2.3. SYSTEM FEATURES
2.3.1. Power Saver Modes *
The machine has three levels of power saver mode as shown below.
Normal
Level 0
Level 1
Level 2
Main CPU
ON
ON
ON
OFF
Power Saver CPU
OFF
OFF
OFF
ON
Power Saver LED
OFF
ON
ON
ON
LCD/LED
ON
OFF
OFF
OFF
+5V Power Supply
ON
ON
ON
OFF
+24VM Power Supply
ON
ON
ON
OFF
Fusing Lamp
ON
Standby temp.
or OFF
Standby
temp.
or OFF
OFF
+24VM Power Supply
ON
ON
ON
OFF
In power saver mode levels 0 and 1, the main CPU monitors and controls the
system. The fusing lamp is either turned off or kept at the standby tempera-
ture, depending on the setting of User Parameter Switch 05, bits 6.
FDU
FCE
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FCIP
Main
CPU
PSU
Interlock Switch
+24VD
+24VM
Q6 and Q13
DC/DC
Converter
(+24/+5V)
Q2, Q3 and Q14
+5V
+5VE
+5VV
5
+24VMON
5
5
5
24
RESET
COMMAND
STATUS
NCU
Ring
Detection
Circuit
Current
Sensor
(Europe/
Asia)
EXRING
+5VEE
HOOK0/HOOK1
+5VE
+5V
+24VM
+5VE
Contact
Image
Sensor
Motors
and
Clutches
Operation Panel
LED ON/OFF
Doc. Sensor
Power Saver Sw.
Power Saver
Key
Power Saver
LED
Document
Sensor
WAKEUP
Power Saver
CPU
IC5
+5VV
+24VM
H516D525.wmf
DETAILED SECTION DESCRIPTIONS
August 2nd, 1995
SYSTEM FEATURES
2-46