Led Indicator Infomation On Boards - Sony DVW-522 Maintenance Manual

2-5. LED Indicator Infomation on Boards

2-5. LED Indicator Infomation on Boards
SS-52 Board
LED No. Name Color
D300 ––––– –––––
D301 SYS 1 Amber
D601 SYS 2 Amber
D711 SV Amber
D800 DRUM Amber
D2109 DT Amber
APR-1 Board
LED No. Name Color
D51 APR 1 Amber
2-14
<Top view>
Description
Unused
Blinks during SYS 1 V25 CPU normal operation.
Blinks during SYS 2 Z80 CPU normal operation.
Checks the ROM and RAM for communication when the power
switch is set to ON.
Lights for scores ms at intervals 1 to 2 seconds. (For the blinking
pattern when abnormality occurred, refer to the figure shown next page.)
Blinks during drum microcomputer normal operation. Usually lights
for 30 msecond at intervals of about one second.
The blinking interval is inverted when the drum is locked.
Blinks during DT microcomputer FMC-16 CPU normal operation.
Description
Blinks during APR 1 microcomputer normal operation (when a 1/2VD
signal is received from the SS-52 board).
SS-52 Board
D301
D300
D601
D800
D2109
D711
D51
APR-1 Board
Normal State
–––––
Blinks
Blinks
Blinks
Blinks
Blinks
Normal State
Blinks