Block Diagram -Main Section - Sony PMC-107 Service Manual

5-4. BLOCK DIAGRAM — MAIN SECTION —
1
HRP301 CD SECTION
RECORD/PLAYBACK
HEAD
SW301-2
L-CH
PB REC
R-CH
R-CH
VREF
T301
REC
BIAS
BIAS
Q303
VREF
Q301, 316
VREF
M301
CAPSTAN /REEL
MOTOR
55
M
S301
(MD POWER) +8V
S302
62 T-PLAY
(MD PLAY)
23–20
CT2
LPF
D5
Q11
+8V
REG
Q12
L9
D302
(AM ANT)
PON+B
FM
CT4
LEAD
ANTENNA
FM
FL1
BPF
CNP1
AM
LOOP
ANTENNA
AM
04
PRE-AMP
CDIN1
IC301
CD L-CH 22
PBIN1 OUT1
5
ALC AMP
REC1
4
SW301-1
PB REC
OSC
+5V
P/R SEL
21 CONTROL
VREF 6 VREF
24 15
REC
REC/PB
CONTROL
PB
Q302, 315
52
SYSTEM CONTROL/LCD DRIVE
19–1, 80–78 70 69 68 57 30•31 72 74
X801
4.19MHz
X802
LCD801
32.768KHz
CLOCK
SHIFT
Q804
4 5 6 7
PLL
IC2
21 PD1
16 17 1 2 9
L2
Q10
X1
75KHz
22 19 14
FM/AM FRONT-END, IF DET,
AM FM STEREO DEMODULATOR
IC1
OSC
AMP
AM RF
Q1 CFT1
AM
24 3 7
MIX
FM
MIX
FM
FM
6
OSC Q20
RF
1
23 21
CT1
D3 D4 CF1 CF2
L5 L6
– 25 –
VOLUME/SOUND CONTROL
POWER AMP
IC302
OUT2
IN2
20 31 SURROUND TONE VOL 24 2
VC
CONTROL 23
Q304
POWER AMP
TU 5V
13 12 20 19 18 21
17
MUTE
CONTROL
Q305, 317
49 48 50 47
IC801 (2/2)
76 32 58 67 35–38 61
Q805
RESET
IC804 D806, 807
CLOCK
SW801
SHIFT
Q803 |
COM 5V
SW819
Q15
14 8
Q8
18 15 10
IF
BUFFER
AM
DET
H. FREQ.
AF FM
17 CUT 16 MUTE
BUFFER MPX
Q7
FM
DET IF CUT
9 13 18
CF3 CF4
H. FREQ.
IF CUT
Q9
IC303 R-CH
R-CH
J302
PHONES
12
STBY
5
SP301
SPEAKER
(L-CH)
CONTROL
Q313, 314
+5V
TUNER 5V
TU 5V SWITCH
Q306
60
RADIO 53
CD 5V
CD 5V SWITCH
Q307
CD 54
+8V
D801
OPERATION
42
28 51
LED/LAMP
DRIVE
Q806
SIRCS
RECEIVER
IC803
D802
COM 5V
D805
B+ SWITCH
VDD 5V
Q801, 802
D804
R
12 R-CH
L
11
Q13
MUTE
CONTROL
Q16, 17
– 26 –
PMC-107
VCC
5V REG
Q308
8V REG
Q309, 310
POWER ON
SWITCH
Q311, 312
T901
POWER
TRANSFORMER
+5V REG RECT
IC802 D901–904
AC IN
D905
Signal path
: FM
: AM
: PLAY
: REC
: CD
R-ch : same as L-ch.