Schematic Circuit Diagram (Kex-73) - Pioneer KEX-70 Service Manual

1 2
7. SCHEMATIC CIRCUIT DIAGRAM (KEX-73)
FM FRONT END UNIT ( CWB-079)
Re
ton
cole
(en) Ga) eutut
e . 4 4
Eosod
RY
Lis
ante
D1~ 3: ITT310-PF, PE
L2
QI: POO! or SO306PA
Q2: 2SC1674-M
i
(SHH
——<——
o
ve
IF MUTE
B FM vco
Q5,6: 2SC460-B or 2SC 2839-0
TUNER CONTROL UNIT ( CWM-073)
1C2:LA3370P
5
CT
Q9, 10: 2SCI7T40LN-R , 2SC945)
2.46 270p 270
VR4 : CCP-144
B.4v
Q45: 2SCI545-A Q44, 39: 2SCIBIS-Y or 25€945-Q Q36: 2SA720-R or 2SA673A-C
het a3a(ed) 25v
040
n RIGO
cqqm tk
47/16 'eo
2.2750
C73
oq 4.7/3
ad
C7
0.01:
C72
0.01!
VR2:CCP-145
016, 17,14~ 21, 25, 26,2
181555, IS207€
Q47: 2SCIS45—-A
37: - a
046: 2SK40-FI Q37: 2SCI3I8—-R_ or 2SCIZ1I3A-C
Q38: 2SCIBI5— Y or 2SC945-Q
Q43: 2SC202I-R
Ql: 2sc202!I-s
R2
10k
01,2, 2~14: 182222
D3, 6~ 11: 1S1555 oF 1S2076
04,5,15: SVC3ZISP
SWITCH UNIT
( CWS-103 )
NOR FF REV RIEW
Q8: 2SKIQ-Y
Q49: 28C2839-E
'J om
(BI
ccp-14a
CH3_ CH4 CHS
Q7: 2Sci8IS— 0
28C 2458-0
R2q
4708
@ ® @
. OOLBY NR
- _ ~- STEREO -
DIRECTION
FF REW
CHI
A
is
| rs~*d
Ce ~~
24°
e, | Gt asl GRAY
SEEK REMOTE
040,41: 181886 or wi
ap
[+ . dd &
cng
0.33/80 s2-4
R Is LOUDNESS '
Q42:2SC 2021-R
Q14 ~ 16: 2SCI8IS—Y or 28C945-Q
IS]
ree ee
Ras Raa
S6k 22k
Q33~35:2SC202I-R
$2-1
Oo
rd CLOCK
O
Q25~30: 2SA790-A
Q31,32: 2SC202I-R
oO
n a