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A B C D E

KAC-PS521/X521
1 PC BOARD (COMPONENT SIDE VIEW)
PREAMPLIFIER UNIT X08-4150-10 (J76-0010-12)



CN1




22 1




C68
2 C64
R6




C107
S7




R66
C66
8 7 C6 C4




R8
R4 R2
R64




C11




R117
S8 C12 IC1
R3 R1
R63




R7
C5 C3




R65
14 1
S9 R5




C65
C67
C63

R33
MONO ST




200mV
INPUT SENS
1




1




VR2
103A S1
3 R39

5V
R40
ON OFF
C31




C32

R101 S2




I.S.F
R102
R103 1
R104 R106
HI PASS




VR1
R105 R11
200Hz




16 1 C101 ON OFF
R12
ED1




17 64 R115 C102




ANP CONT
R114 C103 1
503C




S3
50Hz
C104




C105




IC7

HPF OFF LPF
200Hz




R107
4 32 49
LOW PASS




R108
S4
VR3
503C




33 48
R111 R112
50Hz




1
R109
R110
24




D2
R72
R42
R41




5
C73
R73
R77 R52
R44 R43



R76 R74
C33




R22 R21
C74




C39
R45
1 2

CN2




C15
C16




C9
C34




C35 C75
R46




C28
14 8
R116
R13



D1




C10
C13
C17




R31 R32
R10




IC5
R9




1 20
R14
C18
C26




1 7
C25




C27 C40
R15
R24 C22 C24
C21 C23
R25 R27




R30




C37
R26 R28
R29




1 C41 R16
C30
R20




C42 IC3
R19




8
C29




C43
IC4 C44
C19




C20




6 4 5 C45
WH2
R17
R55
R23




C38 10 11
R56
R18




1 3 X08-4150-10
C49
R70
R69




R38
R34




C61 Ref. No. Address
1 8
IC6 IC1 2D
4 5
IC3 6D
R79
R78




C48
IC4 6D
IC5 6C
IC6 6D
IC7 4B

7
Refer to the schematic diagram for the values of resistors and capacitors.

8
F G H I J

KAC-PS521/X521
PC BOARD (FOIL SIDE VIEW) 1



PEAMPLIFIER UNIT X08-4150-10 (J76-0010-12)




TP5




TP19
TP10


TP20
TP15




TP4
TP8
TP183




TP74
2
TP75

TP27
TP22




TP23 TP9




TP1

TP2
TP29




TP11
TP13
TP17
TP16
TP25 TP30 TP18

TP3




TP14
TP181
TP180



TP76




TP12
TP7




TP21
TP6




TP123
TP125
TP124 3
TP121
TP31 TP118
TP106 TP119
TP28 TP117
TP105
TP120
TP72 TP104
TP116
TP64 TP103 TP122
TP60
TP102 TP126
TP59 TP101 TP127
TP115
TP100
TP114
TP113
TP112
TP189 TP94 TP99 TP111
TP98 TP110
TP186 TP93 4
TP109
TP185 TP130
TP108
TP132
TP184 TP107
TP128 TP129
TP90
TP89
TP92 TP91 TP88




TP37 TP32
TP182
5
TP78
TP188
TP36 TP61


TP45 TP187
TP39




TP69




TP68
TP67
TP70




TP73
TP71
TP40



TP38




TP35
TP56
TP46
TP47 TP53
TP41 TP48 TP66 TP63
TP49 TP55
TP42 TP50 TP54
TP52 TP65 TP62 6
TP51 TP44 TP43


TP193
TP192




7
Refer to the schematic diagram for the values of resistors and capacitors.

9
K L M N O

KAC-PS521/X521
1 PC BOARD (FOIL SIDE VIEW)
2.5mV


AUDIO UNIT X09-5760-10 A/2 (J76-0013-11) DC voltmeter




W550




Q144
Q145
Q123




D132
Q146
Q121




R185
R181
R179


R186
Q147




R188
R187
C141




C140


Q149
D113
D115




D129




R196
R191
EB




E


E
W52




E
B



C142
BE




R192
EB




R178 Q142