Sony DNW-A100 Maintenance Manual page 81

SS-63 board
LED No. Name Color
D108 SV Amber
D112 TRVR Amber
D301 DRUM Amber
D1102 SY1 STS1 Green
D1103 SY1 STS2 Green
D1104 MAINTE Green
D1105 SY1 ERR Red
D1902 SY2 STS1 Green
D1903 SY2 STS2 Green
D1904 SY2 STS3 Green
D1905 SY2 ERR Red
Blinking pattern of D108 on SS-63 board
Normal state
Lighting
off
30 ms
ROM checksum error
Lighting
off
Scores of milliseconds
RAM error
Lighting
off
Scores of milliseconds
System control dual port RAM error
Lighting
off
Scores of milliseconds
DNW-A100/A50/A45
DNW-A100P/A50P/A45P
Description
Represents the result of communication check to ROM and RAM
after power on by blinking state.
Lights when the tracking VR is enable.
Blinks during the drum microcomputer (on SS-63 board) under
normal operation. Usually lights for 30 ms at intervals of 1.1 to 1.5 s.
The blinking interval is inverted when the drum is locked.
Blinks when SYS1 CPU operates normally.
Lights when between SYS1 and KEY PANEL( KY-364) communicate normally.
Lightness when between SYS1 and KEY PANEL (KY-364) communicate
abnormally.
Lights during maintenance mode is performed.
Lights SYS1 CPU does not operate normally.
Blinks when between SYS1 CPU and other CPU (SYS2 KY) commmunicate
abnormally.
Blinks when SYS2 CPU operates normally.
Lights when between SYS2 and SV CPU communicate normally.
Lightness when between SYS2 and SV CPU communicate abnormally.
Lights when between SYS2 and SY1 CPU communicate normally.
Lightness when between SYS2 and SY1 CPU communicate abnormally.
Lights when SYS2 CPU does not operate normally.
Blinks when between SYS2 CPU and other CPU (SYS1, SV) communicate
abnormally.
0.1 s
0.1 s
0.5 s
0.1 s
0.5 s 0.5 s
1.1 to 1.5 s
0.5 s
0.5 s
2-11. Information of LEDs on Circuit Boards
Normal state
Blinks
Lightless
Blinks
Blinks
Lights
Lightness
Lightness
Blinks
Lights
Lights
Lightness
Repeat
Repeat
2-19