CX-JS3
20
20
J221
VH1, 2 (AC)
R-CH
PHONES
SPEAKER
+
–
–
+
R
L
J203
R-CH
R-CH
+VL
–VP
+VP
+VH
OVER LOAD
DETECT
Q129
OUTPUT LEVEL
DETECT
Q235
OVER CURRENT
DETECT
Q281
DC DETECT
Q063, 064
BIAS
Q117, 119
HOLD
Q045, 046
AC DETECT
D067, 068
THERMAL DETECT
Q291, 292
FEED BACK
SWITCH
Q643
+
FINAL DRIVE
Q121, 123
SWITCHING
Q232
SWITCHING
Q231
PROTECT
Q047
VH1, 2 (AC)
+
R-CH
R-CH
+
+
HOLD
Q282
+
TH101, 102
+
R-CH
R-CH
CASCADE
Q109, 111
PRE DRIVE
Q101, 103
MUTING
Q181
DBFB CONTROL
Q641
+
MUTING
CONTROL
Q183
CURRENT
MIRROR
Q105, 107
BOOST
CONTROL
Q674 – 677
FREQUENCY
CONTROL
Q671 – 673
R-CH
+VL
+VH
OUTPUT LEVEL
DETECT
Q233, 234
13
BASS BOOST ENHANCER
IC671
14
7
2
3
LCK
MUTE
POWER
POWER
HOLD
CLK
S-OUT
4
LM-L
LM-R
TM-L
TM-R
–27V
REGULATOR
Q041, 043
(AC IN)
POWER TRANSFORMER
(SUB)
PT011
POWER TRANSFORMER
(MAIN)
PT002
RECT
D015 – 018
+VL
TO
POWER AMP
BLOCK
–VL
VSS
RY001
VL1
VL2
VF1
TO
FLUORESCENT
INDICATOR TUBE
VF2
RECT
D009
+VH
–VH
+6.4V (CD)
CD-VM
VDD
VM
D691 – 694
–VFL
V-STBY
VH1
VH2
RECT
D019 – 022
VM1
VM2
RESET SWITCH
Q901
RELAY DRIVE
Q022
VCC
+4V
+3.3V (CD)
B+ SWITCH
Q023, 024
RECT
D091, 092
+3.3V
P-DOWN
RESET
D504
D697
R-CH
CD
SPEANA
TU
PB, REC
PB
REC
LM-L, LM-R,
TM-L, TM-R
CLK,
S-OUT, LCK
RESET,
P-DOWN
MUTE, POWER,
HOLD
• SIGNAL PATH
: TUNER
: TAPE PLAY (DECK-A)
: TAPE REC
: AUX IN
• R-ch is omitted due to same as L-ch.
: CD
J602
R
VIDEO/AUX
L
6-3.
BLOCK DIAGRAM – AMP/POWER SUPPLY Section –