Sony SPP-S2730 - Cordless Telephone, Service Manual

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3
SPP-S2730
SECTION 1
SERVICING NOTES
IF AN ERROR MESSAGE IS DISPLAYED
If the following error message is displayed after the power was turned on, check the items where “1” is indicated.
•
Note on Replacing The EEPROM
After the EEPROM was replaced, write various parameters in the “TEST MODE E” (base unit: see page 14, handset: see page 16). (For
the ID, see “Writing ID Numbers” described below)
Note:
Replacing the EEPROM causes all data such as customer registered recording messages, caller ID data (only when replacing EEPROM in base unit)
and telephone directory (base unit or handset) to be cleared.
RE-REGISTERING ALREADY REGISTERED SET
Initialize the registered information on base unit and all handsets, and then register again all handsets starting with handset 1 by the
method given below. When re-registering the handset, refer to “Registering additional cordless handsets” in the instruction manual. (see
page 8)
– Base unit –
1. Turn the power on.
2. Press three keys of
[1]
,
[EZ ACCESS]
, and
[INTERCOM]
simultaneously to set the test mode.
– Handset –
1. Turn the power on.
2. Press three keys of
[1]
,
[EZ ACCESS]
, and
[INTERCOM]
simultaneously.
WRITING ID NUMBERS (for additional handsets)
The ID numbers are given in decimal notation on the bottom of base unit. If handsets are added, ID can be written in the TEST mode, but
the TEST mode handles ID numbers in hexadecimal notation, thus requiring decimal numbers to be converted into hexadecimal numbers.
Accordingly, when adding the handsets, refer to “Registering additional cordless handsets” in the instruction manual. (see page 8)
However, if the EEPROM was replaced, the handsets cannot be registered by the method mentioned above. In such a case, enter various
parameters except ID numbers in the “TEST MODE E”, and then register the handsets by the method given in the instruction manual.
Also, the ID numbers can be written in the “TEST MODE B”(decimal number) (base unit: see page 15, handset: see page 17).
ERROR=
[][]
00
[][]
00
EEPROM
*1
data error
t
Write correct data to the EEPROM.
ID error t Write correct ID data.
DSP (IC402)
*2
error t Check the DSP (IC402) and its peripheral circuits.
EEPROM
*1
error
t
Check the EEPROM and its peripheral circuits.
*1) Base unit: IC303, Handset: IC122
*2) Base unit only