Amit AP9 Series User manual

ap9xxx_mr_en_100
AP9xxx
Series of panel computers
for rolling stock
Service manual
Release 1.00

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AMiT, spol. s r.o. does not provide any warranty concerning the contents of this
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Copyright (c) 2015, AMiT, spol. s r. o.
Producer: AMiT, spol. s r. o.
Naskové 3/1100, 150 00 Praha
www.amit.cz
Technical support: [email protected]

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Contents History of revisions............................................................................ 4
Related documentation...................................................................... 4
1. Introduction.............................................................................. 5
2. Disassembling / assembling................................................... 6
2.1. Tools and material............................................................................. 6
2.2. Disassembling................................................................................... 6
2.3. Assembling........................................................................................ 9
3. Backup battery replacement................................................. 10
3.1. Determining location of backup battery module............................... 10
3.2. Tools and material........................................................................... 11
3.3. Procedure for replacement –holder for easy replacement.............. 11
3.4. Procedure for replacement –built-in module................................... 14
4. Cleaning.................................................................................. 15
5. Waste disposal....................................................................... 16

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History of revisions
Document name: ap9xxx_mr_en_100.pdf
Author: Marian Schaubmar
Release
Date
Changes
100
20. 3. 2015
New document
Related documentation
1. AP9xxx Series of panel computers for rolling stock –Operation manual
file: ap9xxx_g_en_xxx.pdf
2. Backup battery module –Datasheet
file: sp_mb247720_d_en_xxx.pdf

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1. Introduction
This manual describes the procedure of backup battery replacement, cleaning of
internal electronics and disassembling / assembling of AP9xxx panel computer
series.
For most procedures it is necessary to unmount the computer from vehicle, in
some cases it is not necessary to disassemble the whole unit. Disassembling /
assembling is described in special chapter 2. –Disassembling / assembling. For
backup battery replacement and cleaning specifics follow chapters 3. –Backup
battery replacement and 4. –Cleaning.

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2. Disassembling / assembling
Disassembling / assembling of the unit consists of unmounting / mounting the
computer from the vehicle and disassembling / assembling of the unit electronics.
2.1. Tools and material
Tool for releasing screws in the corners of the computer’s front panel
(depends on vehicle project).
Cross screwdriver PH2
Star screwdriver TORX TX10
Tweezers
Weak or middle strength thread locker e.g. LOCTITE 222 (weak strength),
LOCTITE 243 (middle strength)
2.2. Disassembling
1. Disconnect all the connectors from the computer.
2. Unmount the computer from mounting opening in the desk. Computer is
fastened by 4 screws in the corners of front panel.
For access to the backup battery and to the inner electronics of the computer it
is necessary to split the front panel with LCD and back cover which contains the
rest of the electronics. Disassembling has to be done on the working table with
that surface which cannot cause scratches on parts of panel computer especially
display area or front panel foil. See the instructions as follows:
1. Unscrew four M3 head screws in the back cover corners. Use the cross
screwdriver of PH2 size.
Fig. 1 - Back cover screws
2. After unscrewing of the back cover screws the unit must to lie on the back.
We need to lift right side of panel for 5 ÷ 8 cm. Now we have access to inner
cabling of LCD screen. We need to VERY CAREFULLY disconnect cables
from LCD screen using tweezers. Correct directions for pulling off connectors
Unmounting
from vehicle
Disassembling
of the unit
electronics
4x M3

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from LCD screen are marked by red arrows. See Fig. 2. Repairing of broken
connectors caused by wrong handling can be done only by manufacturer.
Fig. 2 - Wiring of LCD display
3. Carefully separate panel from the cover with electronics and disconnect
remaining 26-wire cable. Connector can be removed only when safety levers
on a counterpart connector are unlocked, see Fig. 4.

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Fig. 3 - Splitting of panel and back cover
Fig. 4 - Disconnecting of remaining cables
4. Now we can continue to inner electronic cleaning or backup battery
replacement.

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2.3. Assembling
1. Connect 26-wire connector between panel and back cover.
2. Panel and back cover must to fit together. Be aware of situation when cables
getting stuck between parts of computer. Make sure if 26-wire cable is led
thru middle of cooler, see Fig. 5.
Fig. 5 - Leading of 26-wire cable
3. Before inserting panel to the back cover connect two remaining cables to the
LCD screen. For pressing of connectors to the final position you can use other
side of tweezers.
4. For fastening the back cover and panel use screws with split and flat washers.
Right order of mounting in direction from the back cover is flat washer, split
washer and screw.
5. Now the panel computer is ready for mounting back into the vehicle.

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3. Backup battery replacement
Backup battery is a part of the backup battery module. For ordering information
see chapter Ordering information of relevant Operation manual.
Some of units may be equipped by backup battery holder for easy replacement.
Chapter 3.1. –Determining location of backup battery module can help you to
determine position of backup battery module in your unit.
3.1. Determining location of backup battery module
If is your unit equipped by backup battery holder for easy replacement as
shown in Fig. 6 follow the chapter 3.3. –Procedure for replacement –holder
for easy replacement.
If isn´t your unit equipped by backup battery holder for easy replacement as
shown in Fig. 6 follow the chapter 3.4. –Procedure for replacement –built-in
module.
Fig. 6 - Possible location of backup battery holder on back cover