Precautions Regarding Operations; Precautions When Carrying Out Fip - Star Micronics LS-5 SERIES Technical Manual

TROUBLESHOOTING

1-3. Precautions Regarding Operations

1. Electrical box
When checking operations with the cover removed from the electrical box and the power turned on, remove the
connector on the HVPS (P/J111), unless otherwise indicated.
(Since the exit sensor has been removed, however, the error message "PAPER JAMMING" will be displayed on the
control panel when printing is carried out.)
2. Be careful to avoid burns when touching high-temperature components.
3. When working with the equipment, use wrist bands and other means of grounding whenever possible, to discharge
static electricity from the operator's body and avoid electrical shock.

1-4. Precautions When Carrying Out FIP

1. FIP assumes that the main logic board is functioning normally. However, if the problem cannot be corrected using
the troubleshooting procedures, the main logic board should be replaced and operation checked.
2. When FIP is used to carry out troubleshooting procedures, a normal MCU PCB and EPX toner cartridge should be
on hand and ready for use, in order to distinguish the cause of the breakdown.
3. With the "Step 1" carried out as part of FIP, the components making up the main parts to be confirmed, as well as
any related parts, must be checked in addition to the parts listed under "Main Parts to be Checked".
4. When the FIP procedures indicate that the power should be turned on, this should be done in online mode unless
otherwise specified.
5. Connectors are marked as indicated below.
"P/J12" → Indicates that connector (P/J12) is connected.
"P12" → Plug side with connector (P/J12) disconnected (except when connected directly to PCB)
"J12" → Jack side with connector (P/J12) disconnected (except when connected directly to PCB)
↔
6. The item "P/J1-2PIN
be connected to Pin 2 of P/J1, and the negative (–) side should be connected to Pin 4 of P/J3 for measurement.
↔
7. With the item "P/J1
all of the corresponding terminals between P/J1 and P/J2.
8. When measuring the voltage, set the EPX toner cartridge and paper cassette in place even if they are not particularly
required for the measurement, and close the front cover (the interlock switch will be ON). Then turn on the power
supply and measure the voltage.
9. The values noted in FIP should be taken as a general guide, and if the value measured for the voltage is in close
proximity to the rated voltage value, it should be judged acceptable.
10. Parts which must always be removed, or operation steps to be carried out in order for confirmation to be carried out
in FIP are not marked in any particular way.
11. Replacement of parts which are considered to be possible sources of problems is indicated in FIP. Replace those parts,
as well as their component parts, and confirm the operation.
P/J3-4PIN" in FIP indicates that the positive (+) side of the measuring instrument should
P/J2" in FIP, please refer to Chapter 4, Section 5, "Connection Wiring Diagram", and measure
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