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RX-C300
RX-C300
IC1 02
RVIBA338
Notes:
5
Ref No.
Zone
Part No.
Function Name
SENSE TIMING
PULSE WIDTH vec
1. S1:
Forward switch.
iain
i
ae
amid
116,124,132,
5
:
F
:
penne
Sor
ERD2Fsi02 | 216,224,282
ECFTIE473KD
saclaue
2. S2: Reverse switch.
Ic102
E.7
RVIBAS38
TPS
apn n
19,219,309
ECFT1E472KD
3. S3: Fast forward switch
Ic103
B+9
RVILM1131C
DOLBY
362,432,532
ERDS2TJ473
353,624,678
ERD25FU561
| C119,219,309
.
$ 3 :
i
.
teed
ae
Divi
NEGREONT
R3,4,109,123,
R370
ERC12ZGM335
bated
lhe ae
4. S4: Rewind switch.
1C902
Fea
DN6s38A
DIRECTION DET.
8 209.223.
R4
DS2TJ474
127,222,223,226,
f
aio1
Aed
2SC1845E
SWITCHING
128,209,228,
ees
227 349
ECEA1EU4R7
5. $5: Rec mute switch.
aioe
As?
28C1845E
SWITCHING
Saree
ete
507,600,652,653
130,230
ECKD1H222MD
6. S6: Stop switch
Q103
Ae2
2SC1788RDR1
pate
sai?
' A E E
RERIBE?:
f
a
S o e
.
104
Acé
28C1740R
wi
R7,59
ERDS2TJ330
B51,655,656,694,
pba
pase
7. S7: Blank skip switch.
ios
D6
28C1740S
AF AMP
RB, 18,20,22,26,
658,659
ERDS2TJ124
| C1S3.288
cclilaamaaaiaad
-R
d
itch in"
t two-side
playback or
Q106
D+10
28C1740R
SWITCHING
33,418,518
= ERDS2TJ101 | R404,504,673,
eee
8. S8~S10:
Reverse mode
switch in "repea
play
107
De10
28C1740R
SWITCHING
R9,10,108,208,
903
ERDS2TJ393
345
ee
two-side recording" position.
Q108
+11
28C1740R
RECMUTE
Rit a2s 16,47 leila
R408,417,508,
iss
re
ECPoAt 82JZ
(S8...repeat two-side playback or two-side recording, S9...two-
aie
Belt
28C1740R
SWITCHING
1,122,125,
as
BRDS2
306
ECGP2A103)2
side playback or two-side recording, $10...one-side playback or
an
Bei
28C1740R
SWITCHING
60,61,122,125,
R413,513
ERDS2TJ823
C307,327,335
ECEA1AU221
NOISE FILTER
= GND
our
Q112
Be12
28C1740S
pala
130,134,140,145,
R433,533
ERDS2TJ181
ah
:
one-side recording)
201
Be2
2SC1845E
reranten
reIs Dg
Geieazs
-ECEATAUArI
9. S11: Rec switch
eb
ee
ee
pate ogee
eb 628,092 687,
C317
RCBS1C472MXY
,
'
sal
a204
Be6
2SC1740R
SWITCHING
emersaaney
CA2,650
ERDS2TJ334
| 318,330,333 | ECEA1AU470
10. S12: Dolby NR switch.
205
C.6
28C17408
AF AMP
349,355,649,672,
R609,619
ERDS2TJ182
Lana
IC1 03 RVILM1
1 31 Gc
_D-
;
i n
"OFF"
iti
Q206
Ae10
2SC1740R
SWITCHING
C320,322,653,
11. $14-1,$14-2:
Power switch in
position.
685,689,692,912 ERDS2TJ103
R622
ERDS2TJ184
cane
HUR22
SENSE TIMING
PULSE WIDTH vec
;
:
Q207
As10
28C1740R
SWITCHING
R13,14,48,52,53,
R625
ERDS2TJse4
| 654
ECEA!
12. S15: AC/DC selector switch.
208
E40
28C1740R
REC MUTE
ee
RedSove
enDsaTzod_ | CHIREIOO0 ECE Nan
18. S16: Voltage selector
switch. fi] (For U.S.A)
ora
emery) ia eee
226,313,347,
7
ERD2FCJ3R3P
:
:
:
D e
cias
3
:
354,365,410,
Bere
ERDS2TJ222
'| ©344,643,661,
14. S17-1~S17-4: Tape selector switch in "NORMAL"
position.
Get
Beit
ac i708
Swnraane
ro iad
ERDS2TU104
Rene
ERDS25F ro
im
Spor
(1...NORMAL, 2...CrOz, 3...METAL)
Q301
C2
2SC1740S
MUTING
669
R695
ERDS2TJ220
Th
s s tie a h s
k e
"
ee
Q302
E63
28C1740S
SWITCHING
R17
ERGIANJP101 | 901,910,911
ERDS2TJ102
| C347.981,628
REBSIHTONES
15. S18: Timer standby switch in "OFF" position.
aero
na
paar
pane
R19,41,54,55
ERDS2TU224
R902
ERDS2TJ683
ee ss
oe siete
(1...PLAY, 2...OFF, 3...RECORD)
304
Dea
282001
BIAS OSC
R21,45,58,63,
pare
iataceh ica
380
RCBS1H100JC
16. S901, S902:
Rec check switch.
Q306
De4
2SC1740LNR
MIX AMP
357,674,
ERDS2Tu470
| 904,905,906,
Be
ae int
;
:
esos
ae
eed ors
ee aap
R24,112,131,
907,908,909,913 ERDS2TJ472
Sy
ashen eceninnin
17. S903: Mode switch.
asne
qa
Berean
SWITCHING
RDS2TJ684
| A912
ERDS2TJ103
502,504,
:
;
:
Q309
F +7
28C1740R
ce 318
e
RO14
ERDS2TJ682
405,410,505
ECFT1E473MD
18. VR100, 200: Playback level adjustment
ose
ces
pat
ea
pale
335,676
ERDS2TJ471
VR101, 201: Bias current adjustment.
te
ar
ees
necuLaTER
4
:
:
.
2SC1740R
SWITCH
R27,42,108,
CAPACITORS
Carer
ECeTI Speen
NOISE FINE By ENO
eu
VR102, 202: Overall gain adjustment.
eae
ant
28C1740R
SWITCHING
734,100,101
we
Loe
2
€408,508
ECEA1HUR22
VR302: Erase current adjustment.
gate
pez
2801740
SWITCHING
103, 104,111,200,
es
" ECKD1H103MD
oe 511
meer alain
19. DC voltage measurements are taken with electronics voltmeter
Q320
Ho13.
2SA886R
REGULATER
'
'
;
:
321
He13
2SC1740R
REGULA
pelicon pened
eS i
ine
RCBSIHSROKL | C419512
ECFT1E223MD
from negative terminal of battery.
ae
Bel
Pa
SwreHine
L A
eet
l e l
,7,90,64,65,
413,513,522,
H
i
Q323
H-9
28C1740R
SWITCHING
627
ERDS2TJ222
| 602,607,610,613, ECEAICU100
e ' 35
ieee
<
>...-Recording, [ ]...No signal,
:
ase
Hg
perce
alee
Pe
atk
C8,73,74,657
ECCDIHIOIK | C414 415,514
(_ )...Signaled,
<< >>...atthe "OFF" moment,
eet
ie
2sorraan
ara
605,607,616,
Pea
w e y
Q901
Go4
2
617,623,630,631,
oth ms tea 518 ECGMIHDeTe
| 18
ECEA1CU470
e...Dolby ON, ©...Dolby off, ((_ ))...recorded part
oe
en
ee
SWITCHING
12,418,518,
F
—
'
T
636,644,661,662,
642,660,906,914 ECKDIH471KB | c416.516,626 | ECEAQJU470
{[_ ]]..-unrecorded part, © ... Pully—moving,
(0... Pulley—stop
30s
G2
2SAIt1SE
SWITCHING
663,664,665,666,
C13,14,45,46,60,
C417.517
ECEA1VU101
20. Battery current: No signal...280 mA (display off)
a906
G2
2SB621R
SWITCHING
ee
EnDS2T 62
| 92
ECEAIHU4R7 =| 419,426,519,
A (disol
D101
C8
MA165
SWITCHING
R87,56,57,
526.
|
|
~=«-ECQG1H104KZ
450 mA
(display on)
D102
Deg
MA165
RECTIFIER
141,142,241 242,
C15,16,61,66
ECFTIE103MD
| G459 402.500
Maximum output...3A (radio)
D103
D9
MA165
RECTIFIER
323,336,358,647,
C17,18,36
ECFT1E333MD
a e
e e
D201
Be8
MA165
SWITCHING
23.
522,665
ECQV1H223J2
2.8A (playback)
D202
Ac9
MA165
RECTIFIER
901,910,911
ERDS2TJ102
C19,78,303,
423,523,524
ECEA1CU330
°
ates
Ae
Mies
BeeueR
mee
ERDS2TJ821
| 668,669,672
ECEAQJU101—
| C475.505
ECEA1EN220
2.7A (recording)
Babi
C.3
MAI6S
SWITCHING
C€20,22,37,38,
C509
RCBS1C472MX
D302
Ce3
MA165
SWITCHING
R40,312,319,
659,673,911
ECKD1H102MD | Cé09 601
ECQV1H154JZ
D303
He
LNO41245P
LED
368,371,606,671 ERDS2TJ221
pare
SCRALAUIT
so
hee
[NOAIDAED
LED
R43,50,113,
C21
ECCD1H180KC
C604
ECEA0JU101
Bae
ne
CNBAoee
i
213,321 322,344,
C23,27
RCBS1H180JC
| CEs ggg
ECQV1H823UZ
D0?
Fe
MA165
SWITCHING
oie
scl
24,51
ECCDIH470KC | ceog.609
ECQM1H223JNV
D308
He7
MA165
SWITCHING
SE PtG Cee
eeooeriss! _ 1 C26
ECCD1HO30CC | c¢11'612
ECQM1H822JV
D309
G7
MA165
SWITCHING
R44,115,137,
C29
ECCDIHOSODC
| 6614'617,.618
D310
He7
MA165
SWITCHING
215,237,
ERDS2TJ822
| C32510,655,
a i i
asa erento
perp
Hee
aes
ela
R46,316,327,406
Gel
D312
He8
MA165
SWITCHING
Peper
656
ECFTIE473MD | c615,616
ECQM1H222JV
409,412,415,506,
i
D313
He8
MA165,
SWITCHING
512,515,641.
CAD,67,68,72,75,
C619,620
ECQP2A821JZ
D314
E68
MA165
SWITCHING
509,512,515,641 ERDS2TJ682
| 76.77.370
eckpintoszr | 0619.620
SreSeyeecdicd
bard
E+8
MAI6S
SWITCHING
Sao
ape
C627
ECFT1C333MD
wz» ...Record
===ms ...@ Voltage line
0316
Hie
MAt65
SWITCHING
oat
63,901
ECEA1HU010
A1CU102
PI
i
D317
E-9
MA165
SWITCHING
227,346,367,670,
C47,48,53,54
ECFTIEZ2aMD | COS
taper
——» «.-Playback
;
===
...@ Voltage line
psi
ee
Maree
SWITCHING
690
ERDS2TU333 | cag
ECFTIE1S3MD | Goa,'
ECEHICIGAID
==» -.-Tape/Phono/Radio/CD/
Using with AC cord: AC
ee
mak
ie Naa
pa cae
ee
aes
See,
|,case
ECEA1AU101
LINE IN
Using with DC IN or battery: DC
|psze
Delt
MA165
SWITCHING
piel
cs6
ECCD1H331K
C648
ECEA1EU330
D323
Dett
MA165
SWITCHING
621,020,040
BADS24i272
cs7
ECEA1AU101
C649
ECEA1HU4R7
D324
Dell
MA165
SWITCHING
R116,216,681,
C58
ECQGIH102KZ | CEs
ECEA1AU221
D325
C12
MA165
SWITCHING
682
ERDS2TJ122
c59
ECEA0JU221
C651
ECEA1AU102
D326
Het2
MA165
SWITCHING
Coe
ECEAQUW7O | Gasp
_—ECFTTESEOMD
IC901 LM6417E543
Geer
ame,
Sale
R118,218,604,
79,907
ECCDIH221K
| Gogg
ECEA1CU470
nee
a
ae
Pema
608,615,618,629 ERDS2TJ274
ECQV1H102MD
| Goo3
ECSF1AE106
Pca: SCAN @2
G) ppo: TPSIN
D332
He9
M165
SWITCHING
119,143,219,
100,200
ECEA50MiR
eo0e
RCBSIC1O3NY
:
IC902 DN6838A
Baas
a
ige
SWCHING
243,302,342,352,
C101,110,125,
Coos
ECEA1CU101
PC2: SCAN @?)
(2) PD1: REC STANDBY LED
Basi
Gis
MAaOESM:
REGULATER
405,505
ERDS2TJ223
135,201 210,225,
c9i1
ECKD1H152MD
PC1: SCAN
() PD2: REV PLAY LED
11.Vee
D902
Fe4
RVD1SS133
SwircHaNa
B20
Ses Ses
235,310,324,339 ECEA1HU010
RCBS1H102KB
PCO: SCAN (19)
(4) PD3: FORWARD PLAY LED
D903
Ge3
RVD1SS133
sw
220,238,239
ERDS2TJ332
SiH22ikB | C912
D904
He3
RVD1SS133
SWITCHING
1238,
C102,105,202,
RCB:
C913
RCBS1H471KB
PAS: INPUT (8)
© osc: cLock osc
Hall
3
D905
Fet
RVD1SS133
SWITCHING
R121,124,129,
205,311,902
mit
ae
Gs
oe
ae
Toisas
SWiTcHING
133,136,144,221,
C103,203
RCBS1H821KB
IC
dieses
Sa
EvBIsaice
SWITCHING
224,229,233,236,
C104,117,204,
PA1: INPUT (16)
(7) PE1: MOTOR OUT
{lpsos
ess
AVDiEs (a3
SWITCHING
244,304,308,309,
217
ECKD1H102MD
PAO: INPUT (5)
(8) PE2: FF/REW PLUNGER OUT
2
D909
Fe2
RVD1SS133
SWITCHING
328,334,338,341,
C106,121,206,
VDD: POWER SOURCE (72)
PES: PLAY PLUNGER OUT
Vop
D910
Fe2
RVD1SS133
SWITCHING
359,369,402,502,
221,340
ECFT1E333KD
RST: RESET (3)
(0) TEST
0911
G3
RVD1SS133
SWITCHING
634,635,638,679,
C107,207,325
ECEAQJU330
Vss: GND
680,904,905,906,
C108,208
ECEA1HUR47
INT: REEL ROTATION (12)
Qt) Vss
907,908,909,913 ERDS2TJ472
C109,209,337
ECEA1CU220
DETECTOR
R132,232
ERDS2TJ681
111,211
ECFT1E332KD
R135,235,326,
C112,118,129,
332
ERDS2TJ151
212,218,229,319,
R300
ERDS2TJ1RO0
321,323,328,334,
403,503
ECEA1CU100
R305,684
ERDS2TJ2R2
113,213
ECEA1HKOR1
R306
ERDS2TJ155
114,134,214,
R314
ERD25TJ106
234
RCBS1H101KB
R317,360,373
ERDS2TJ820
115,120,128,
R325
ERDS2TJ184
215,220,228
ECEA1HUR33
94 =
vV
—22—
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