Sharp 66GS-62 (serv.man2) Service Manual ▷ View online
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B
R
G
+5V
1
2
3
4
5
6
1
2
3
4
+12V
+12V
+12V
+12V
1
2
3
4
5
6
7
.
.
.
.
IC901
TDA6107
VI(1)
1
VI(2)
2
VI(3)
3
GND
4
SENS
5
VDD
6
VO(3)
7
VO(2)
8
VO(1)
9
R906
2K7
2K7
(1/2W)
C901
10uF
10uF
(250V)
D901
1N4004
DX0501BM
C902
PB3DE472
FOCUS
G2
(L3)
(H)
CNW-2710BM
CNW-2710BM
R908
2K7
2K7
(1/2W)
R907
2K7
(1/2W)
R904
4M7
4M7
(1/2W)
Q903
2SC2412
2SC2412
Q902
2SC2412
2SC2412
Q901
2SA1037
2SA1037
R912
2K2
2K2
R910
390
390
R911
100
Q906
2SC2412
Q905
2SC2412
2SC2412
Q904
2SA1037
R917
2K2
2K2
R915
390
390
R916
2K2
2K2
Q909
2SC2412
2SC2412
Q908
2SC2412
Q907
2SA1037
R919
120
120
R923
390
390
R922
2K2
2K2
R920
390
390
R921
100
100
D902
C5V1
EX0408BM
C910
100nF
R905
2K2
2K2
(K)
CNW-2865BM
CNW-2865BM
C911
100nF
R903
0
R902
0
R926
560
R927
560
R925
560
Q910
2SA1037
R933
3K3
3K3
R932
1K8
1K8
R931
8K2
C912 220pF
R901
0
L901
0
0
C915
10nF
10nF
C914
10nF
10nF
D903
DX0539
R934
(TQ)
R935
(TQ)
TRC
8
9
10
6
11
5
7
1
12 13
D904
DX0600
DX0600
D906
DX0600
DX0600
D905
DX0600
R918
390
390
R913
390
390
C904
10uF
10uF
R936
47R
C905
.1uF
.1uF
(250V)
(FZ)
(FZ)
C909
470uF
470uF
(16V)
R909
120
120
R914
120
120
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1
2
3
4
OUT L
GND
GND
OUT R
+16V
+16V
-16V
-16V
+5V
23
24
25
26
MUTE
PROT
GND
GND
FRONT
C351
220uF
220uF
(25V)
R350
2K2
R353
150
150
R357
150
150
C350
100nF
100nF
C360
560pF
560pF
C375
560pF
560pF
C361
470nF
470nF
(FZ)
(SP)
QPLGN0441CEZZ
QPLGN0441CEZZ
C369
100pF
R356
10K
C367
100nF
C371
1nF
1nF
L316
3.3uH
(CF)
C378
220uF
220uF
(25V)
C379
100nF
L350
3.3uH
3.3uH
(CF)
C354
100pF
R352
12K
C359
4.7nF
4.7nF
C358
100nF
(FZ)
C357
1nF
1nF
C362
0.47uF
L351
3.3uH
(CF)
C363
220uF
220uF
(25V)
L315
3.3uH
(CF)
C366
100nF
100nF
C365
220uF
(25V)
C364
100nF
IC301
TDA7480
1
2
3
4
5
6
3
4
5
6
7
8
9
10
8
9
10
20
19
18
17
16
15
18
17
16
15
14
13
12
11
13
12
11
C368
100nF
(FZ)
C374
4.7nF
C376
470nF
470nF
(FZ)
L352
P0312
P0312
L353
P0312
P0312
R362
22K
22K
Q305
2SC2412
2SC2412
C372
0.47uF
0.47uF
C352
100nF
100nF
C377
1uF
R360
100K
100K
IC302
TDA7480
TDA7480
1
2
3
4
5
6
3
4
5
6
7
8
9
10
8
9
10
20
19
18
17
16
15
18
17
16
15
14
13
12
11
13
12
11
R351
27K
27K
JF17
JF12
R355
27K
(RA)
R358
100K
100K
(RA)
R359
100K
100K
(RA)
R381
15K
15K
R383
15K
15K
R382
18K
R380
18K
18K
Q306
2SA1037
R385
1M
D306
DX0551
R384
22K
22K
C1031
330uF
330uF
(6.3V)
R387
100
100
BM
C406
C353
100nF
C370
330nF
330nF
C356
330nF
330nF
C373
100nF
100nF
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5
QUICK REFERENCE DATA
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
V
P
supply voltage
notes 1 and 2
4.5
5.0
5.5
V
I
P
supply current
52
63
70
mA
Video part
V
i(VIF)(rms)
VIF input voltage sensitivity
(RMS value)
(RMS value)
−
1 dB video at output
−
60
100
µ
V
G
VIF(cr)
VIF gain control range
see Fig.7
60
66
−
dB
f
VIF
vision carrier operating frequencies
see Table 14
−
33.4
−
MHz
−
33.9
−
MHz
−
38.0
−
MHz
−
38.9
−
MHz
−
45.75
−
MHz
−
58.75
−
MHz
∆
f
VIF
VIF frequency window of digital
acquisition help
acquisition help
related to f
VIF
; see Fig.10
−
±
2.3
−
MHz
V
o(video)(p-p)
video signal output voltage
(peak-to-peak value)
(peak-to-peak value)
see Fig.5
normal mode
1.7
2.0
2.3
V
trap bypass mode
0.95
1.10
1.25
V
G
dif
differential gain
“CCIR 330”; note 3
B/G standard
−
−
5
%
L standard
−
−
7
%
ϕ
dif
differential phase
“CCIR 330”
−
2
4
deg
B
video(
−
1dB)
−
1 dB video bandwidth
trap bypass mode; AC load;
C
C
L
< 20 pF; R
L
> 1 k
Ω
5
6
−
MHz
B
video(
−
3dB)(trap)
−
3 dB video bandwidth including
sound carrier trap
note 4
f
trap
= 4.5 MHz
3.95
4.05
−
MHz
f
trap
= 5.5 MHz
4.90
5.00
−
MHz
f
trap
= 6.0 MHz
5.40
5.50
−
MHz
f
trap
= 6.5 MHz
5.50
5.95
−
MHz
α
SC1
trap attenuation at first sound
carrier
carrier
M/N standard
30
36
−
dB
B/G standard
30
36
−
dB
S/N
W(video)
weighted signal-to-noise ratio of
video signal
video signal
see Fig.11; note 5
56
59
−
dB
PSRR
CVBS
power supply ripple rejection at
pin CVBS
pin CVBS
f
ripple
= 70 Hz; see Fig.6;
note 6
20
25
−
dB
AFC
stps
AFC control steepness
definition:
∆
I
AFC
/
∆
f
VIF
0.85
1.05
1.25
µ
A/kHz
Audio part
V
o(AF)(rms)
AF output voltage (RMS value)
27 kHz FM deviation;
50
50
µ
s de-emphasis
430
540
650
mV
THD
total harmonic distortion of audio
signal
signal
FM: 27 kHz FM deviation;
50
50
µ
s de-emphasis
−
0.15
0.50
%
AM: m = 54%
−
0.5
1.0
%
*$
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Notes
1. Values of video and sound parameters can be decreased at V
P
= 4.5 V.
2. For applications without I
2
C-bus, the time constant (R
×
C) at the supply must be >1.2
µ
s (e.g. 1
Ω
and 2.2
µ
F).
3. Condition: luminance range (5 steps) from 0% to 100%.
4. AC load: C
L
< 20 pF and R
L
> 1 k
Ω
. The sound carrier frequencies (depending on the TV standard) are attenuated
by the integrated sound carrier traps (see Figs 13 to 18;
H (s)
is the absolute value of transfer function).
5. S/N
W(video)
is the ratio of the black-to-white amplitude to the black level noise voltage (RMS value measured on
pin CVBS). B = 5 MHz weighted in accordance with
“CCIR 567”.
6. Conditions: video signal, grey level, positive and negative modulation.
7. The intercarrier output signal at pin SIOMAD can be calculated by the following formula taking into account the
internal video signal with 1.1 V (p-p) as a reference:
(RMS), where:
is the correction term for RMS value,
is the sound-to-picture carrier ratio at pins VIF1 and VIF2 in dB, 6 dB is the correction term of internal
circuitry and
±
3 dB is the tolerance of video output and intercarrier output V
o(intc)(rms)
.
8. Pin REF is able to operate as a 1-pin crystal oscillator input as well as an external reference signal input, e.g. from
the tuning system.
B
AF(
−
3dB)
−
3 dB AF bandwidth
without de-emphasis;
dependent on FM-PLL filter
dependent on FM-PLL filter
80
100
−
kHz
S/N
W(AF)
weighted signal-to-noise ratio of
audio signal
audio signal
FM: 27 kHz FM deviation;
50
50
µ
s de-emphasis;
vision carrier unmodulated
52
56
−
dB
AM: m = 54%
45
50
−
dB
α
AM(sup)
AM suppression of
FM demodulator
FM demodulator
50
µ
s de-emphasis;
AM: f = 1 kHz and m = 54%;
referenced to 27 kHz
FM deviation
referenced to 27 kHz
FM deviation
40
46
−
dB
PSRR
AUD
power supply ripple rejection on
pin AUD
pin AUD
f
ripple
= 70 Hz; see Fig.6
for AM
20
26
−
dB
for FM
14
20
−
dB
V
o(intc)(rms)
IF intercarrier output level
(RMS value)
(RMS value)
QSS mode; SC
1
; SC
2
off
90
140
180
mV
L standard;
without modulation
without modulation
90
140
180
mV
intercarrier mode;
SC
SC
1
; SC
2
off; note 7
−
−
−
mV
Reference frequency
f
ref
reference signal frequency
note 8
−
4
−
MHz
V
ref(rms)
reference signal voltage
(RMS value)
(RMS value)
operation as input terminal
80
−
400
mV
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
V
o(intc)
1.1 V (p-p)
1
2 2
-----------
×
10
V
i SC
(
)
V
i PC
(
)
--------------- dB
(
)
6 dB
3 dB
±
+
20
----------------------------------------------------------------
×
=
1
2 2
-----------
V
i SC
(
)
V
i PC
(
)
--------------- dB
(
)
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