6.
Block Diagrams, Testpoint Overviews, and Waveforms
Block Diagram Tuner, Hercules and Audio
1302
UV1338
+5VSW
6,7
9
4
5
1
11
A 3
TUNER + VIF
TV
+VTUN
Sound
Tr aps
VIF2
VIF1
RF_AGC
25
24
31
30
29
7011 - IF
A2
QSS Mixer/
AM Demod.
61
62,63
49,50
34,35
56,57
A5
A2
A2
A2
SIDE I/O
D
7376-B
7377-B
53,54
HP_LROUT
SVHS _AV2_Y_CVBS_IN
SVHS_C_IN
7371
7910
3910
A6
TV SUPPLY
SC1_COMP_R_V_IN
SC1_FBL_IN
SSIF(Tuner FM)
33
A1
SDA
SCL
S Q
R
OSC
REF
5
1
2
3
4
29
31
+5VSW
VCC
6
7
7930
39
3
1
6930
59
31
8
7710
EXT_MUTE
7706
12
13
OUT_MUTE
3707
11
A2
POWER_DOWN
A6
A2
SOUND_ENABLE
SOUND_ENABLE
POR_AUDIO
A9
+3V3STBY
AUD_SUP
14
QSS/FM
AGC
De
3D
COMB
FILTER
tect
CVBS1
Input
sw.
INA..D
cvbs/y
c
Output
sw.
CS1A..D
cvbs
+
55
58
51
59
48
52
64
A1
1328
7
8
3311
2
3
2321
4327
4331
Dig. 2H/4H
Combfilter
Y Delay Adj.
PA L/NTSC/
SECAM
Decoder &
Baseband
Delay
Y
int
Chroma
U
int
V
int
RGB/YP
R
P
B
Insert
YUV Interface
78
79
80
77
74
75
76
Pix Improvement
(Histogram)
7560
70
71
72
Peaking
SCAVEM
U/V Delay
YUV IN/OUT
Skin Tone
U/V Tint
Saturation
RGB Matrix
Blue & Black
Stretch
Gamma Corr.
YUV
SAT
SCAVEM
on Text
RGB Matrix
Blue & Black
Stretch
Gamma Corr.
G_
O
S
D
R_
O
S
D
B_O
SD
F
a
st Bla
nking
CON
BRI
85
86
87
H/V
Sync Sep
H-OSC
H-Shift
H-Drive
Vertical & East-
West Geometry
H/V
66
67
HOUT
FB/SC
VDRB
VDRA
23
22
YO
U
T
UO
UT
VO
U
T
VI
N
UIN
YI
N
R/
P
r-3
INSS
W3
G/
Y3
B/Pb
-3
SC1_COMP_AV1_G_Y_CVBS_IN
SC1_COMP_B_U_IN
SC1_COMP_R_V_IN
SC1_COMP_AV1_G_Y_CVBS_IN
SC1_COMP_B_U_IN
EF
7013
EF
7014
EF
7012
RO
GO
BO
R_SDTV
G_SDTV
B_SDTV
SCL
SDA
6
8
9
16
17
19
14
11
20
L
VIDEO
R
A 3
A17
SC2_C_IN
SC2_CVBS_MON_OUT
SC
AV5_C_IN
1_CVBS_IN
SC2_Y_IN
SV
CVBS_COMB
YOUT_COMB
COUT_COMB
HS_AV2_Y_CVBS_IN
SVHS_C_IN
SVHS_C_IN
cvbs/y
CV
BS
/Y
-X
C-X
CVBS/Y- X
C-X
AD Conv
Std Stereo
Decoder
Audio Select
ADC/DAC
Audio
Control
Vol/Treb/
Bass
Features
DACs
I2S Proc
QSS/FM
SC1_COMP_AV1_LR_IN
SC2_LR_IN
SC1
AV1_CVBS_IN
SC1_CVBS_RF_OUT
STATUS_2
STATUS_1
SC1_CVBS_RF_OUT
SC1_CVBS_IN
_COMP_AV1_LR_IN
SC2_LR_IN
SC2_LR_MON_OUT
SC2_LR_MON_OUT
AM
SC1_COMP_AV1_LR_IN
Const_LR_OUT
SC1_LR_RF_OUT
SC2_LR_IN
SC2_LR_MON_OUT
7370
SVHS_LR_IN
AudioIN2LR
60
36,37
1:1
1:1
7372
7708
7376-A
7377-A
7714
7713
HP_LOUT
AUDOUTLSR
A
AUDIO_L
AUDIO_R
UDOUTL
I2SDI1
SL
2
6
7
1
77
3753
3752
40
7561
7563
+3V3STBY
HP_ROUT
6910
+VTUN
6911
5920
5930
+12VSW
+8VSW_TV
2921
7920
1
3
2
SC2_CVBS_RF_OUT
43
SVHS_LR_IN
HP_DET_IN
HP_LROUT
SVHS_LR_IN
HP_DET_IN
36
45
A5
A5
VCC
TR
DISC
CTRL
RES
OUT
THR
2028
7018
30
21
2051
7016#
VCC
TR
DISC
CTRL
RES
OUT
THR
2021
3347
2042
7015#
VCC
TR
DISC
CTRL
RES
OUT
THR
2047
3346
2034
7017#
2020
H_CS_SDTV
7019
2022
7004
5010
2055
V_SDTV
SANDCASTLE
+5VSW
+5VSW
# = NE555 TIMER
8
2
4
3
5
7
6
8
2
4
3
7
6
8
2
4
3
6
7
5
5
30
10
A3
HISTOGRAM
3058
SAND
CASTLE
SANDCASTLE
1
A2
HERCULES
AUDIO
AMPLIFIER
SA3
AUDIO
A13
A13
A13
A13
A13
A1
N.C.
N.C.
2
7011 - SOUND
SYSTEM
7011
NTSC
TDA15021H
HERCULES
COMP
AIR
1301
1
2
3
Y_NOTCH
A7
REAR IO SCART
2561
7562
1
3
2
+12VSW
F306
F915
F912
F913
I357
E_14710_084.eps
281204
2
5
SVHS
CVBS
L
2
6
R
8
7
10
11
4
2
6
8
7
10
11
4
0936
1336
1
3
4
9
1739
SC
PROC.
A4
AUDIO DELAY LINE (LIPSYNC)
8x
8x
15
I2SCLK
7x
7x
RAM
COUNTER
COUNTER
"D" F.F.
"D" F.F.
7584
7583
7582
7581
7580
7585
NC
8x
2
7x
8x
8x
4590
PWM
-16V-19V
-16V-19V
I722
18
3
24
22
+16 +19V
2
4
10
6
I778
3
1
1735
1736
-16V-19V
+16V+19V
23
I776
3
1
5702
5701
OSC
STBY-
MUTE
7700
TDA7490
PWM
PROT
+16V+19V
+16V+19V
3717
3718
I711
7701 : 7707
SOUND_
ENABLE
POR-AUDIO
SOUND_ENABLE
PROTECT_AUDIO
N.C.
N.C.
AUDIO_R
AUDIO_L
POR_CLASSD
AUDIO_R
AUDIO_L
PROT1
SOUND
ENABLE
15W/
8R
15W/
8R
L
R
8
7
6
1
4
5
3
2
9
8
7
6
1
4
5
3
2
1752
3
3D COMB FILTER
CB
FRONT_DETECT
L
R
Y/CVBS
C
TDA9178T
I2SDO
I354
I357
I354
1V
/ div DC
5ms
/ div
1V
/ div DC
20us
/ div
N.C.
MON.
OUT
L
C
Y
VIDEO
R
AV2
1801
7240
7225
7241
3
8
9
2004
3
8
9
V
U
Y
R
L
VIDEO
AV1
SVHS
7226/7227
EF
7228
EF
