Sharp AR-BC320, Service Manual, Page: 99 / 344

AR-BC320 DESCRIPTIONS OF EACH SECTION 7 - 58
NOTES:
*A: This operation is performed when there is an original already on the original platform in advance. If there is no original on the original
platform, this operation is not performed.
*B: When there is an original in the original tray, the original set sensor (EMPS) output becomes LOW.
*C: Performance of this operation depends on whether there was any preliminary feed in steps 22 to 28.
B. Disassembly/assembly/maintenance
(1) Maintenance target parts in the RADF section
✕
: Check (Clean, replace, or adjust as necessary.)
❍
: Clean
▲
: Replace
∆
: Adjust
✩
: Lubricate
❏
: Shift position
*1: When to replace: Check the counter value on the respective feed entrances.
Roller/pad parts: 100K or 2 years.
(2) Replacement procedures of maintenance parts and major parts
[Separation section]
a. Pickup roller and document feed roller
1) Open the document feed cover.
a-1. Pickup roller and document feed roller disassembly
1) Open (A) the document feed cover.
2) Press the tab, and remove (B).
Step 87: Delivery motor (DEM) rpm decrease.
Step 88: Transport motor (DTM) OFF.
(Transport belt stops.)
Step 89: Document exit sensor (DES) detects trailing
edge of discharged original.
(DES output LOW)
Step 90: Original is discharged.
Step 91: Delivery motor (DEM) OFF.
(Reverse roller stops.)
END
Step 87
Step 88
Step 89
Step 90
Step 91
Part name
When
calling
50K 100K 150K 200K 250K 300K 350K 400K Remarks
Separation
section 1 Pickup roller (
❍
)
✕ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍
*1
2 Document feed roller (
❍
)
✕ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍
*1
3 Separation pad (
❍
)
✕ ❍ ❍ ❍ ❍ ❍ ❍ ❍ ❍
*1
A
B