Sharp FO-71 /51/11 - Chapter 6. Circuit Schematics and; Diagnostics and Service Soft Switch

FO-71TH/UX-61TH/GQ-56TH/FO-51TH
UX-41TH/GQ-31TH/UX-21TH/FO-11TH/GQ-11TH
[2] Diagnostics and service soft switch
1. Operating procedure
(1) Entering the diagnostic mode
Press FUNC → 9 → → 8 → # → 7 , and the following display will appear.
ROM Ver. TA50 (TA43 ,TA37 ) After 2 sec: DIAG MODE
TA50 (FO-71/UX-61/GQ-56)
TA43 (FO-51/UX-41/GQ-31)
TA37 (UX-21/FO-11/GQ-11)
Then press the START key and country name selected by country select will appear. Select the desired item with the key or the # key or select
with the direct key. Enter the mode with the START key.
(Diag•specifications)
If the diag mode cannot be set, repeat the diag mode operation, per-
forming the following operation.
After the power is turned on and "WAIT A MOMENT" is indicated, press
the STOP key.
In relation with the process response (request from Production
Engineering) "WAIT A MOMENT" clock indication may appear depending
on STOP key timing. If the STOP key is held down, "MEMORY CLEAR?"
appears.
FUNC
DIAG MODE
9 8 7
START —Soft switch mode
START
AROM & RAM check
START
—Aging mode
START
—Panel check mode
START
BCheck pattern
START CSignal send mode
START
START
KEY
STOP
KEY
+
"Power ON"
Memory clear
(Work + Backup)
TA50 ,TA43
All black mode
START
START
Auto feeder mode
START
—
Entry data send
START
E
Entry data receive
Cutter aging
(FO-71/UX-61/GQ-56 only)
STARTD
Shading mode
START
—
—
—
START —Memory clear
TA37
COUNTRY NAME
2 – 2
2. Diagnostic items
ITEM No. DIRECT Key Contents
1 — SOFT SWITCH MODE Soft switches are displayed and changed. List can be output.
2 A ROM & RAM CHECK ROM is sum-checked, and RAM is matched. Result list is output.
3 — AGING MODE 10 sheets of check patterns are output every 5 minutes per sheet.
4 — PANEL CKECK MODE Panel keys are tested. Result list is output.
5 B CHECK PATTERN 2 sheets of check patterns are output.
6 C SIGNAL SEND MODE Various signals of FAX communication are output.
7 — MEMORY CLEAR Back-up memory is cleared, and is set at delivery.
8 — SHADING MODE Shading compensation is performed in this mode.
9 D ALL BLACK PRINT To check the print head, whole dots are printed over the interval of 2 m.
10 E AUTO FEEDER MODE Insertion and discharge of document are tested.
11 — ENTRY DATA SEND Registered content is sent.
12 — ENTRY DATA RECEIVE Registered content is received, and its list is output.
13 — CUTTER AGING Recording paper is successively cut. (FO-71/UX-61/GQ-56 only)
Function