1-37
DNW-A220
DNW-A220P
Lit
Unlit
Normal state
0.03 s
1.1 to 1.5 s
1.1 to 1.5 s
Lit
Unlit
RAM error
Lit
Unlit
System control dual port RAM error
some 10
milliseconds
some 10
milliseconds
0.1 s
0.5 s
0.5 s
Repeated
Repeated
0.1 s
0.5 s
0.5 s
0.5 s
1-10. Description on Internal Indicators
SV-194 Board
Ref.No. Indicator name
Color
Description
Normal state
D107
SV
Green
Indicates by changing blinking intervals the result of
Blinking
communication check to ROM and RAM at power on
(See illustration below)
D108
Not used
–––
D109
TRVR
Yellow
Lit when tracking VR operation is active (with S100-4 turned on) Dark
D201
DRUM
Green
Blinks during drum microcomputer (IC212) operation
Blinking
Normally blinks for 30 milliseconds at intervals of about 1 sec.
When the drum is locked, the blink is inverted
Blinking pattern of D107
SV-194 board
D201
D109
D108
D107
