To gain access to Diagnostic mode

1Unplug (or turn off) the product from the power source.

2Press and hold down VOLUME, STOP/CLEAR, and 1 on the one-touch keypad simultaneously.

3Continue to hold down the buttons while you plug back in (or turn on) the product, through the entire power-on sequence.

The table below shows the tests and button sequences to perform in Diagnostic mode.

To perform this test

Press these buttons

 

 

Toggle LED1 on/off

1 or 5 on the one-touch keypad

 

 

Toggle LED2 on/off

2 or 6 on the one-touch keypad

 

 

Access LCD pattern 1

1 on the numeric keypad, <, or >

(solid fill)

 

 

 

Access LCD pattern 2

2 or 8 on the numeric keypad

(empty fill)

 

 

 

Access LCD pattern 3

3 or 9 on the numeric keypad, or

(> fill)

REDUCE/ENLARGE

 

 

Access LCD pattern 4

4 on the numeric keypad or 3 or 7 on

(H fill)

the one-touch keypad

 

 

Access LCD pattern 5

5 or 0 on the numeric keypad, or

(frame fill)

RESOLUTION

 

 

Access LCD pattern 6

6 on the numeric keypad

(check fill)

 

 

 

Access LCD pattern 7

7 on the numeric keypad or RE DIAL/

(ROM check)

PAUSE

 

 

Access firmware version number

#, *, or 10 on the one-touch keypad

 

 

114 Chapter 2 – Service mode

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