2-2-2. RAM Test (Function 30)
1. Enter the service mode (see section 2-2-1).
2. Press Function, enter 30, then press SET.
3. The machine starts to check the SRAM and the two DRAMs without clearing any RAM data stored.
If the RAM test succeeded, the machine prints ‘‘RAM TEST OK’’, and goes to the Key Test.
If the RAM test failed, the machine displays ‘‘RAM ERROR AT ##AAAA’’ (## = type of RAM; AAAA = address)
for 3 s, then ‘‘RAM TEST FAILED’’ is printed
(Type of RAM: 09 = SRAM, 00 - DRAM0, 10 - DRAM1)
After this test, the machine automatically goes into function 31.
2-2-3. Key Test (Function 31)
1. Enter the service mode (see section 2-2-1).
2. Press Function, enter 31, then press SET.
3. The display shows the name of a key. If the key is pressed the display shows the next one until the last key ‘‘J’’
is pressed.
If the key test was successful, the machine prints ‘‘KEY TEST OK’’.
If the key test was failed or aborted, the machine prints ‘‘KEY TEST FAILED.
After this test, the machine automatically goes to the LED test.
Display
Key
Display
Key
Display
Key
1 through #
Keys in the
dialpad
ONL
On Hook Dial
CLR
Clear
SPE
Speed Dial
FUN
Function
FIN
Detail/Fine
MLT
Memory
LEF
Softkey (Left)
STO
Stop
AUT
Auto Select
MID
Softkey (Middle) CPY
Copy
RED
Redial
RIG
Softkey (Right)
STA
Start
HOL
R
PHO
Halftone
A through J
Quick Dial keys
2-2-4. LED Test (Function 32)
1. Enter the service mode (see section 2-2-1).
2. Press Function, enter 32, then press SET.
3. All the LEDs on the operation panel blink sequentially until OK or ERROR is pressed.
If OK is pressed, the machine prints ‘‘LED TEST OK’’ and goes to the LCD test.
If ERROR is pressed, the machine prints ‘‘LED TEST FAILED’’, and goes to the LCD test.
2-2-5. LCD Test (Function 33)
1. Enter the service mode (see section 2-2-1).
2. Press Function, enter 33, then press SET.
3. The two lines on the LCD alternately show a line of solid black characters until OK or ERROR is pressed.
If OK is pressed, the machine prints ‘‘LCD TEST OK’’ and goes to the Speaker Test.
If ERROR is pressed, the machine prints ‘‘LCD TEST FAILED’’, and goes to the Speaker Test.
2-3
