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HCD-NE3
16
16
6-2.
BLOCK DIAGRAM – MAIN Section –
AC
DETECT
Q333, 338
R-CH
+
REC/PB
SWITCH
Q326 – 332
R-CH
CD
•
SIGNAL PATH
: CD PLAY
: TAPE PLAY
: REC
•
R-ch is omitted due to same as L-ch.
: TUNER
J303
R
MD
L
: AUX IN
J301
PHONES
SPEAKER
IMPEDANCE
USE 6 – 16
Ω
+
–
–
+
R
L
J302
FM/AM TUNER PACK
TU-LCH
TU-RCH
TU-CE
CE
R-CH
TUNED
TUNED
STEREO
STEREO
MUTE
TU-MUTING
TU-DI
DO
TU-DO
DI
TU-CL
CLK
CE
TUNED
STEREO
DO
DI
CLK
BIAS OSC
T301
REC BIAS
SWITCH
Q346 – 348
B +10V
BIAS OSC
Q344, 345
ERASE
HRPE301
(REC/PB/ERASE)
TAPE MECHANISM
DECK BLOCK
L-CH
R-CH
R-CH
DC
DETECT
Q342, 343
+
TU-MUTING
18
99
CAPSTAN/REEL
MOTOR DRIVE
Q804, 805
PLUNGER
DRIVE
Q802, 803
M M
(CAPSTAN/REEL)
(DECK-A)
SOL 9V
MOTOR 9V
PACK
REC
PLAY SW
FWD SW
(EXCEPT E, E51, EA, SP)
(EXCEPT E, E51, EA, SP)
(E, E51, EA, SP)
D307
(AC IN)
SUB POWER
TRANSFORMER
T901
MAIN POWER
TRANSFORMER
T902
SYS +3.2V
SYS +3.1V
RECT
D913, 914
D810
D809
D923, 924
D922
D920, 921
AMP B+
TO
POWER AMP
AMP B–
VOLTAGE
SELECTOR
S901
VM +10V
+3.9V
REGULATOR
Q312 – 314
RECT
D916, 917
RECT
D918, 919
RECT
D907 – 910
SYS +3.3V
AM
ANTENNA
FM ANT
AM ANT
ANT GND
ANT GND
FM 75
Ω
COAXIAL
MAIN POWER
RELAY DRIVE
Q311, 315
+3.3V
REGULATOR
Q339
+3.3V
REGULATOR
Q317
M +7V
D +3.3V
B+ SWITCH
Q319, 320
39
LED DRIVE
Q806
D806
(STANDBY)
97
LED DRIVE
Q808
D701 – 703
(LCD BACK LIGHT)
X801
32.768kHz
X802
10MHz
FL801
FLUORESCENT
INDICATOR TUBE
4 CD OPEN
ROTARY
ENCODER
RV801
VOLUME
S801 – 813
(FRONT PANEL KEYS)
S820
(CD LID OPEN/CLOSE DETECT)
RESET SWITCH
Q801
RY901