2
A
B
C
D
E
F
G
H
I
J
1
3
4
5
7
RX-V557/HTR-5850/DSP-AX557
RX-V457/HTR-5840/DSP-AX457
6
60
OPERATION (1) P.C.B. (Side B)
Lead Free Solder Used
1
17
16
48
49
64
32
33
■
PRINTED CIRCUIT BOARD (Foil side)
RX-V557/DSP-AX557
OPERATION (1) P.C.B.
(Side A)
Ref. No.
Location
D802
I2
D803
H5
D804
H5
D805
D5
D806
E5
D807
E5
D808
D5
IC801
G5
Q801
F5
Q802
F5
Q803
G5
Q804
G5
Q805
H5
Q806
G5
Q808
F5
• Semiconductor Location
PRESET/TUNING
FM/AM
TONE CONTROL
STRAIGHT
EFFECT
SPEAKERS
A
B
HPL
HPE
HPR
MG
/HP
SUBTRANS (2)
(CB456)
OPERATION (3)
(CB871)
HPR
HPE
HPL
MG
/HP
FUNCTION
(CB309)
ZONE2
MAIN
POWER
TUNING MODE
MEMORY
CKFD
CEFD
ADKEY0
VRA
TONEA
ISA
/PURD
/PSW
RM+
+5S
VP
DTFD
ADKEY1
VRB
TONEB
ISB
/BLK
REM
RM-
+5M
MG
OPERATION (2)
(CB861)
+5M
PSW
F2
F1
EDIT
SEARCH MODE
XM
NEXT
CATEGORY
DISPLAY
A/B/C/D/E
PROGRAM
- LEVEL +
PRESET/TUNING/CH
VOLUME
MAN’L/AUTO FM
AUTO/MAN’L MONO
FL DISPLAY
INPUT MODE
INPUT
MULTI CH
INPUT