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Problem Resolution 5Ć63
Table 5-30. Significant Diagnostic Code Digits
Significant Diagnostic Code Digits
Diagnostic
Code Digit
900/950
Diagnostic
Code Digit
700/750
Description
2 9 DCN (disconnect) Received?
5 8 Receive Mode?
Transmit Mode?
6 1 ECM Used
Standard or Non-Standard
Group 3 mode?
8 2 Resolution and coding of data.
9 3 Communication Speed.
12 10 RTN received?
Test Modes on the HP FAX-900 and FAX-950
HP fax 900 machines contain internal diagnostics that initialize settings, set fax parameters, and test the product’s
operation. Some test modes have uses other than for troubleshooting. Table 5-31 summarizes the test modes.
Table 5-31. List of HP Fax Test Modes on the HP FAX-900 and FAX-950
Test Mode
Number
Description
0 Prints a test pattern to check the GPM
(graphics print mechanism)
1 Identifies function parameters for changing
settings
3 Prints a listing of the function parameters
4 Generates transmission speed signals
5 Generates fax machine tone signals
6 RAM initialization
7 Generates DTMF signals
9 Tests the document memory RAM
10 Tests the message window, panel, and
scanner LEDs
Entering Test Mode on the HP FAX-900 and FAX-950
Test mode is an unlisted choice under Function 7 Set Mode. to reach the test mode menu, use this sequence:
Menu
→
Dial/Space
Tone
→
x 4
→
L
PRS
→
7
Start
Test
Mode No.
→
1. From the standby mode (message window showing date and time), press Menu, then press 7.