Sharp AR-C150 Service Manual page 22

AR-C150
[How to read the pattern]
When deflection is made to the positive (+) side in the rough adjust-
ment, increase the value on the positive (+) side.
When the deflection is made to the negative (–) side in the rough ad-
justment, increase the value on the negative (–) side.
20
When the read value is 27
(= 20 +7 ):
∗
C
∗
A
∗
B
(Example)
When the simulation is set to 105,
newly set to 132 (= 105 + 27).
∗
A: Rough adjustment pattern
∗
B: Fine adjustment pattern
∗
C: Adjustment range
[Main scan registration adjustment pattern]
(Example) Set the simulation values as shown below.
A: 100 A: 93 (=100 –7)
B: 112 B: 100 (=112 –12)
→
C: 95 C: 96 (=95+1)
Reset value
D: 98 D: 109 (=98+11)
E: 102 E: 109 (=102+7)
F: 96 F: 118 (=96+22)
20
When the read value is –27
(= –20 – 7):
∗
C
∗
A
∗
B
(Example)
When the simulation is set to 105,
newly set to 78 (= 105 – 27).
If the rough adjustment pattern or the fine adjustment pattern is not in
the above range, perform the following procedures.
5) Calculate the shift from the adjustment reference position for each
adjustment mode.
The sum of the shift of rough adjustment reference and the shift of
fine adjustment is the actual shift.
Shift (Correction value) = Rough adjustment shift + Fine adjust-
ment shift
The interval between scales of the rough adjustment reference
corresponds to 20. Be careful of polarities of the shift (positive or
negative) when calculating.
6) Select the mode to be adjusted with the scroll key.
7) Add or reduce to or from the current adjustment value, enter the
obtained value, and press the [OK] key.
•
When the shift (correction value) is positive:
Adjustment value = Current adjustment value + Shift (Correc-
tion value)
•
When the shift (correction value is negative:
Adjustment value = Current adjustment value – Shift (Correc-
tion value)
8) Press the [EXECUTE] key.
The adjustment pattern is printed.
Check that the conditions of procedure 4) are satisfied.
Repeat procedures 4) – 8) until the conditions of procedure 4) are
satisfied.
(Note) When either of the adjustment values of the front and the
rear adjustment mode is changed, the other adjustment
print pattern may be varied. Be careful of that.
When the adjustment can be completed with a fine adjust-
ment, perform the front adjustment mode first, and then
perform the rear adjustment mode after completion of the
front adjustment.
NOTE: Before performing this adjustment, be sure to adjust the K
magnification ratio (SIM 50-10, H) properly.
ADJ M10
Sub scanning direction color image
resist adjustment (Scanner (Writing)
unit) (Color)
This adjustment must be performed in the following cases:
•
When the scanner (writing) unit is replaced.
•
When the scanner (writing) unit is removed from the machine.
•
When a color image mis-resist occurs in the sub scanning direc-
tion.
•
When the installing position is changed.
•
When a U2 trouble occurs.
•
When the ICU main PWB is replaced.
•
When the EEPROM of the ICU main PWB is replaced.
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