Sony DNW-A220 Maintenance Manual page 44

1-10. Description on Internal Indicators
EQ-72 Board
A B
1
2
3
4
5
Ref.No. Color Description
D702 Green Lit only in the analog playback mode
D703 Red Lit only in the REC mode
D704 Red Blinks when EQ microcomputer normally operates
Lit when any of the following errors occurs
1-36
C D
1. NV-RAM check sum error
2. NV-RAM verifying error
3. INNER ECC status error
4. REC data parity error
5. When conditions necessary for automatic adjustment are not ready
6. When communication with system control is not started
E F G
EQ-72 Board (A Side)
H
Normal state
–––
–––
Blinking
DNW-A220
DNW-A220P