Chapter 3. Service Reset And Master Reset - Sharp ER-A450T Service Manual

CHAPTER 3. SERVICE RESET AND MASTER RESET

1. SERVICE reset (Program Loop Reset)
Used to return the machine back to its operational state after a lock-
up has occurred.
Procedure
Method 1
1) Unplug the AC cord from the wall outlet.
2) Set the mode switch to (SRV ) position.
3) Plug in the AC cord to the wall outlet.
4) Turn to (SRV) position from (SRV ) position.
Method 2
1) Set the mode switch to PGM2 position.
2) Turn off the AC switch.
3) While holding down JOURNAL FEED key and RECEIPT FEED
key, Turn on the AC switch.
Note: When disassembling and reassembling always power up us-
ing method 1 only. Method 2 will not reset the CKDC8.
Note: SRV programming job#926-B must be set to "4" to allow PGM
program loop reset.
2. Master reset (All memory clear)
There are two possible methods to perform a master reset.
MRS-1
Used to clear all memory contents and return machine back to its
initial settings and return keyboard back to default keyboard layout.
Procedure
1) Unplug the AC cord from the wall outlet.
2) Set the MODE switch to the (SRV ) position.
3) Plug in the AC cord to the wall outlet.
4) While holding down JOURNAL FEED key, turn to (SRV) position
from (SRV ) position.
MRS-2
Used to clear all memory and keyboard contents.
This reset returns all programming back to defaults. The keyboard
must be entered by hand.
This reset is used if an application needs different keyboard layout
other than that supplied by a normal MRS-1.
Procedure
1) Unplug the AC cord from the wall outlet.
2) Set the MODE switch to the (SRV ) position.
3) Plug in the AC cord to the wall outlet.
4) While holding down JOURNAL FEED key and RECEIPT FEED
key, turn to (SRV) position from (SRV ) position.
5) Key position assignment:
After the execution of MRS-2, only the RECEIPT FEED and
JOURNAL FEED keys can remain effective on key assignment.
Any key can be assigned on any key position on the main key-
board.
[key setup procedure]
MRS-2 0 Key position set
executed
NOTES:
1: When the 0 key is pressed, the key of the key number on display
is disabled.
2: Push the key on the position to be assigned. With this, the key of
the key number on display is assigned to that key position.
Key number Key name
1 Numeric key "0"
2 Numeric key "1"
3 Numeric key "2"
4 Numeric key "3"
5 Numeric key "4"
6 Numeric key "5"
7 Numeric key "6"
8 Numeric key "7"
9 Numeric key "8"
3 – 1
*2
Free key Free key setup
complete.
*1
0
Disable
Key number Key name
10 Numeric key "9"
11 Numeric key "00"
12 Numeric key "000"
13 Decimal point key
14 CL key
15 @/FOR
16 SBTL key
17 CA/AT key