Xerox DocuColor 12/DCCS50 Service Manual page 1462

Table 3 Memory System PWBA LEDs
LED Color Signal
CR4 Yellow CMMPSR/CMM-
PS(R)
CR5 Yellow IIT-PS/IITPSI
CR6 Yellow nMEMRDYd/
nMEMRDY
CR7 Yellow DRRE
Table 4 Post-IPS PWBA LEDs
LED Color Signal
CR1 Yellow /IPSRST
CR2 Yellow /LIPS-STAT
CR3 Yellow /IPS-CON
CR4 Yellow /LIOTEPS1
CR5 Yellow /LIOT\PS0
CR6 Yellow LSFMSP0
CR7 Yellow LED0, TIOCA3
CR8 Yellow LED1, TIOCB3
CR9 Yellow LED2, TIOCC3
CR10 Yellow LED3, TIOCD3,
CR11 Yellow LED4, TIOCA4
CR12 Yellow LED5, TIOCB4
CR13 Yellow LED6, TIOCA5
CR14 Yellow LED7, TIOCB5
Table 5 IDFE Motherboard LEDs
LED Color Signal
<To Be Green Power
Supplied>
<To Be Green Link
Supplied>
Yellow Activity
Red Failure
Yellow Heartbeat
Principles of Operation
PWBA LEDs
Comment
Output Page Sync signal from CMM3 (red),
Lit when signal is active
Page Sync signal from Pre-IPS to memory.
Lit when signal is active.
Lit indicates that memory can be written to.
Lit indicates that memory can be red from
Comment
IPS Reset from IOT CPU PWBA
From Post-IPS PWBA CPU; Status output to
IOT CPU PWBA
Control input from IOT CPU PWBA; after
buffer
Page Sync from IOT CPU PWB to Post-IPS
PWBA. Lit when signal is active.
Page Sync from Post-IPS PWBA to IOT CPU
PWBA
Output Page Sync signal from SFM1 ASIC.
Lit when signal is active.
From Post-IPS PWBA CPU
From Post-IPS PWBA CPU
From Post-IPS PWBA CPU
From Post-IPS PWBA CPU
From Post-IPS PWBA CPU
From Post-IPS PWBA CPU
From Post-IPS PWBA CPU
From Post-IPS PWBA CPU
Comment
Indicates DC power available to Mother-
board
Indicates integrity of Ethernet connection
Indicates activity on the Ethernet connection
Software controlled with various patterns;
indicates fault detection Drente software
boot-up sequence test
Software controlled with stable pattern; indi-
cates proper operation of software
Table 6 IDFE Print Server LEDs
LED Color Signal
Link
Activity
Table 7 IDFE BNC Transceiver LEDs
LED Color Signal
Link
Activity
LED Color Signal
CR1 Yellow +3.3 VDC
CR2 Yellow +5 VDC
CR3 Yellow CPE_PS
CR4 Yellow PS0
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Comment
Indicates integrity of Ethernet connection
Indicates activity on the Ethernet connection
Comment
Indicates integrity of Ethernet connection
Indicates activity on the Ethernet connection
Table 8 Edit PWBA LEDs
Comment
Indicates presence of +3.3 VDC to PWBA
Indicates presence of +5 VDC to PWBA
Page Sync signal from Post-IPS PWBA to
Edit PWBA
Page Sync signal from Edit PWBA to Post-
IPS PWBA
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