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4614 Impact Printer
Maintenance Manual
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4-3
1 Maintenance
Carry out the maintenance control items listed below to maintain the original performance of this printer and
prevent trouble from occurring.
1-1 Cleaning
1. Removal of dirt.
Clean the dirt with tissure or soft cloth.
Note:Do not use thinners or trichlene/ketone base solvents for cleaning as they can damage plastic parts.
Be careful not to damage electrical parts, wired areas or mechanisms and avoid getting them wet.
2. Removal of dust, pile, etc.
Clean with a vacuum cleaner.
Note:Check the amount of oil after cleaning and lubricate if necessary.
1-2 Checks
Maintenance checks for this printer is divided into the two areas of "daily check" that the person using the
printer carries out during normal use and "regular check" that can be done only by an experienced person with
a knowledge of the equipment.
1.Daily check:
Check that the printer is being properly used.
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Is the ribbon cassette set in the correct position?
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Is there any dirt or foreign object in the printer?
2. Regular check:
Carry out regular check and lubrication after six months use or after printing 1 million lines.
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Check for bending of springs.
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Remove any dirt or dust in the area of the detectors.
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Remove dirt around the drive shaft and lubricate.
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Check the gap between the platen and the print head.
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Lubrication locations Type of oil
1 Contact surfaces between casette ratchet and gear angle Molykote EM-50L
2 Contact surfaces between gear 12×49×0.5 and gear shaft (A) Molykote EM-50L
3 Contact surfaces between gear 40×0.5 and gear shaft (B) Molykote EM-50L
4 Contact surfaces between gear 18×72×0.5 and gear shaft (C) Molykote EM-50L
5 Contact surfaces between gear 16×48×0.5 and gear shaft (D) Molykote EM-50L
6 Contact surfaces between carriage stay (2) and carriage Molykote EM-50L
7 Contact surfaces between PF roller and PF roller bearing Molykote EM-50L
8 Contact surfaces between holder roller and holder roller bearing Molykote EM-50L
9 Contact points between gear 40×0.5 and gear 18×17×0.5 Molykote EM-50L
0 Contact points between gear 28×0.5 and gear 12×49×0.5 Molykote EM-50L
A Contact points between gear 12×49×0.5 and gear 16×48×0.5 Molykote EM-50L
B Cog surfaces of gear 16×48×0.5 Molykote EM-50L
C Cross section of drive shaft grooves FLOIL GB-100
D Contact points of holder roller and holder roller spring FLOIL GB-100
E Contact surfaces between drive shaft and drive shaft bearing Mobil 1
F Contact surfaces between carriage stay (1) and CR bearing Mobil 1
G Contact surfaces between half nut and CR bearing Mobil 1
H Contact surfaces between bavel gear 12×0.5 and fram R Molykote EM-50L
2 Lubrication
Lubrication is extremely important for preserving the original performance of the printer over a long period
of time.
2-1 Type of oil
The type of oil used has a major influence on the performance and durability of the printer. You should pay
particular attention to the cold temperature properties of the oil. We recommend use of the grease and lubrication oils listed below for this printer.
2-2 Lubrication method
When lubricating during disassembly or assembly operations, be sure to wash and clean the equipment well
prior to lubrication to remove dirt and dust.
Lubricate the equipment at regular intervals of six months or after every 1 million lines. Be sure to lubricate
equipment after disassembling or replacing parts when oil has been removed by cleaning.
2-3 Lubrication locations
Refer to figure 4-1 and 4-2.
Note:When lubricating in item 14 (contact points of holder roller and holder roller spring), be careful not to get
grease on rubber parts.
Type of oil Product name Manufacturer
Grease
Molykote EM-50L Dow Corning Corp.
FLOIL GB-100 Kanto Chemicals Co., Ltd.
Lubricant Mobil 1 Mobil Oil Co., Ltd
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3 Screw Sealing
Screw sealant is applied to parts so that the screws in the printer will not come loose from vibration during
shipment.
When carrying out replacement of parts, apply sealant to the following screws, in accordance with Figure 41 to 4-6.
Note: n and f are for SP317 only
t is for SP347 only
a Adjustment spring retention screw k Sensor PCB HP retention screw
b Adjustment bush retention screw l Terminal PCB retention screws(2)
c Platen retention screws (left, right) m Print head retention screws(2)
d Paper guide shaft(1) retention screws(left, right) n Sensor angle retention screw
e Gear angle retention screw o Terminal PCB square hole
f Sensor PCB VALID retention screw p Main logic board retention screws(4)
g Adjustment bar retention nut q Power supply unit retention screws(4)
h PF motor retention screws (2) r Power Chassis retention screws(3)
i PF motor plate retention screws(2) s Base plate retention screws(4)
j Carriage motor retention screws(2) t Cutter holder plate(2)
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