Sony HCD-EP707 - BLOCK DIAGRAM - TAPE DECK SECTION

1717
HCD-EP707
5-2. BLOCK DIAGRAM – TAPE DECK Section –
: RECORD
: TAPE PLAY
ALC,
REC/PB AMP
IC208
R-CH
L-CH
HPRE201 (1/2)
(RECORD/PLAYBACK)
R-CH
R-CH
5
1
2
3
(PROTECT (FWD) DETECT)
(PROTECT (REV) DETECT)
(TAPE DETECT)
(CrO
2 DETECT)
REC
MUTING
Q243
PB
MUTING
Q247
REC/PB
SWITCH
Q246
AMP GAIN
CONTROL
Q242
ALC
SWITCH
Q239
ALC
BIAS
TRAP
CAPSTAN/REEL
MOTOR DRIVE
Q217, 218
REC IN
44
AMS
28
REC SW(FWD)
61
REC SW(RVS)
HALF-SW
59
MODE-SW
57
R-CH
BIAS OSC
T201
12V
REC BIAS
SWITCH
Q226, 227
REC/PB
SWITCH
Q223
REC/PB
SWITCH
Q229, 239
REC/PB
SWITCH
Q220, 221
M
(CAPSTAN/REEL)
TRIGGER
PLUNGER DRIVE
Q215, 216
(TRIGGER PLUNGER)
SYSTEM CONTROLLER
IC101 (1/3)
R-CH
R-CH
R-CH
R-CH
R-CH
(HEAD POSITION DETECT)
R-CH
TL-CH
TR-CH
RL-CH
RR-CH
C
(Page 18)
D
(Page 18)
TROUT
6
V. N
1
AMS
IC209
HPRE201 (2/2)
(ERASE)
BUFFER
Q219
TAPE PLAY/REC DETECT
SENSOR
MUTING
Q241
TAPE TYPE
SELECT SWITCH
Q240
62
BIAS OSC
Q228
OUT1
ALC
IN1
NF1
• SIGNAL PATH
• R-ch is omitted due to same as L-ch.
SOL, REC_EN,
MOTOR_ON
E
(Page 18)
REC_EN
SOL
MOTOR_ON
Q225 Q222Q224
AMP GAIN
CONTROL
Q256
D210
R-CH