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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to inform any body or authority about it.
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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

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3.2. Tools and material
Cross screwdriver PH2
Thread locker for weak or middle strength e.g.LOCTITE 222 (weak strength),
LOCTITE 243 (middle strength)
5 mm open end wrench
3.3. Procedure for replacement –holder for easy replacement
1. Unmount the computer from the vehicle. Follow instructions in chapter 2.2. –
Disassembling. Disassembling of the unit isn’t necessary.
2. Unscrew four M3 headed screws which fastens backup battery holder.
Fig. 7 - Screws which fastens backup battery holder
Battery
module
demounting
4x M3

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3. Carefully pull out backup battery holder. Right direction for pulling is marked
by red arrow.
Fig. 8 - Direction for pulling of backup battery holder
1. Unscrew two M3 headed screws. Screws are secured by thread locker.
Replace the backup battery module with a new one. Secure screws again by
thread locker .
Fig. 9 - Fixing the battery module in
battery module holder
Fig. 10 - Removing the battery mo-
dule from the holder
Battery
module
replacement
2x M3

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1. Attach the backup battery holder on the unit back cover. Watch out for right
orientation of the holder. Male connector on back cover must fit with female
connector on backup battery holder. All pins ofconnectors must be concentric.
Wrong handling may cause destroying of battery module !
Fig. 11 - Orientation of attaching the backup battery holder
2. For backup battery holder mounting use four M3 headed screws with split and
flat washers. Right order of mounting in direction from the back cover is flat
washer, split washer and screw.
Battery
module
mounting

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3.4. Procedure for replacement –built-in module
1. Unmount the computer from the vehicle. Follow instructions in chapter 2.2. –
Disassembling. Backup battery module islocated on motherboard close to the
buzzer and 26-wire cable connector.
Fig. 12 - Location of built-in backup battery module
2. Unscrew two M3 headed screws. Screws are secured by thread locker. It´s
recommended to hold the columns using 5 mm open end wrench during
screwing.
Fig. 13 - Demounting of built-in backup battery module
3. Replace the backup battery module with a new one.
4. Screw the new module using thread locker.
5. Assemble the computer according to the procedure described in chapter 2.3.
–Assembling.
Battery
module
demounting
Battery
module
mounting
2x M3

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4. Cleaning
There are cleaning ways of AP9xxx computer series as follows:
Front panel and display screen area have to be cleaned with dry or wet cloth. It’s
necessary to use cleaning agents which cannot cause scratches on screen area
or front panel foil. Computer unmounting from vehicle is not necessary.
Dust settles on panel computer’s electronics and cooler, so thermal transmission
between computer parts and ambient air is worse. Because of that dust has to be
removed. Without disassembly the removal can be done by vacuum cleaner.
Depending on the dustiness of the environment the cleaning without disassembly
can be insufficient.
Disassemble the computer according to the procedure described in chapter 2.2.
–Disassembling.
Cleaning has to be done by dry soft brush or vacuum cleaner.
Assemble the computer according to the procedure described in chapter 2.3. –
Assembling after cleaning process.
Front panel
cleaning
Electronics
cleaning
without
disassembly
Electronics
cleaning with
disassembly

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5. Waste disposal
Backup battery module contains lithium battery. The battery is a dangerous
waste. Therefore, it must be delivered to places specified for that purpose.
Disposal of empty batteries and accumulators must not be in contrary to valid
regulations.
Battery
disposal