Toshiba MMU-AP0072WH, Service Manual

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123
P.C. board (MCC-1402)
EPROM Notch
Notch
IC socket
EPROM (IC10)
Align notch directions of IC socket
and EEPROM for installation.
Procedure 3 : Writing-in of setup contents to EEPROM
(The EEPROM contents which are installed on the service P.C. board have been set up at shipment from the factory.)
1. Push SET + CL + TEST buttons simultaneously for 4 seconds or more.
1
(
ALL
is displayed in the UNIT No box.)
In this time,
10
is displayed in the CODE No. (DN). The fan of the indoor unit operates, and also starts
swinging in a model with louver.
2. Using temperature setup
TEMP.
buttons, the CODE No. (DN) can be moved one step up 1 or down one by
one.
3
3. First set up the type and capacity code of the indoor unit.
(The data at shipment from the factory is written in EEPROM by changing the type and capacity code.)
1) Set
10
to the CODE No. (DN). (As before)
2) Using the timer time
TIME
buttons, set up the type.
4
(For example, 0002 indicates 2-way Air Discharge Cassette type.): Refer to the attached table.
3) Push
SET
button. (OK if display goes on.)
5
4) Using temperature setup
TEMP.
buttons, set
11
to the CODE No. (DN).
5) Using the timer time
TIME
buttons, set up the capacity code.
(For example, 0012 indicates 27 class.): Refer to the attached table.
6) Push
SET
button. (OK if display goes on.)
7) Push
TEST
button to return to the normal stop status.
4. In the next, the contents such as address setup, which were set up at the local site after installation are
written in EEPROM. Execute again the operation in the above item 1).
5. Using temperature setup
TEMP.
buttons, set
01
to the CODE No. (DN).
(Lighting time setup for filter sign)
6. Compare the contents of the setup data which is displayed in this time with contents noted in a memo in
Procedure 1 and customer’s information.
1) If data is incorrect, change it using the timer time
TIME
buttons so that it matches with contents noted in
a memo, and then push
SET
button. (OK if display goes on.)
2) Do nothing if data is same as those in the memo.
7. Using temperature setup
TEMP.
buttons, change the CODE No. (DN).
Check also the contents of the setup data and then change them it to those in the memo.
8. Then repeat operations in items 6. and 7.
9. After setup operation, push
TEST
button to return to the normal stop status.
6
In a group operation, turn off the power supply once, return the group wires between indoor units and CN41
connectors as before, and then turn on power of all the indoor units.
(It requires approx. 1 minute to operate the remote controller.)
∗
The CODE No. (DN) is consisted with
01
to
FF
. DN No. may jump on the way.
Even if pushing
SET
button after changing the data incorrectly, the data can be returned to one before
change by pushing CL button before changing the CODE No. (DN).
<EEPROM layout>
EEPROM (IC10) is attached to IC socket. To remove it, use a pair of tweezers, etc. To attach EEPROM, ar-
range the direction as shown in the following figures.
∗
In exchanging time, pay attention not to bend the lead wire of IC.