JVC KD-R491 Schematic Diagrams page 11

MAIN PWB ASSY XJ1-217x-0x (J7K-0335-00)
(Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade))
(Lead free solder used in the board (material : Sn-Cu, melting point : 230 Centigrade))
How to repair a fuse pattern.
Refer to "2.1 How to repair a fuse pattern".
J321
SWR FR
RR
RL
J600
DIST
SIG
No.MA665
J470
SWL
FL
SR SG SL
T3V3
(No.MA665<Rev.001>)11/19
1 1
C990
IC301
AC
TUL
TUR
IOP+
IOP-
ARF
RF
PC
SDA
LDI
SCL
HOLD
CS DO
CLK DI
VDD
ERR1 TEL
DB2A
RST
MEM
OE
GND
BUP
V6
VCC1
VCC2
ILM
AUD
MONO
TE FE
CNT
TM
FBF1
1V2
RXM
DB1A
FBF
DB1B
DB1C
CN701
VOL1 REM2
created date:2017-09-25
CN990
FLG
EXT
ANT
DCF