Sharp FO-CC500 Service Manual page 16

FO-CC500A
FO-K01A
2. Diagnostic items (Fax machine)
ITEM No. Contents
1 SOFT SWITCH MODE
2 ROM & RAM CHECK
3 AGING MODE
4 PANEL KEY TEST
5 CHECK PATTERN
6 SIGNAL SEND MODE
7 MEMORY CLEAR
8 SHADING MODE
9 ALL BLACK PRINT
10 AUTO FEEDER MODE
11 ENTRY DATA SEND
12 ENTRY DATA RCV.
13 FLASH MEM. CHECK
14 FLASH MEM. CLEAR
15 RF TX MODE
16 RF RX MODE
17 DTMF CDL ID RX
18 KEYPAD TEST MODE
3. Diagnostic items description
3. 1. Soft switch mode
Used to change the soft switch settings.
The soft switch which is stored internally is set by using the keys.
The available soft switches are SW-A1 to SW-N3.
The content of soft switches is shown in page 2-10 to 2-23.
The contents are set to factory default settings.
The contents of the soft switch setting backed up.
3. 2. ROM & RAM check
Used to do the ROM sum check and the RAM read/write test and to
clear the RAM. The test results will be given by means of beeps. A long
beep means "all checked successful". A short beep or beeps mean an
IC in error, with the number of beeps indicating which IC failed. The test
results also be printed.
System ID of FAX machine and Cordless Handset preserves.
→ ROM
1 beep
→ S-RAM/D-RAM
2 beeps
3. 3. Aging mode
If any document is first present, copying will be executed sheet by sheet.
If no document is present, the check pattern will be printed sheet by
sheet. This operation will be executed at a rate of one sheet per 5 min-
utes, and will be ended at a total of 10 sheets.
3. 4. Panel key test
This mode is used to check whether each key operates properly or not.
Press the key on the operation panel, and the key will be displayed on
the display. Therefore, press all keys. At this time, finally press the STOP
key.
When the STOP key is pressed, the keys which are not judged as
"pressed" will be printed on the result list.
• LED part of the contact image sensor (CIS) is kept on during the term
from when "START" of the panel test mode to end with the STOP
key.
Soft switches are displayed and changed. List can be output.
ROM sum-check mand RAM read/write check.
10 sheets of check patterns are output every 5 minutes per sheet.
Panel keys are tested. Result list is output.
Check pattern is output.
Send the various signals. Signal is changed by pressing START key.
Back-up memory is cleared, and is set at delivery.
Shading compensation is performed in this mode.
To check the print head, whole dots are printed over the interval of 2 m.
Insertion and discharge of document are tested.
Registered content is sent.
Registered content is received, and its list is output.
Checks flash memory write/read.
Checks flash memory clearing.
RF signal send test mode.
RF signal receive test mode.
Registered content is received, and its list is output.
I/F for DSS engine's DIAG mode.
3. 5. Check pattern
This mode is used to check the state of the printing head. It is ended
1
with the following pattern printed on one printing sheet.
2
White/Black(3/8 mm alternately) >>> About 30 mm long.
3 All Black
4 All White
End White
Void area
4 mm
Pin off
16.5 mm
2 – 3
Function
>>> About 30 mm long
>>> From All Black end to Pin OFF
>>> From Pin OFF to 16.5 mm long
LETTER: 216 mm
LEGAL: 216 mm
A4: 210 mm
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