Ricoh ps430 Service Manual
PAPER TRAY UNIT
(Machine Code: G520)
30 July 1999 SPECIFICATIONS
1. OVERALL MACHINE INFORMATION
1.1 SPECIFICATIONS
Paper Size
Paper Weight: 60 g/m2 ~ 105 g/m2, 16 lb. ~ 28 lb.
Tray Capacity: 500 sheets (80 g/m2, 20 lb.)
Paper Feed System: FRR
Paper Height Detection: 4 steps (100%, 70%, 30%, Near end)
Power Source: 24 Vdc, 5 Vdc (from the copier)
Power Consumption: 50 W
Weight: 25 kg
Size (W x D x H): 540 mm x 600 mm x 270 mm
:
A5 lengthwise to A3
HLT lengthwise to DLT
120 Vac: 115 V version (from the copier)
220 ~ 240 Vac: 224/240 V version (from the copier)
G520-1
Options
MECHANICAL COMPONENT LAYOUT 30 July 1999
1.2 MECHANICAL COMPONENT LAYOUT
21
10
3
4
9
1. Upper pick-up roller
2. Upper paper feed roller
3. Upper relay roller
4. Upper separation roller
5. Lower relay roller
8
G520V500.WMF
6. Lower paper feed roller
7. Lower separation roller
8. Lower pick-up roller
9. Lower tray
10. Upper tray
5
6
7
G520-2
30 July 1999 ELECTRICAL COMPONENT LAYOUT
1.3 ELECTRICAL COMPONENT LAYOUT
17
16
15
14
18
13
1
2
3
4
5
6
7
8
9
10
11
12
1. Main board
2. Tray motor
3. Upper paper lift sensor
4. Relay clutch
5. Upper paper feed clutch
6. Tray lift motor
7. Lower paper feed clutch
8. Vertical guide switch
9. Lower paper lift sensor
G520V501.WMF
10. Lower paper end sensor
11. Lower relay sensor
12. Upper relay sensor
13. Upper paper end sensor
14. Lower paper height 2 sensor
15. Lower paper height 1 sensor
16. Upper paper height 2 sensor
17. Upper paper height 1 sensor
18. Tray paper size switch
Options
G520-3
ELECTRICAL COMPONENT DESCRIPTION 30 July 1999
1.4 ELECTRICAL COMPONENT DESCRIPTION
Symbol Name Function Index No.
Motors
M1 Tray Drives all rollers . 2
Tray Lift
M2
Sensors
S1
S2
S3
S4
S5 Upper Relay Detects misfeeds. 12
S6 Lower Relay Detects misfeeds. 11
S7
S8
S9
S10
Upper Paper Lift Detects when the paper in the upper tray is
Lower Paper Lift Detects when the paper in the lower tray is
Upper Paper End Inf orms the copier when the upper tray runs
Lower Paper End
Upper Paper Height 1 Detects the amount of paper in the upper
Upper Paper Height 2
Lower Paper Height 1 Detect s the amount of paper in the lower
Lower Paper Height 2 Detect s the amount of paper in the lower
Lifts the upper and lower tray bottom plates
(there are two motors in this unit, one for
each tray.
at the correct feed height.
at the correct feed height.
out of paper.
Informs the copier when the upper tray runs
out of paper.
tray.
Detects the amount of paper in the upper
tray.
tray.
tray.
6
3
9
13
10
17
16
15
14
Switches
SW1 Vertical Guide Detects whether the vertical guide is open. 8
SW2
Magnetic Clutches
MC1 Upper Paper Feed Starts paper feed from the upper tray. 5
MC2 Lower Paper Feed Starts paper feed from the lower tray. 7
MC3 Relay Drives the transport rollers. 4
PCBs
PCB1
Tray Paper Size Detects the paper size in the paper tray
based on a dial setting.
Main Controls the paper tray unit and
communicates with the copier.
18
1
G520-4
30 July 1999 DRIVE LAYOUT
1.5 DRIVE LAYOUT
1
2
3
12
11
10
9
8
7
1. Tray motor
2. Relay clutch
3. Upper paper feed clutch
4. Lower paper feed clutch
5. Lower relay roller
6. Lower separation roller
4
56
G520V502.WMF
7. Lower paper feed roller
8. Lower pick-up roller
9. Upper separation roller
10. Upper relay roller
11. Upper paper feed roller
12. Upper pick-up roller
G520-5
Options
PICK-UP AND SEPARATION ROLLER RELEASE MECHANISM 30 July 1999
2. DETAILED DESCRIPTIONS
2.1 PICK-UP AND SEPARATION ROLLER RELEASE
MECHANISM
[E]
[A]
[D]
G520500.WMF
[E]
[C]
[A]
[B]
G520D501.WMF
When the paper tray [A] is not inside the paper tr ay unit, the separation roller [B] is
shifted away from the paper feed roller [C], and the pick-up roller [D] stays in the
upper position.
When the pa per tray is put into the paper tray unit, it pushes the release lever [E].
This causes the pick-up roller to move down (top diagram) and the separation roller
to move into contact with the paper feed roller (bottom diagram).
G520-6
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