Read Sony CMT-EP505 / HCD-EP505 Service Manual online
HCD-EP505
16
16
: RECORD
: TAPE PLAY
REC/PB SWITCHING
U601
(AEP, UK, CH) (EXCEPT AEP, UK, CH)
ALC,
REC/PB AMP
U602
(AEP, UK, CH) (EXCEPT AEP, UK, CH)
R-CH
Q618
R-CH
L-CH
HPRE101 (1/2)
(RECORD/PLAYBACK)
R-CH
R-CH
REC-EN
16
2
6
7
3
4
4
8
7
9
(PROTECT (FWD) DETECT)
(PROTECT (REV) DETECT)
(TAPE DETECT)
(CrO
2
DETECT)
REC/PB
SWITCH
Q605
REC/PB
SWITCH
Q601
AMP GAIN
CONTROL
Q603
ALC
CONTROL
Q619
ALC
BIAS
TRAP
CAPSTAN/REEL
MOTOR DRIVE
Q620, 621
SENSORA
90
AMS
96
SEL14
70
SEL15
SEL12
68
SEL10
66
BIAS OSC
L603
9V
REC BIAS
SWITCH
Q617, 618
M
(CAPSTAN/REEL)
SOL
93
TRIGGER
PLUNGER DRIVE
Q622, 624
(TRIGGER PLUNGER)
REC-LED
18
LED
DRIVE
Q305
D313
SYSTEM CONTROLLER
IC301 (1/3)
R-CH
R-CH
R-CH
R-CH
R-CH
R-CH
(HEAD POSITION DETECT)
MOTOR-ON
95
CD-EN 92
TU-EN
CD-EN
TU-EN
94
D305
D306
D308
D603
D601
TIME
13
LED
DRIVE
Q304
D312
I
(Page 18)
TL-CH
TR-CH
RL-CH
RR-CH
F
(Page 17)
TROUT
6
V.N
1
AMS
U603
(AEP, UK, CH) (EXCEPT AEP, UK, CH)
HPRE101 (2/2)
(ERASE)
SWITCHING
R-CH
z
TIMER
BUFFER
Q625
BUFFER
Q613
TAPE PLAY/REC DETECT
SENSOR
REC AMP
Q611
MUTING
Q607
TAPE TYPE
SELECT SWITCH
Q609
G
(Page 18)
71
BIAS OSC
Q615
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 –
Ver 1.1
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