service manual
FPI 5000 I
510
.03-9
rev. 01.0 - 01/2002
Combined display/key circuit board
The communication between the micro-controller on the main board and the combined display/key circuit
board 95.70.72 (see
figure 1.14
,
figure 1.15
and
figure 1.16
) is based on the simulated I²C bus signals
SCL_SIM and SDA_SIM, the databus signals AD0 through AD7, the read/write signals NRD and NWR, and
the control signals DIS_1, DIS_2 and DIS_3. The connections with the control panel board are made via J372
on the main board. The combined display/key circuit board is also powered via the main board (VCC and
GND). Locally a -15 V power supply voltage and a high frequency AC voltage (for the LCD backplane) are
generated.
Main board: photocells
The photocells PH1 through PH4 each consist of an infrared photodiode as transmitter (TX) and a
phototransistor as receiver (RX). The output voltage of the accompanying Digital to Analogue Converter
(DAC) controls the current through each photodiode. This DAC is the U230 chip in
figure 1.5
. The amplified voltage monitors the total current of the four photodiodes across the resistors R214
and R215. The CPU provides the DAC inputs via the local (simulated; SCL_SIM and SDA_SIM) I²C bus. The
CPU bases the DAC voltage on the relevant input voltage on a ADC channel, which is derived from the
phototransistor output voltage with no paper present. In this way a feedback system ensures that within a
certain valid range of both the DAC settings and the no paper output voltages, the presence/absence of paper
dust on the various photocell lenses is compensated by a higher/lower current (i.e. infrared brightness) through
the relevant photodiode. Readjustments, either to a higher or lower DAC value, take place after each 25 paper
passages. In this way the quality of the paper/no paper decision making is fairly guaranteed. Various error
messages may be issued if the adjustments result in either invalid DAC settings or an invalid no paper output
voltage. The DAC settings are stored in non-volatile FRAM.
Pulse disc, flag switch and micro-switches
The pulse disc PD1 is mounted on the driven sealing track roller. The rotating disc has a number of cogs, which
periodically interrupt the infrared beam between a photodiode and a phototransistor. This results in a stream
of pulses, which eventually are fed to the CPU. The pulses are used for various process timings. There is a
linear relationship between the mechanical displacement and the number of pulses. The pulse count is also
used for verifying the proper rpm rating (i.e. the proper starting and running) of the main motor M1.
The optical flag switch FS1 in the sealing track is based on a pawl which, when triggered, interrupts the
infrared beam between a photodiode and a phototransistor. It starts a pulse count for determining the time at
which the upper reverse roller is lowered to start the sealing. After the passing of the envelope the pawl returns
to its rest position by spring action.
Two micro-switches, MS1 at the side cover and MS2 at the top cover, stop the motor if one or both covers are
opened. An "unsafe" micro-switch directly interrupts the current through the motor relay and stops the motor
immediately.
DFC unit
Double Feed Control is the name usually used for describing a sensor, which in fact is a thickness-measuring
unit. It is an analogue measurement of the thickness of the passing document (set).
The DFC unit is located at the second pair of document input rollers. In this way the measurement is done at
a place where the document (set) is pressed. The DFC unit consists of a Hall sensor located between two
permanent magnets. Via various mechanical devices a document thickness of maximally 4 mm is translated in
a proportional DC output voltage. The output of the Hall sensor is amplified and factory set at a conversion
rate of 1 volt per mm thickness.
The DFC output is fed to an ADC channel of the CPU. Comparing this input data with reference data may
result in an error message. For reasons of operational performance a DAC supplied reference voltage is fed to
the differential amplifier on the small printed circuit board of the DFC unit. The
Summary of Contents for FPI 5000 C
Page 1: ...FPi 5000 Inserting System ILLUSTRATED PARTS LIST SERVICE MANUAL FPI 5000 I FPI 5000 C 1...
Page 2: ...service manual FPI 5000 I rev 01 0 01 2002 FPI 5000 Inserter...
Page 4: ...service manual FPI 5000 I 510 00 1 rev 01 0 01 2002 General...
Page 5: ...service manual FPI 5000 I 510 00 2 rev 01 0 01 2002...
Page 7: ...service manual FPI 5000 I 510 00 4 rev 01 0 01 2002...
Page 13: ...service manual FPI 5000 I 510 00 10 rev 01 0 01 2002 3 2 Unpacking instruction...
Page 15: ...service manual FPI 5000 I 510 00 12 rev 01 0 01 2002...
Page 16: ...service manual FPI 5000 I 510 01 1 rev 01 0 01 2002 Process description...
Page 17: ...service manual FPI 5000 I 510 01 2 rev 01 0 01 2002...
Page 19: ...service manual FPI 5000 I 510 01 4 rev 01 0 01 2002...
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Page 28: ...service manual FPI 5000 I 510 02 1 rev 01 0 01 2002 Mechanical...
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Page 110: ...service manual FPI 5000 I 510 03 1 rev 01 0 01 2002 Electrical...
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Page 188: ...service manual FPI 5000 I 510 04 1 rev 02 0 02 2002 Parts lists...
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Page 193: ...service manual FPI 5000 I 510 04 6 rev 02 0 02 2002 Figure 1...
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Page 237: ...service manual FPI 5000 I 510 04 50 rev 02 0 02 2002 Figure 13...
Page 240: ...service manual FPI 5000 I 510 04 53 rev 02 0 02 2002 Side exit Part number 97 01 52...
Page 241: ...service manual FPI 5000 I 510 04 54 rev 02 0 02 2002 Figure 14...
Page 243: ...service manual FPI 5000 I 510 04 56 rev 02 0 02 2002 Figure 15...
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Page 246: ...service manual FPI 5000 I 510 04 59 rev 02 0 02 2002 Stacker Part number 95 73 51...
Page 247: ...service manual FPI 5000 I 510 04 60 rev 02 0 02 2002 Figure 16...
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