
PRINTED CIRCUIT BOARDS
DB –DB –DB –
+
C100
DB +DB +
CN700
C115
+
C112
D180
T201T200
JK100
C110
+
+
C105
TU200
+
C202
JK200
T100
+
L101
C210
+
C114
+
C113
R223
+
R222
C244
L102
+
C207
F201
F200
C291
R247
C290
L202
R133
R310
C345
C340
C348
+
F202
C208
FU100
C305
SW100
+
R335
+
C309
R336
R322
R346
H300
R326
BL
T950
C927
Q950
L950
C925
1
Q951
— 11 —
R950
507BL
Page 8
BOTTOM VIEWS
Linear
CP207
CP327 CP326
CP325
VR300
IC300
VR301
C351
R325
R307
R330
R331
CP204
CP210
CP224
R306
C330
CP340
C350
CP203
CP221
R201
Q300
R305
CP541
CP209
HP200
R204
CP330
L200C335
C545
C235
C233
C237
R205
R246
C234
R545
R541
R207
Q200
C240
CP245
R550
CP208
R224
R202
VR200
C246
C249
IC500
C550
C236
R203
R208
CP211
R500
D100
CP109
R212
C245
R209
CP500
CP206
R210
IC200
CP590
R502
R501
CP107
C185
R115
D150
Q101
D152
D154
CP240
VR100
Q100
C140
R111
CP110
C262
R236
C259
C257
R117
Q111
C145
C263C261 C264
R229
D155
C146
R230
C135R101
CP542
CP322
CP320
CP235
CP236
CP108
CP104
CP100
BL
HP906
HP901
FU901
HP903 HP902
— 12 —
FU900
HP950
HP900
HP905
Page 9
TOP VIEW
A/D
IC703
C770
C775
IC702
17
HP700
R645
R700
R611
C642
C630
R706
R704
R610
R710
R803
R707
R738
VR700
D707
SW701
DOWN
C755
R733C758
C756
C760
D705
R606
L705
R730
R607
IC701
IC700
SW700
UP
R727
R726
R725
R740
R800
D800
C830
R833
R809
R810
R827
Q802
Q800
R830
Q806
R824
D803
C840
R815
Q801
C836
R816
Q805
D805
Q804
R825
R845
C841
R820
C835
R814
R808
— 13 —
Page 10
BOTTOM VIEW
A/D
VC
STB
D4
D5
V4
CDB2
CNB2
CFB2
VR600
VR800
V0
C808
GND1
R615
C800
C806
VCC2-8
D6
C740
V3
SNB
C741
D700
D3
D2
C742
PD
D701
C761
D1
R719
C750
C734
C751
GND2
C606
CK2
CK1
C635
IC600
C765
R641
C603
JK600
— 14 —
BL+
BL-
SP-
SP+
Page 11
TOP VIEWS
WIRING DIAGRAM
A/D PCB
1
17
17
1
Linear PCB
— 15 —
Page 12
EXPLODED VIEW / DISASSEMBLY
8
1
2
12
10
12-2
13
8-1
12-1
8-5
7
8-3
2-1
2-2
3
4
6
5
6-1
6-2
8-2
9
8-2
8-4
11
14
6-8
6-9
6-3
6-5
6-6
6-7
6-10
7
7
15-3
6-4
15
15-1
15-2
18
16
7
17
19
20
— 16 —
Page 13
IC/LSI
IC AND TRANSISTOR LEAD IDENTIFICATION
IC200 IC300
M51348FP M52042FP
IF AGC OUT 1 24 IF AGC ADJ
IF AGC IN 2 23 SyOUT
RF AGC 3 22 SyIN
AGCDL 4 21 AFTC
VCCv 5 20 LLD
IFIN 6 19 LLD
IFIN 7 18 VIDEO
GNDv 8 17 AFT
VCCs 9 16 SIFOUT
SIFIN 10 15 FMD
FB 11 14 ATT
GNDs 12 13 AUDIO
IC500
MSC1169MS-K
VIDEO 1 24 VCC
SY IN 2 23 VCXO OUT
ACCF 3 22 Fsc
SY OUT 4 21 VCXO IN
HDIN 5 20 COLOR
Y CLAMP 6 19 TINT
Y LPF 7 18 KILLER RF
Y OUT 8 17 APCF
CONT 9 16 SW
R 10 15 KILLER OUT
G 11 14 PIX
B 12 13 GND
IC600
NJM2070M
Vref 1 16 VCC
U1 2 15 BS
U2 3 14 BT
VL1 4 13 IN
VL2 5 12 OUT
VH1 6 11 TU
VH2 7 10 H/L
GND 8 9 U/V
NC 1 8 NC
+IN 2 7 VCC
–IN 3 6 OUT
GND 4 5 GND
— 24 —
Page 14
IC700
MSM6625-02GSK-640F
KDB
KCB
AVB
UHF
VLBTUMTB
VDD1
HDB
C-SPDOSC2
OSC1
CK2
AFT
M1
M2
M3
M4
M11
M5
M6
TE6
TE5
TE4
TE3
TE2
TE1
VSS2
28272625242322212019181716
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43444546474849505152535455
B
R
AD2
AD1
G
RLL
RHH
VDD2
M7M8M9
M10
PS1
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
56
VSS1
CK1
ECB
STB
SCB
CNB
CFB
CDB
SNB
D6
D5
D4
D3
D2
D1
TRANSISTORS
C
BEC BEC
2SD1119
BE
2SB709A
2SC4238
— 25 —
C
2SD601A
2SD1149-S
2SD965R
Page 15
LINEAR
SCHEMATIC DIAGRAMS AND WAVEFORMS
TP7
VHF(L) VHF(H) UHF
BU
BS
BV
BM
0
21
3.8
3.8
TP2
0
0
3.8
3.8
2
3.8
0
TP3
3
TP4
0
3.8
1.9
1.9
1.9
3.6
0.9
3.1
1
2.9
2.9
1.8
2.9
3.8
3.1
3.1
3.7
1.7
1.4
0.8
1.4
1.1
4
3.8
1.7
2.9
3.3
1.4
3.5
1.9
0.4
Pad IF
10
TP5
2.5
0.7
0.4
2.9
2.5
2.6
1.4
1.4
1.4
1.4
5
33.7
21/0
0~22.8
4.7
3.5
9
TP1
1.6
2.9
1.7
2.1
2.9
2.8/0
0/3.8
8
7
6
— 26 —
Page 16
A/D
TP6
11
12
— 27 —
Page 17
BL
FU900 102deg
HP901 HP903
HP900 HP902
FU901 102deg
150p
C927
10
T950
NT–01
5
HP905
HP90612
LA900
2inch (ST)
CP990
4
3
2
1
Vcc1–1
2
Q950
2SD965–R
820
*R950
CK 100u
L950
Vcc9
C925
Q951
2SD965–R
CP900
TF50VO. 18
GND
Vcc1–1
HP950 fromAD
GND 1
— 28 —
Page 18
WAVEFORMS
1.1 V
112 mV
1.0 V0.9 V3.4 V4.0 V
63.5 µs 63.5 µs 63.5 µs
1 Q200 Collector
4 IC300 Pin 23
7 IC300 Pin 4
2 IC200 Pin 19 3 IC200 Pin 18
0.24 µs 63.5 µs
5 IC300 Pins 10, 11, 12 6 IC300 Pin 5
63.5 µs
8 IC300 Pin 1 9 Q111 Collector
63.5 µs 5.2 µs
2.2 V
3.0 V
63.5 µs
14 V
800 mV
2.8 V
5.2 µs 130 ns 420 ns
0 Q111 Base A IC700 Pin 16 B IC700 Pin 14
— 29 —
2.6 V
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