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KRC-754 D/L
CIRCUIT DESCRIPTION
(X14-3662-XX)
Component
Purpose, Function
Pack in Mute SW
Tape Mute INH
Power SW DET
Mecha Mute SW
SD INV
AM SD SW
FM Lo/DX SW
Device Name
Operation, Condition, Compatibility
DTC144EK
DTC144EK
28C2412K
28C2412K
DTC144EK
28C2412K
Q39
DTC144EK
Q40
DTA144EK
Q32
SW for muting during FF, REW and PROG.
AM
Band SW
MW/LW
switching.
(KRC-754L
only)
Q41
DTC144EK
Q42
DTA144EK
AM AGC CUT SW
043
DTC144EK
044
DTA124EK
P-cont OUT driver
DTC144EK
P-cont driver SW
Q46
2SA1037K
;
P-cont OUT driver
Q47
2SB1277
Q48
DTC144EK
ILL DIMMER SW
laag «| 2SK669
PLL LPF
7
PWR Amp Mute SW
lass | DTC 144EK
Q56, 57
DTC144EK
ACC.
B.U DET
Detects ACC and BU voltages and controls the
los8
28C2412K
aa
power amp ST-BY and »-COM CE.
DTC144EK
-
lasg_s(pTCi44eK
AVR STBY cont
Controls ST-BY of the system AVR (IC25) and
Q60
DTA144EK
switches P-on 5 V.
Q61
DTA144EK
P-on 5 V driver
Q62
DTA144EK
CE 5 V driver
Q63
DTC144EK
ACC, B.U DET Mute SW
(X86-1272-71)
Component
Device Name
Purpose, Function
Operation, Condition, Compatibility
IC1
BA3430F
Tape EQ Amp
LA1140
FM IF Amp
FM IF sig Amp
PST529E-MT
Reset IC
28C2413K
FM IF Amp
| DTC124EK
FM Mute cont
OFF during seek.
28C2412K
FM S-Meter Buff
DTC144EK
AFC SW
Switches the time constant of AFC terminal.
DTC114EK
T-ADV SW
28A1428
Planger driver ,
DTC144EK
2SA1428
u-COM RESET SW
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