Block Diagram - Tape Deck Section - Sony HCD-EP707 Service Manual

5-2. BLOCK DIAGRAM – TAPE DECK Section –
HPRE201 (1/2)
(RECORD/PLAYBACK)
L-CH
R-CH R-CH
BIAS
TRAP
REC/PB
SWITCH
R-CH R-CH
Q229, 239
REC/PB
SWITCH
Q220, 221
REC BIAS
SWITCH
Q226, 227
HPRE201 (2/2)
BIAS OSC
(ERASE)
T201
BIAS OSC
Q228
• R-ch is omitted due to same as L-ch.
• SIGNAL PATH
: TAPE PLAY
: RECORD
AMP GAIN
CONTROL
Q256
AMP GAIN
CONTROL
Q242
R-CH
1
OUT1
IN1
2
R-CH
ALC
ALC
5
ALC,
REC/PB AMP
ALC
D210 IC208
PB
SWITCH
MUTING
Q239
Q247
REC/PB
SWITCH
Q246
REC/PB
12V
SWITCH
Q223
Q225 Q224 Q222
R-CH REC
MUTING
Q243
R-CH
3
MUTING
Q241
6 TROUT
(CrO 2 DETECT)
(HEAD POSITION DETECT)
(TAPE DETECT)
(PROTECT (FWD) DETECT)
(PROTECT (REV) DETECT)
TAPE PLAY/REC DETECT
SENSOR
M
(CAPSTAN/REEL)
(TRIGGER PLUNGER)
17 17
RL-CH
RR-CH
R-CH
TL-CH
TR-CH
R-CH
TAPE TYPE
SELECT SWITCH
Q240
AMS
R-CH
IC209
V.N 1
SYSTEM CONTROLLER
IC101 (1/3)
BUFFER
Q219
57 MODE-SW
59 HALF-SW
61 REC SW(FWD)
62 REC SW(RVS)
44 REC IN
28 AMS
CAPSTAN/REEL
SOL
MOTOR DRIVE
Q217, 218
TRIGGER
MOTOR_ON
PLUNGER DRIVE
Q215, 216
REC_EN
HCD-EP707
C
(Page 18)
D
(Page 18)
SOL, REC_EN,
MOTOR_ON
E (Page 18)