Sharp 66GS-62 (serv.man11) Service Manual ▷ View online
29
66GS-62H
ICs ADITIONAL INFORMATION: VCT3811 (IC1001)
Absolute Maximum Ratings
Symbol
Parameter
Pin Name
Min.
Max.
Unit
T
A
Ambient Operating Temperature
−
65
°C
T
C
Case Temperature (PSDIP64)
−
115
°C
T
C
Case Temperature (PMQFP128)
−
115
°C
T
S
Storage Temperature
−40
125
°C
P
TOT
Total Power Dissipation
−
1400
mW
VSUP
x
Supply Voltage
VSUP
x
−0.3
6
V
V
I
Input Voltage, all Inputs
−0.3
VSUP
x
+0.3
1)
V
V
O
Output Voltage, all Outputs
−0.3
VSUP
x
+0.3
1)
V
V
IO
Input/Output Voltage, all Open Drain Out-
puts
puts
−0.3
6
V
Block diagram of the VCT 38xxA (shaded blocks are optional)
Video
Front-end
Comb
Filter
Color
Decoder
Display
Processor
Video
Back-end
Panorama
Scaler
4
3
4
12
31
2
I
2
C Master
16 kB
Text RAM
Text RAM
3 kB
OSD
OSD
96 kB
CPU ROM
CPU ROM
TPU
DMA
CPU
24 IO Ports
Watchdog
2 CapCom
2 Timer
15:1 Mux
10-bit ADC
10-bit ADC
8-bit PWM
Audio
3
2
Clock
Oscillator
1 kB
CPU RAM
CPU RAM
XTAL1
XTAL2
VIN
AIN
Px
y
ADB, DB, CB
RGBOUT
RGBIN
VE
R
T
PR
O
T
HFLB
SE
N
S
E
I
2
C
XR
E
F
HOUT
VR
D
VR
T
SG
N
D
Color, Prio
MSync
I
2
C
VSUPAB
VS
U
PP1
GN
D
P
1
Reset
Logic
RESQ
VS
U
P
S
TEST
GNDAB
VS
U
P
A
F
VS
U
P
D
GND
A
F
GNDD
RS
W
2
GNDM
EW
8
14-bit PWM
2
2
3
CIN
SVM
V
ideo
GNDS
CLK20
RDY
BE
24
kB
VCT 38xx
AOUT
VSync
VOUT
24 kB ROM
3 kB
OSD RAM
OSD RAM
Pict.Improv.
30
66GS-62H
ICs ADITIONAL INFORMATION: VCT3811 (IC1001)
48
113
AIN2
114
AIN1
115
AOUT2
116
AOUT1
117
RESQ
118
SCL
119
SDA
120
XTAL1
121
XTAL2
122
VSUPS
123
GNDS
124
WE1Q
125
WE2Q
126
OE1Q
127
OE2Q
128
ADB18
CBIN
VSUPAF
47
GNDAF
46
SGND
45
VRT
44
VOUT
43
P10
42
P11
41
P12
40
P13
39
GNDP1
38
VSUPP1
37
P14
36
P15
35
P16
34
P17
33
VSUPADB
GNDADB
ADB16
ADB15
ADB14
ADB13
ADB12
ADB11
ADB10
ADB17
ADB9
ADB8
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76 75 74 73
25 26 27 28 29 30 31 32
ADB7
ADB6
ADB5
VSUPADB
ADB1
ADB0
DB0
DB1
DB2
DB3
VSUPDB
GNDDB
DB4
DB5
DB6
DB7
ADB2
ADB3
ADB4
GNDADB
72 71 70 69 68 67 66 65
49
CIN1
50
CIN2/CRIN
51
VIN1
52
VIN2
53
VIN3
54
VIN4
55
DISINTROM
56
P27
57
P26
58
P25
59
P24
60
VSUPP2
61
GNDP2
62
P23
63
P22
64
P21
97
VERTQ
98
VERT
99
EW
100
SENSE
101
GNDM
102
RSW1
103
RSW2
104
SVMOUT
105
ROUT
106
GOUT
107
BOUT
108
VSUPAB
109
GNDAB
110
VRD
111
XREF
112
AIN3
SAFETY
VPROT
BIN
GIN
RIN
FBLIN
TEST
P30
P31
HFLB
P32
P33
GNDP3
VSUPP3
P34
P35
HOUT
CLK20
VB0
VB1
VB2
VB3
VB4
VB5
VB6
VB7
VBCLK
P20
VSUPD
GNDD
P37
P36
VCT 38xx
31
66GS-62H
DESCRIPTION OF SCHEMATIC DIAGRAM
SAFETY NOTE:
1. DISCONNECT THE AC PLUG FROM THE AC
OUTLET BEFORE REPLACING PARTS.
OUTLET BEFORE REPLACING PARTS.
2. SEMICONDUCTOR HEAT SINKS SHOULD BE
REGARDED AS POTENTIAL SHOCK HAZARDS
WHEN THE CHASSIS IS OPERATING.
REGARDED AS POTENTIAL SHOCK HAZARDS
WHEN THE CHASSIS IS OPERATING.
NOTE:
1. The unit of resistance «ohm»is omitted (K=1000
1. The unit of resistance «ohm»is omitted (K=1000
ohms. M= Megaohm).
2. All resistors are 1/8 watt. unless otherwise noted.
3. All capacitors are mF, unless otherwise noted
3. All capacitors are mF, unless otherwise noted
(P= mmF).
4. The capacitor with Part No. RC-FZ9XXXBMNJ
is designed to with stand 63V.
5. The capacitor with Part No. RC-FZ4XXXBMNJ
is designed to with stand 50V.
SERVICE PRECAUTION:
THE AREA ENCLOSED BY THIS LINE ( )
IS DIRECTLY CONNECTED WITH AC MAINS
VOLTAGE.
WHEN SERVICING THE AREA, CONNECT AN
ISOLATING TRANSFORMER BETWEEN TV
RECEIVER AND AC LINE TO ELIMINATE HAZ-
ARD OF ELECTRIC SHOCK.
IS DIRECTLY CONNECTED WITH AC MAINS
VOLTAGE.
WHEN SERVICING THE AREA, CONNECT AN
ISOLATING TRANSFORMER BETWEEN TV
RECEIVER AND AC LINE TO ELIMINATE HAZ-
ARD OF ELECTRIC SHOCK.
WAVEFORMS MEASUREMENT:
1. TEST EQUIPMENT: Digital Oscilloscope (Tektronix TDS 3012).
2. TEST CONDITIONS: PAL B/G full colour bar, 1KHz sinewave (volume regulation 50%).
Note: Waveforms 8 and 11 should be taken with the TV set in Stand-by mode.
Red in
1
Green in
2
Blue in
3
!
IMPORTANT SAFETY NOTE:
PARTS MARKED WITH «
» (
) ARE
IMPORTANT FOR MAINTAINING THE SAFETY
OF THE SET. BE SURE TO REPLACE THESE
PARTS WITH SPECIFIED ONES FOR MAINTAIN-
ING THE SAFETY AND PERFORMANCE OF THE
SET.
OF THE SET. BE SURE TO REPLACE THESE
PARTS WITH SPECIFIED ONES FOR MAINTAIN-
ING THE SAFETY AND PERFORMANCE OF THE
SET.
CAUTION
This circuit diagram is original one, therefore there may be light difference
from yours.
This circuit diagram is original one, therefore there may be light difference
from yours.
32
66GS-62H
I Sense
7
V St-by
8
E/W Output
9
V Switch
10
V Control St-by
11
Vp (Primary)
12
Vertical Input
13
E/W Correction
14
V inner correction
15
Vertical + input
16
VH
17
H Control
18
Red output
4
Green output
5
Blue output
6
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