Keyboard Failure - Gemalto MagIC3 C-series Maintenance Manual

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2.3

KEYBOARD failure

2.3.1 Symptoms
No response of the terminal when a key is pressed.
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2.3.2 Procedure (when original KEYPAD type is equipped)
1. Before opening the Handset, verify that no key is blocked, release the root
cause of blocking if need. End of procedure.
2. Check the KEYPAD membrane (silicon keypad or/and carbon pills may be
damaged). Change it if damaged.
During this operation, check the pads of the PCB_KEYBOARD (dust, corrosion,
etc...), clean them if possible, or change the PCB_KEYBOARD if need.
3. If the failure is still present after having changed only the KEYPAD membrane,
then change the PCB_KEYBOARD too.
2.3.3 Procedure (when FLEX_KEYPAD type is equipped)
!! Do not continu if you did not read MI-15.
Due to FLEX_KEYPAD integration constraints, we strongly advice you to check
PCB_KEYBOARD functionalities when the FLEX_KEYBOARD_SET is open.
1. Before opening the Handset, verify that no key is blocked, release the root
cause of blocking if need. End of procedure.
2. Change the FLEX_KEYPAD (anyway, it is mandatory : refer to MI-15).
During this operation, check the PCB_KEYBOARD on a reference Terminal (a
golden sample).
Change the PCB_KEYBOARD if failure occurs.
Ref: 22000-01-MAN-I-09010
Copyright Gemalto – 2009
3
MagIC C-series - MAINTENANCE MANUAL
Chapter 2 : TROUBLESHOOTING
Keyboard failure
Keyboard failure
Sept 2009
No disclosure to a third party without prior written consent of Gemalto
Ref.
MI 6
MI 5
MI 5
Ref.
MI 6
MI 5
Ch.2 - 20/32