Panasonic RX-F20L - Page 10

RX-F20L
Notes:
1. $1-1~S1-10...Record/playback switch in “playback”
position. (1...Playback, 3...Record).
2. S$2-1~S2-4 ...Function switch in ‘“TAPE” position.
(1... TAPE, 2...RADIO, 3...SLEEP).
3. S3-1%S3-4 ...Mode/beat proof switch in ““AMBIENCE/III”’
position.
(1...MONO/1, 2...STEREO/I;
3... AMBIENCE/III).
4. S4-1~S4-4 ... Tape selector switch in “NORMAL”
position. (1...NORMAL, 2...CrO,, 3... METAL).
5. S5-1~S5-8 ...Band switch in “FM” position.
(1...FM, 2...LW, 3...MW, 4...SW).
6. S6-1,S6-2 ...Rec mute ON/OFF switch in “OFF”
position.
TEAST phew iene TPS switch.
8. S8-1~S8-4 ...DIN “ON/OFF” switch in “OFF” position.
(1...ON, 3...OFF).
O25S9) sam. Ytes Play ON/OFF switch in “OFF” position.
10. S10 oo... Motor ON/OFF switch in “OFF” position.
14. S11 auc FF, Rewind ON/OFF switch in “OFF”
position.
12. VR1..... ee VCO oscillator frequency adjustment VR.
13. VR101 ......... Balance control VR.
14. VR102 ......... Tone control VR.
15. VR103 ......... Volume control VR.
16. VR105......... Bias current adjustment VR.
17. The mark (W) shows test point e.g. W=test point 1.
18. DC voltage measurement are taken with electronics
voltmeter from negative terminal of battery.
< >...FM position, ( )...AM position,
< >...TPS, position, [ ]...Record position.
19. Battery current: No Signal ............:s cece eee ee eee e ees 96mA
Maximum output (radio) .......... 700mA
Maximum output (tape) .......... 840mA
Anode
Q1%6, 101~108,
201208, 301,
303, 304,
306308
Jee
D1, 2, 101~ 103,
201203, 301303,
305, 309, 318
Cathode
D304, 311
C1 AN7220B
IC4 AN7146M
RX-F20L RX-F20L
SCHEMATIC DIAGRAM MODEL RX
Ql a2 D3 D2 DI Q3 ICI Q5 Q6 a4
2SA1254 2SA1254 MVI2I| MA345 MAI65 2SC2206 AN7220 2SD636 2SB64| 2SD636 R
ee
FM
RF
AMP
FM
OSC/MIX
AOC
AFC
AGC
IF
AMP
FM/AM
IF
AMP
AM
OSC
TUNING
AMP
TUNING
AMP
AF
AMP
v CoIBP
2) (2 756
VR IOK(B)-
> da) a4) 41> a>
C46, 0.022
FINE
TUNING: #
2
S R103 (5K
CP2
R/p HEAD Vaow
2 ‘a ”
As
C1209; 00!
R31016,
RO.
0.001 Capg0.oor |
aa &
216
EXT MIC
Lch
J101
0.25mV
200~6000
Lch
504.7) R257 3.31 ‘
oO
ae
Nh
EXT MIC Rio 10K
R
ch
————
10K
J20t
O25mV
Se
u 8-3
O O
o 2
3
(200~600.2)
E HEAD Se-4 | DIO!I, 201 DI02,202 DIO3,203,303,318 Ic4
O MAI65 MAI50 MAI65 0309 0305
e ya. as ae Ld ere oe MAIO56 MAI65
DIN IN :027mV/27KQ. QUT: 420mv/470KQ AOC SWITCHING
D301 D302 Qlol, 201 Q102,202 Q103,203 Q30! Q302 Q104,105 , 204,205 DIO6 , 206 Q107,108 ,207, 208 Q303
MAI50 MAI65 2S0636 2SD636 2SD636 2SD636 2SCI583 2SD636 2SD636 2SD636 2SD636
SWITCHING SWITCHING EQ AMP SWITCHING REC AMP AGC AGC PRE AMP AMBIENCE AMP MUT ING TPS AMP