Slide 67
#4 Not Often#3 Occasionally#2#1 Suspect
ASC
An increase or reduction of the Energy Recovery
Circuit output (MID)
Shorted SUB5V
SC Energy Recovery
Circuit
6 BLINKS
A
Failure of IC9300Discharge Control Circuit
DDC (IC9300)
9 BLINKS
ASS
Abnormality of the sustain drive circuit
Open or loose connection between the SS/SS2 Boards
and FPCs from the panel (SS52 – SS54 – SS55 – SS57)
Open or loose connection between connectors of A and C
boards
Open or loose connection between SC and A boards
(SC20(SN20)/A20)
Sustain Drive Circuit and
Connection between the
SS board and the Panel
8 BLINKS
A/PanelSSSCSU/SD
Missing or shorted Vsus
Abnormality of the scan circuit output, the 15V_F
the scn_pro, and Vscn circuit
Loose or open Connection between the SC board and
the SU/SD board (SC41, SC42, SC46)
Open or loose connection between connectors SC2/P2
Defective panel
Scan Drive Circuit and
Connection between the
SC board and the SU/SD
board.
7 BLINKS
A
Defective A boardIC8000 Internal
Communication
13 BLINKS
Speakers/
Subwoofer
A
Defective Speaker/Subwoofer
Pinched Speaker Wire
Audio Amp. Circuit
12 BLINKS
APSSSC
Over Voltage Condition of SUB5V or SUB3.3V
Low voltage of SUB3.3V (Result of P15V shorted)
SUB3.3V_Sense (OVP)
10 BLINKS
AP
Missing P15VP15V from the P board
2 BLINKS
A
Read error
Wake up error of IC9300
Panel Information SOS
Communication problem
1 BLINK
LIST OF BOARDS POSSIBLY CASUSING THE FAILURECONDITIONS TRIGGERING
THE SHUTDOWN
CIRCUIT
MONITORED
POWER LED
ERROR CODE
Power LED Error Code Definition (TC-P**ST60)
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