Samsung SCM-7270 Service Manual page 55

KA9220(ASSP) : NIC9220
22 35 28 38 37 84 27 28 20 30 9 32 34 6 33 7
24
FVC
LOQP
21 FILTER COMPARATOR
VREOI
23
VREO
VREO & VIC
36
FBM
14
VCO VCO
N/C
1-TIME 2-TIMES
31
LOCK
12
SMPD
CLV
13
SMON
LPF
25
SMEF
55
DVCC (S)
Ð +
43
SPDI
DEFECT AMP
& COMPARATOR
44
SPDLO
WDCH 11
ARC AMP
FOK 59
N/C
4
RF AMP
LDON 60
65 66 67 78 70 71 75 74 69 73 74 76 62 61 68 79 80 1 33 57 56 19 18 17
LA4620 : AIC1
Samsung Electronics
EFM
TTL TO COMS
MICOM TO SERVO CONTROL
AUTO SEQUENCER
FS1 TG4 FM1 TG7
TG1 TG2
DEFECT AMP
& COMPARATOR
3
IN
5
4
IN
THERMAL
PROTECTION
6
CIRCUIT
9
IN
7
8
IN
2
3 2 5 8 41 40 39 42
COMS
TO
TTL
MIROR
AMP
&
COMPA
-RATOR
WINDOW
COMPARATOR
PS1 TG2
TRACKING
ERROR AMP
COMPENSATION
FOCUS
ERROR AMP
16
PRE
POWER
Driv
RL SHORT
PROTECTOR
PRE
POWER
Driv
POP NOISE
RIPPLE
PREVENTION
FILTER
CIRCUIT
PRE
POWER
Driv
RL SHORT
PROTECTOR
PRE
POWER
Driv
10 11
10
AVCC (S)
54
TDFCT
47
TKEI
48
TKEO
72
AVCC(RF)
15
TGSW
TRACKING
PHASE
COMPENSATION 16
RTG
50
ATS
51
TZC
52
TE2
53
TE1
FOCUS
49
N/C
PHASE
20 FSCH
58 FDFCT
FCE
45
46 FSEO
19
20
21
22
23
1
18
17
15
14
12
13
Block Diagrams
9-7