Sharp ER-A220 (serv.man2) Service Manual ▷ View online
[ALL KEY LAYOUT]
Display the following message on the front display.
3) Check items
a) Check of the display in the test and the content of end print.
4) Test termination
This check is terminated automatically.
The test terminates with the test and message printed
[5] Mode switch test
1) Key operation
2) Functional description
Display the following message on the front display.
When the Mode Switch is switched over in the following order, a
numerical value corresponding to each position of mode switch is
displayed at X.
displayed at X.
1 In the OFF mode, the number 9 appears momentarily and then
the power turns off.
2 Turn the mode switch from the X2/Z2 mode to the SRV mode to
finish the test.
The number x should be read in correct order. (When the contacts are
open, the number 9 is displayed.)
open, the number 9 is displayed.)
3) Check items
a) Check of the display in the test and the content of end print.
4) Test termination
The test terminates with the test and message printed
[6] Printer sensor test
1) Key operation
2) Functional description
State of the paper near end sensor is sensed and displayed.
3) Check items
Displayed
Description
X
C
paper : existed
O
paper : Not existed
4) Test termination
Press any key. The test terminates with the test and message printed
[7] Drawer open test (For standard test)
1) Key operation
<ALL KEY>
SUMCHECK DATA = 148 + 132 + 144 + 147 + ········· = 3383
<ER-A220 STANDARD KEY BOARD LAYOUT>
067 051 035 019 003
068 052 036 020 004
066 050 034 018 002
069 053 037 021 005
065 049 033
001
064 048 032
000
017
016
115 099 083
116 100 084
114 098 082
117 101 085
113 097 081
117 096 080
148 132
144 147 131
145 146 130
051
035 019 003
068 052 036 020 004
066 050 034
002
069 053 037
005
065 049 033
001
064 048 032
000
116 100 084
114 098 082
117 101 085
113 097 081
096
080
148 132
144 147 131
145 146 130
Normal end
Error
1 0 4
1 0 4
E-----
XXXX
XXXX
Added key code
Added key code
105
#/TM/ST
1 0 5
X
Mode:
x :
PGM
OFF
OP X/Z
SRV
0
( )
1
2
(9)
3
X2/Z2
MGR
REG
SRV
0
X1/Z1
7
6
5
4
*
1
*
2
Normal end
Error
1 0 5
1 0 5
E-----
106
#/TM/ST
1 0 6
X
1 0 6
110
#/TM/ST
2) Functional description
State of the drawer open sensor is sensed and displayed.
3) Check items
X
Description
O
Drawer open sensor detected. (Drawer opend)
C
Drawer open sensor not detected. (Drawer closed)
The ER-A220 is not provided with the open sensor and thus the
letter "C" stays on the display.
letter "C" stays on the display.
a) Check opening of the specified drawer.
4) Test termination
Press any key. The test terminates with the test and message printed
[8] External RAM test
1) Key operation
2) Functional description
Perform the following check for the external RAM 128 KByte SRAM.
Perform the following processes for memory address to be checked
(080000H~27FFFH).
PASS1 : Save memory data.
PASS2 : Write data "00H."
PASS3 : Read and compare data "00H," write data "55H."
PASS4 : Read and compare data "55H," write data "AAH."
PASS5 : Read and compare data "AAH."
PASS6 : Restore the memory data.
If a compare error occurs in the check sequence PASS1-PASS6, an
error print is made. If no error occurs through all address, the check
error print is made. If no error occurs through all address, the check
ends normally.
The following address check is performed further.
Check point address =
10000H , 10001H , 10002H , 10004H , 10008H
10010H , 10020H , 10040H , 10080H ,
10100H , 10200H , 10400H , 10800H ,
10100H , 10200H , 10400H , 10800H ,
11000H , 12000H , 14000H , 18000H ,
20000H
3) Check the following items:
Check the termination printout.
4) Test termination
The test terminates after printing the termination printout.
Termination printout:
Normal termination
120
Abnormal termination
Ex – – – – –
120
X = 1: Data check error
2: Address check error
Note: When an error occurs, the error print is performed and the
check is terminated. The error occurrence address is shown in
hexadecimal at positions shown with
hexadecimal at positions shown with
.
[9] CPU internal RAM test
1) Key operation
2) Functional description
Perform the following check for the CPU internal RAM 20 KByte.
Perform the following processes for memory address to be checked
(00400H~053FFH).
PASS1 : Save memory data.
PASS2 : Write data "00H."
PASS3 : Read and compare data "00H," write data "55H."
PASS4 : Read and compare data "55H," write data "AAH."
PASS5 : Read and compare data "AAH."
PASS6 : Restore the memory data.
If a compare error occurs in the check sequence PASS1-PASS6, an
error print is made. If no error occurs through all address, the check
error print is made. If no error occurs through all address, the check
ends normally. The following address check is performed further.
Check point address =
01000H , 01001H , 01002H , 01004H , 01008H
01010H , 01020H , 01040H , 01080H ,
01100H , 01200H , 01400H , 01800H ,
01100H , 01200H , 01400H , 01800H ,
02000H , 04000HE
3) Check the following items :
Check the termination printout.
4) Test termination
The test terminates after printing the termination printout.
Termination printout:
Normal termination
121
Abnormal termination
Ex – – – –
121
X = 1: Data check error
2: Address check error
Note : When an error occurs, the error print is performed and the
check is terminated. The error occurrence address is shown in
hexadecimal at positions shown with
hexadecimal at positions shown with
.
[10] External ROM (IPL) test
1) Key operation
1 1 0
X
1 1 0
120
#/TM/ST
121
#/TM/ST
130
#/TM/ST
2) Functional description
Sum check of the external ROM for IPL (40000H - 7FFFFH) is per-
formed. If the lower two digits of SUM is 10H, it is normal.
3) Check the following items:
Check the printout after the test.
4) Test termination
The test automatically terminates with termination message.
Normal termination print
130
ROM
27020
Error termination print
E – – – –
130
ROM
27020
Note: "
" means the ROM version number.
[11] CPU internal FLASH ROM test
1) Key operation
2) Functional description
Sum check of the ROM (C0000H - FFFFFH) is performed. If the lower
two digits of SUM is 10H, it is normal.
two digits of SUM is 10H, it is normal.
3) Check the following items:
Check the printout after the test.
4) Test termination
The test automatically terminates with termination message.
Normal termination print
140
ROM
27020
Error termination print
E – – – –
130
ROM
27020
Note : "
" means the ROM version number.
[12] RS-232 loop back test
Connect the loop back connector(UKOG-6705RCZZ) to RS232 con-
nector.
nector.
1) Key operation
2) Functional description
Control signal check
OUT PUT
INPUT
/ER
/RS
/DR
/CI
/CD
/CS
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
OFF
OFF
ON
ON
ON
OFF
ON
ON
OFF
OFF
ON
ON
ON
ON
ON
ON
Data communication check
Perform 256-byte branch loop back test between SD and RD.
DATA : $00 - $FF
BAUD RATE : 9600 BPS
Display :
3) Test termination
This check is terminated automatically.
The test terminates with the test and message printed
The test terminates with the test and message printed
XX: Error code
Description
01
ER-DR error
02
ER-CI error
03
RS-CD error
04
RS-CS error
05
SD-RD error (DATA error)
06
SD-RD error (DATA error/Flaming error)
[13] SLEEP MODE test
1) Key operation
2) Functional description
Check the state of SLEEP MODE (Numeric of display: OFF/Decimal
point of display: ON)
point of display: ON)
And waiting for cancel of SLEEP MODE (Input the any key, Input the
signal of RS232 port)
3) Check item
a) Check the state of SLEEP MODE: Numeric of display:
OFF/Decimal point of display: ON
b) Cancel of SLEEP MODE by input the any key.
4) Test termination
This check is terminated automatically.
The test terminates with the test and message printed
1
0
7-SEGMENT DISPLAY:
3
140
#/TM/ST
500
#/TM/ST
5 0 0
Normal end
Error
NG
RS TEST
ER XX
RS TEST
OK
550
#/TM/ST
5 5 0
CHAPTER 6. DOWN LOAD FUNCTION
1. General
RAM data can be transmitted in the following two methods.
Save the data before servicing as follows:
ECR
ECR
Cable : 9 pin D-SUB – 9 pin D-SUB
Fig. 1-1
ECR
ER-02FD
Cable : 9 pin D-SUB – 25 pin D-SUB
Fig. 1-2
2. SIO interface specification
1) Operation:
Simplex
2) Line configuration:
Direct connect
3) Data rate:
19200/9600(by programming)
4) Sync mode:
Asynchronous
5) Checking:
Vertical parity (odd)
6) Code:
7 bits (ASCII)
7) Bit sequence:
LSB first
8) Line level:
RS232 level
9) Data forma:
FIg. 2-1
3. Location of connector pins
ECR-ECR cable
Fig. 3-1
ECR
ECR
ECR
ER-02FD
P
b1
b2
b3
b4
b5
b6
b7
LSB
MSB
Start bit
Parity
bit
Stop
bit
SD
3
SD
RD
CTS
RD
2
6
8
3
2
6
8
5
5
SG
RTS
7
DCD
1
DTR
4
DSR
7
1
4
ECR
CTS
SG
RTS
DCD
DTR
DSR
9PIN D-SUB
9PIN D-SUB
SD : TRANSMITTED DATA
RD : RECEIVED DATA
DTR: DATA TERMINAL READY
DSR: DATA SET READY
RTS: REQUEST TO SEND
DCD: DATA CARRIER DETECTOR
CTS: CLEAR TO SEND
RD : RECEIVED DATA
DTR: DATA TERMINAL READY
DSR: DATA SET READY
RTS: REQUEST TO SEND
DCD: DATA CARRIER DETECTOR
CTS: CLEAR TO SEND
ECR
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