Functions Of Switches And Other Parts On Pwbs; Master Board Pwb-A - Minolta EP1080 Service Manual

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FUNCTIONS OF SWITCHES AND OTHER PARTS ON PWBs

Master Board PWB-A

No. Symbol Name
Trouble
1
S1 Reset
Switch
Initialize
2
PJ22
Points
Memory
3 MEMORY Clear Test
Point
Total Clear
4
TOTAL
Test Point
GND Test
5
GND
Point
5
GND
Resetting Function
After correcting the Resets a malfunction
malfunction, press the including fusing
Trouble Reset Switch. malfunctions.
While creating a closed Clears the data other
circuit across two than the program
terminals of PJ22, turn memory, Counter
ON the Power Switch. counts, User's Choice,
Adjust, and zoom ratios.
•
While creating a closed Clears all data other
circuit across the than the counter
Memory Clear pin and counts, resetting it to
GND pin, turn ON the the initial data.
Power Switch.
•
Initializes the data
settings made in the
field as well as the
factory-set
adjustment data.
With the Power Switch Clears the counts of
in the ON position, the Electronic Counters
close the circuit across (including the Service
the Total Clear Point Counter).
and GND pin and keep
it closed for 1 sec.
Ground used for total
clear and memory clear.
S-2
4 3 2
1
PJ22 S1
MEMORY
TOTAL
1139D065AA
Remark
A malfunction condition
of, or misfeed in, the
areas other than the
Fusing Section can be
reset by opening and
closing the Front Door
after the condition has
been cleared.
Use these points only if a
malfunction is not reset
by turning OFF and ON
the Power Switch. When
these points are used, it
does not change the data
settings made in the field
as well as the factory-set
adjustment data.
•
Use this point if a
malfunction condition is
not reset by using the
Initialize Points.
•
After memory clear,
make the User's Choice
settings and adjustment
data settings again.
Excludes the IU Counter.