Oki OF5600, Service Manual

Page: 350 / 448

Board Descriptions A - 66 OF 5300/5600 Serv Man, P/N 59278301
A3.13 TQSB (Second tray) Circuit Diagram: option
1. Block diagram
This board is installed as the optional board for the unit.
Figure A3.13.1 shows a block diagram of the second tray (option).
2. Function
Second tray consists of the following functions:
•
Paper capacity: 500 sheets
• Paper size: A4, Letter, Legal
• Paper-size selection: Automatic
• Cassette/no-cassette selection: Automatic
• Paper/no-paper selection: Automatic
• Paper route open to facsimile transceiver unit : Automatic decision
Control method:
When second tray is installed with the facsimile transceiver unit, the tray is connected to
the facsimile transceiver unit by a connecting cable. The tray is controlled by the com-
mand from CPU of PU (printer unit) section.
X'tal
MOS CPU
Open collector
Filter
Open collector
CN14 CN1
OPSDP-N
OPSCLK-N
OPSD-N
3
2
4
3
2
4
M17 2nd tray (option)
M
1
2
3
4
Transistor
Motor
Motor drive
Pull-up resistor
Inlet sensor
Paper end sensor
SIZE
7
5
8
6
0 VP
SGND
+30 V
+5 V
0 VP
+30 V
+5 V
SGND
IOGA
IC2
MOTOR
Block Diagram of 2nd Tray (Figure A3.13.1)