Slide 77
POWER LED
ERROR CODE
CIRCUIT
MONITORED
CONDITIONS TRIGGERING
THE SHUTDOWN
LIST OF BOARDS POSSIBLY CASUSING THE FAILURE
#1 Suspect #2 #3 Occasionally #4 Not Often
1 BLINK
Panel Information SOS
Communication problem
Read error
Wake up error of IC9300
A
2 BLINKS
P15V from the P board Missing P15V
P A
6 BLINKS
SC Energy Recovery
Circuit
An increase or reduction of the Energy Recovery
Circuit output (MID)
Shorted SUB5V
SC A
7 BLINKS
Scan Drive Circuit and
Connection between the
SC board and the SU/SD
board.
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
SU/SD SC SS A/Panel
8 BLINKS
Sustain Drive Circuit and
Connection between the
SS board and the Panel
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)
SS A
9 BLINKS
Discharge Control Circuit
DDC (IC9300)
Failure of IC9300
A
10 BLINKS
SUB3.3V_Sense (OVP) Over Voltage Condition of SUB5V or SUB3.3V
Low voltage of SUB3.3V (Result of P15V shorted)
SC SS P A
12 BLINKS
Audio Amp. Circuit Defective Speaker/Subwoofer
Pinched Speaker Wire
A Speakers/
Subwoofer
13 BLINKS
IC8000 Internal
Communication
Defective A board
A
Slide 77
Power LED Error Code Definition (TC-P**ST60)