Read Sony CMT-EP50LIV / HCD-EP50LIV Service Manual online
HCD-EP50LIV
16
16
: RECORD
: TAPE PLAY
Q5
REC/PB SWITCHING
U12
ALC,
REC/PB AMP
U13
R-CH
Q36
R-CH
L-CH
HPRE101 (1/2)
(RECORD/PLAYBACK)
R-CH
R-CH
14
Q1
4
STR
1
2
6
7
3
4
4
8
7
9
(PROTECT (FWD) DETECT)
(PROTECT (REV) DETECT)
(TAPE DETECT)
(CrO
2
DETECT)
REC/PB
SWITCH
Q34
REC/PB
SWITCH
Q30
AMP GAIN
CONTROL
Q28
ALC
CONTROL
Q8
ALC
BIAS
TRAP
CAPSTAN/REEL
MOTOR DRIVE
Q37, 39
SENSORA
18
AMS
24
SEL14
98
SEL15
SEL12
96
SEL10
94
BIAS OSC
L5
9V
+5V
REC BIAS
SWITCH
Q32, 33
M
(CAPSTAN/REEL)
Q7
12
TRIGGER
PLUNGER DRIVE
Q38, 40
(TRIGGER PLUNGER)
Q3
6
LED
DRIVE
Q305
D313
SW318
(MONO STEREO)
CAPSTAN/REEL MOTOR CONTROL,
TRIGGER PLUNGER CONTROL,
REC BIAS CONTROL
U15
SYSTEM CONTROLLER
IC301 (1/3)
R-CH
R-CH
R-CH
R-CH
R-CH
R-CH
(HEAD POSITION DETECT)
STROBE
44
DATA
2
CLK
3
Q8 11
Q6
CD-EN
TU-EN
ST/BEAT
DA IN
CLOCK
13
D305
D306
D308
D29
D50
D4
D32
Q4
7
LED
DRIVE
Q304
D312
I
(Page 18)
C
(Page 15)
H
(Page 17)
TL-CH
TR-CH
RL-CH
RR-CH
F
(Page 17)
TROUT
6
V.N
1
AMS
U14
HPRE101 (2/2)
(ERASE)
SWITCHING
R-CH
ISS SWITCHING
Q41
z
TIMER
ISS
2 1
STEREO MONO
BUFFER
Q14
TAPE PLAY/REC DETECT
SENSOR
REC AMP
Q25
MUTING
Q26
TAPE TYPE
SELECT SWITCH
Q45
G
(Page 18)
99
BIAS OSC
Q31
ALC
IN1
OUT1
ALC
CONST
IN1
NF1
• SIGNAL PATH
• R-ch is omitted due to same as L-ch.
6-2.
BLOCK DIAGRAM – TAPE DECK Section –
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