EXFO MaxTester series Operation and maintenance manual

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NOTICE
This information applies only to the
MaxTester Series units.
Replacing Batteries
Your unit uses a lithium-polymer battery that has been especially designed
for EXFO. For this reason, you can only replace the main battery with a
battery designed for your MaxTester unit.
You can purchase new batteries from EXFO.
WARNING
Do not throw batteries into fire or water and do not short-circuit
the battery’s electrical contacts. Do not disassemble.
WARNING
To avoid serious injuries as well as irreparable damage to your
unit, ALWAYS TURN OFF YOUR UNIT (shutdown mode, not
suspend) and DISCONNECT IT FROM THE AC POWER.
Be careful not to drop metal objects such as screws inside the
unit. These could cause a short-circuit leading to a fire or an
explosion.
CAUTION
Electrostatic discharge (ESD) damage can cause complete or
intermittent equipment failures.
Always use an ESD-preventive wrist or ankle strap when
handling the unit while it is open. Ensure that the antistatic
strap makes good skin contact and that the end of its wire is
grounded properly.
All the components that you should be handling are identified
in the procedure hereafter. Do not touch any other component
inside the unit either with tools or your fingers.
To avoid damaging the new battery, handle it with care.
CAUTION
Ensure that no foreign object falls inside the unit. This may cause
irreparable damage to your unit.

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To replace the main battery:
1. Press and hold the On/Off button a few seconds until the unit beeps
once to put it in shutdown mode.
2. Disconnect the unit from its external power source.
3. Put on an antistatic wrist (or ankle) strap and ensure that the end of its
wire is grounded properly.
4. Position the unit so that its front panel rests on a flat surface such as a
table.
5. Using the provided hex key (“Allen” key), remove the two top screws
that secure the back of the unit in place.
CAUTION
Use lithium-polymer batteries of the same type and model only. Use
of other batteries may damage your unit and compromise your
safety.
Top screws securing the
back of the unit

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6. If necessary, remove the stand so that it does not fall when you open
the unit’s casing later:
6a. Release the stand from its retaining clip by pulling it upwards.
6b. Remove the blockers and the stand.
Stand’s retaining clip
Stand blocker
(shown in grey)

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7. Using the provided hex key (“Allen” key), remove the two bottom
screws that secure the back of the unit in place.
8. Hold the back of the unit by its sides and fold it down carefully until it
rests completely flat.
CAUTION
To avoid damaging your unit, open it very carefully.
Do not pull on the flat cable that links the back panel to the front
panel. On some models, the flat cable is not present.
Bottom screws securing the
back of the unit

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9. Using a screwdriver, remove the two screws securing the retaining
plate of the battery in place.
10. Remove the retaining plate so that you can see the battery.
11. Disconnect the battery cable from the unit by pulling on its connector.
Note: To simplify the illustration, the battery cable does not appear in full
between its connector and the battery itself.
CAUTION
Be careful not to touch any component inside the unit when you
disconnect the battery cable.
Screws securing the
retaining plate
Battery retaining plate
(shown in grey)
Battery cable connector
(shown in grey)
Battery
Battery cable
(only the ends of the cable are shown)

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12. Hold the battery by its sides and pull it up carefully.
13. Place the new battery into your unit so that its cable is on the left, and
on the lower part of the battery casing as shown below.
14. Connect the battery cable to the unit by pushing its connector in place.
IMPORTANT
Wait at least 30 seconds before connecting the new battery. This
will ensure that you unit detects it properly.
Battery cable
Battery cable connector
(shown in grey)
Battery
Battery cable
(only the ends of the cable are shown)

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15. Place the retaining plate back over the battery, ensuring that the holes
for the screws are well-aligned with those in the casing of the unit.
16. Using a screwdriver, put back the two screws securing the retaining
plate of the battery in place.
17. Hold the back of the unit by its sides and place it back on the unit
carefully.
18. If desired, put the unit’s stand back in place:
18a.Align the side of the stand blockers with the side of the anchor
eyelets, and then slide the blockers towards the eyelets until they
stop. There should be no gap between the blockers and the
eyelets.
18b.Using the provided hex key (“Allen” key), put the two top screws
back in place (in the center of the blockers).
18c. Hold the stand by its sides, and then slightly widen it to be able to
insert it into the blockers.
18d.Release the stand as soon as it is properly inserted into the
blockers.
18e.If desired, secure the stand in its retaining clip by pushing it
downwards.
Screws securing the
retaining plate
Battery retaining plate
(shown in grey)
Stand blocker
(shown in grey)
Anchor eyelet

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19. Using the provided hex key (“Allen” key), put back the screws securing
the back of the unit in place.
Note: If you have reinstalled the stand on your unit, you have only the two bottom
screws to put back.
20. Remove the antistatic strap.
21. Connect your unit to an external power source to allow the new
battery to charge.
Note: If the battery is not connected properly, the unit will not turn up or start to
charge the battery automatically. In this case, repeat the replacement
procedure. If the problem persists, contact EXFO.