Sharp FO-2970M Service Manual - Page 9
Diagnostic items description, 1. Fax diagnosis
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FO-2970MU 2. Diagnostic items description 2-1. Fax diagnosis 1) Soft switch mode The soft switches are provided so that each operation mode can be set by using the operation panel. In this mode, these switches can be checked and set. The contents of these switches are backed up. Soft switch mode screen SOFT SWITCH MODE S W 0 1 = 0 0 0 0 0 0 0 0 Switch 1 2 3 4 5 6 7 8 :DATA No. 1 No. Switch number selection Data • Press START key for setting of the next soft switch. If the soft switch number is the final, pressing START key will exit the soft switch mode. • Enter two digits of a soft switch number to set the switch number. SOFT SWITCH MODE S W 0 1 = 0 0 1 0 0 0 0 0 SOFT SWITCH MODE S W 1 SOFT SWITCH MODE S W 1 6 = 0 0 0 1 0 1 1 0 1 6 2 Data number selection The cursor position shows the data to be set. Pressing # key moves the cursor to the right. If, however, the cursor is on data number 8, pressing # key shifts the cursor to data number 1 of the next switch number. If the switch number is the final, press- ing # key will exit the soft switch mode. Pressing key moves the cursor to the left. If, however, the cursor is on data number 1, pressing key shifts the cursor to data number 1 of the former switch number. If the switch number is 1, pressing 3 key will not move the cursor and the error buzzer will sound. Data setting method Press the FUNCTION key, and the data at the position of the cursor will be reversed to 0 when it is 1, or to 1 when it is 0. (If the soft switch can not be changed at the bit the error buzzer will sound with the process not received.), When you press the START key or the # key and the cursor moves to the next switch position, the changes in the contents of the previous switch position will be saved. If you do not 4 want to save your changes, press the STOP key. Outputting method of soft switch list In the soft switch mode, press the COPY/HELP key, and the soft switch list will be output. If the recording paper runs out or is clogged, condition is held until 5 recording paper is prepared, and an error buzzer doesn't ring. Prohibition against changing individual pieces of data and synchro- nized data changes At present, there is no prohibition against changing data individually and there is also no capability to make synchronized changes to data. (The ECM may be turned on or off while using image memory.) 2) ROM & RAM check ROM executes the sum check, and RAM executes the matching test. If any error occurs, the buzzer will inform it. (Refer to the following table). Finally, the result will be printed. Number of buzzer sounds Device checked 1 time MAIN ROM 2 times S-RAM 3 times D-RAM 4 times CPU integrated ROM/RAM The buzzer beep pattern is: on for 0.25 seconds and then off for 0.25 seconds. 4) Panel key test This is used to check whether each key is normally operated or not. According to the key input, LCD is displayed. 1) When the START key is pressed while PANEL KEY TEST is being displayed, a test will start. Since all of the LEDs will light up in sequence until the test is finished, the LED operation can be checked as well. 2) Press all of the keys one at a time, but do not press the STOP key. Every time a key is pressed, the name of that key will appear in the display. 3) Finally, press the STOP key. If there was a key you pressed that was not detected when the STOP key is pressed, PANEL TEST NG! will be displayed. When all of the keys have been pressed and detected, PANEL TEST OK! will be displayed. Then the display will go blank, which is OK. If there was an NG, any key which was not pressed or not detected will be printed in the result table. (For details about the printout format, see the list function specifications.) 5) Optical adjust mode In this mode, the optical system is adjusted. Document feeding can be started by pressing the START key two times. It can be stopped by pressing the STOP key. 6) Check pattern mode The effective printing area used will be according to the size specified. A copy of a pattern will be printed, and the printing will be complete. 7) Signal send mode This mode is used to send various signals to the circuit during FAX communication. Every push of START key sends a signal in the following sequence. [ 1] No signals (CML-ON) [ 2] 14400bps (V. 33) [ 3] 12000bps (V. 33) [ 4] 14400bps (V. 17) [ 5] 12000bps (V. 17) [ 6] 9600bps (V. 17) [ 7] 7200bps (V. 17) [ 8] 9600bps (V. 29) [ 9] 7200bps (V. 29) [10] 4800bps (V27ter) [11] 2400bps (V27ter) [12] 300bps (FLAG) [13] 2100Hz (CED) [14] 1100Hz (CNG) [15] END 8) Memory clear mode This mode is used to clear the backup memory and to reset to the factory default setting. The content of each setting will be cleared. Then, the initialized list be output. 3) Aging mode If any document is set up in the first state (when started), copying will be executed. If it is not set up, "check pattern" of the print diagnosis is output at the intervals of 1 sheet/5 minutes. (A total of 10 sheets are output.) 2 - 5