Date: Jul. 7, 1994
COPIER : SF-2022
1. STRENGTHENING OF THE DRUM SEPARATOR PAWL (TROUBLE
SHOOTING PAWL DAMAGE ).
2. CHANGE IN MAIN PWB PARTS (TROUBLE SHOOT I NG AND/ OR
IMPROVEMENT OF STATIC ELECTRICITY AND NOISE PROBLEMS).
3. CORRECTION OF TECHNICAL REPORT SP-1668.
No. : SP-1712
1. Strengthening of the drum separator pawl (trouble shooting pawl damage).
1.Model name: SF-2022, 2027, 2035, 2018, 2022N, 2027N, 7800, 7850, 7870
2.General: When a jam occurs in the processing unit the user will remove the jammed copy papers
to remedy the problem. If the jammed copy papers are removed roughly, damage
sometimes occurs to the separator pawl. To prevent this damage from occurring, the
thickness of the pawl has been increased.
3.Description: The thickness of the drum separator pawl has been increased as shown in the figures
below.
Increased thickness.
(The parts code has not been changed.)
4.Action: (Factory action)
From 1993 October production (Option and service and maintenance kits included).
SHARP CORPORATION Reprography Division
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Green
C
2. Change in main PWB parts (trouble shooting and/or improvement of static
electricity and noise problems).
1.Model name: SF-2022 / 2027
2.General: Parts in the main PWB have been changed to improve the problems of static electricity
and noise.
(Flickering of the LED on the operation panel sometimes occurs due to the problems of
static electricity or noise.)
3.Description: Changes and addition of resistors in the main PWB and changes in the diode array and
digital transistor have been carried out.
Changed resistor (R306) VRS-TS2AD122J → VRS-TX2HD122J
Changed resistor (R308) VRS-TS2AD242J → VRS-TX2HD242J
Added resistor (R319) VRS-TS2AD222J
Added diode array (D308, D31 1) VHDDAN202K/-1
Added diode array (D309, D310) VHDDAP202K/-1
Changed digital transistor(Q301) VSDTA123YK/-1 → VSDTA114YK/-1
The silk of the main PWB has been changed from [N0928FC-2] to [N0928FC-3] in
accordance with the changes described above.
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Description
➀ VRS-TS2AD122J- ⇒ VRS-TX2HD122J- (Changed)
➁ ⇒ VHDDAP202K/-1- (Added)
➂ ⇒ VHDDAN202K/-1- (Added)
➃ ⇒ VHDDAP202K/-1- (Added)
➄ ⇒ VHDDAN202K/-1- (Added)
➅ ⇒ VRS-TS2AD222J- (Added)
➆ VRS-TS2AD242J- ⇒ VRS-TX2HD242J- (Changed)
➇ VSDTA123YK/-1- ⇒ VSDTA114YK/-1- (Changed)
4.Action: (Factory action)
From 1994 March production.
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3. Correction of technical report SP-1668.
1.General: Two items listed in technical report SP-1668 were mistaken and are hereby reported
and corrected. The parts codes given for the operation manual for models SF-2022 /
2027 were mistaken as described below.
2.Description:
Mistaken SF-2022 / 2027
36 -30
TINSJ0998FCZ1 TINSJ0998FCZZ
Correct SF-2022 / 2027
Ref.
No.
2
Model
SF-2022
name
2027
Version P/G No.
32 -78 VRS-TS2AD122J VRS-TX2HD122J DD Resistor
32 -89 VRS-TS2AD242J VRS-TX2HD242J DD Resistor 5 R308
32 -86 VRS-TS2AD222J Q’ty change — Resistor —
All
32 -43 VHDDAN202K/-1 Q’ty change — Diode —
32 -44 VHDDAP202K/-1 Q’ty change — Diode —
36 -30
Current parts New parts
Parts code Parts code
TINSJ0998FCZ1 TINSJ0998FCZ2
Price
rank
Parts name
Effec-
tive
time
’94/3
Inter-
change-
ability
5 R306
Note
Q’ty:
13 to 14
(R319
added)
Q’ty:
14 to 16
(D308,
D311
added)
Q’ty:
4 to 6
(D309,
D310
added)
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32
<Interchange>
1. Interc ha ng ea bl e. 4. N ot i nt er ch an ge ab l e.
2. Current type can be used in place of new type.
New type cannot be used in place of current type.
3. Current type cannot be used in place of new type.
New type can be used in place of current type.
Parts marked with “ ” is important for maintaining the safety of the set. Be sure to replace these parts with
specif ie d ones fo r m ai n ta in i ng t he s a fe ty an d pe rformance of the s et .
!
VSDTA123YK/-1 VSDTA114YK/-1 AC Digital transistor 5 Q301
5. Interchangeable if replaced with same types of
relate d parts in use .
6. Others.
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