Sharp ER-A280 / ER-A280N / ER-A280F (serv.man5) Service Manual ▷ View online
ER-A280F/A280N (V)
DIAGNOSTIC PROGRAM
5 – 3
5)
LED&BUZZ
The LED display and the buzzer are checked.
• LCD
The following display modes are repeated.
1.
Segment display (all digits)
The segments are lighted one by one sequentially. A short buzzer
sound is generated in every 200ms, and the next segment is auto-
matically lighted.
matically lighted.
• LED
2.
Shift display
The display is lighted in the following pattern. A short buzzer sound is
generated in every 200ms, and the next pattern is displayed. At the end,
all the segments are lighted and the buzzer keeps sounding.
all the segments are lighted and the buzzer keeps sounding.
3.
When the result is OK, press TL key to terminate the operation.
When the result is NG, press a key other than TL key to terminate
the operation.
• LED
• PRINT
6)
LCD
The following display is made. To select a menu, follow the same proce-
dures as the other menus.
When EXIT is selected, the display returns to the main menu.
• LCD
■ BRIGHTNESS&CONTRAST
1. Select a menu with
24 keys and press TL key.
2. Select EXIT and press TL key to terminate normally.
3. When any key other than TL key and
24 keys is pressed with EXIT
selected, the operation is terminated as NG.
• LCD at termination
• PRINT
■ PATTERN DISPLAY
1. The following pattern is displayed for 2 sec repeatedly.
2. When TL key is pressed, the display is stopped. When any key is
pressed, the display is shifted again.
On the final screen:
3. When TL key is pressed, the operation is terminated normally.
When any key other than TL key is pressed, the operation is termi-
nated as NG.
nated as NG.
If no key is pressed for 2 sec, the display returns to the original pat-
tern (all white), and display repetition is performed again.
LED&BUZZ
TL KEY:OK OTHER KEY:NG
LED&BUZZ
OK/NG
LCD
3 EXIT
1
BRIGHTNESS&CONTRAST
2 PATTERN DSIPLAY
0123456789ABCDEFGHIJKLMN
OPQRSTUVWXYZ0123456789AB
OPQRSTUVWXYZ0123456789AB
CDEFGHIJKLMNOPQRSTUVWXYZ
0123456789ABCDEFGHIJKLMN
LCD BRIGHTNESS&CONTRAST
1
BRIGHTNESS
XX
2 PWM FREQ XXX
3 CONTRAST
3 CONTRAST
CTXX
4 EXIT TL KEY:OK OTHER :NG
LCD BRIGHTNESS&CONTRAST
1 BRIGHTNESS XX
2 PWM FREQ XXX
3 CONTRAST CTXX
2 PWM FREQ XXX
3 CONTRAST CTXX
ER-A280F/A280N (V)
DIAGNOSTIC PROGRAM
5 – 4
• LCD
<ALL WHITE>
<OUTER FRAME 1DOT BLACK BOX DISPLAY>
<ALL BLACK>
<GRAY DISPLAY>
<H DISPLAY>
<REVERSED H DISPLAY>
<GRID DISPLAY>
<END DISPLAY>
• PRINT
7)
A/D
1. A/D input state is checked.
2. When TL key is pressed, the operation is terminated normally.
When any key other than TL key is pressed, the operation is termi-
nated as NG.
nated as NG.
*) When executing this diag, set BAT_AD to “H”.
After completion of the diag, set to “L”.
• LCD
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LCD PATTERN DISPLAY
TL KEY:OK OTHER KEY:NG
PATTERN DISPLAY OK/NG
A/D
HEAD TEMP. XXX
HEAD VOLTAGE XXXV
BAKUP BATTERY XXXV
VREF XXXV
BAKUP BATTERY XXXV
VREF XXXV
TL KEY:OK OTHER KEY:NG
ER-A280F/A280N (V)
DIAGNOSTIC PROGRAM
5 – 5
• PRINT
8)
CLOCK
1) Date and time are displayed and printed.
When TL key is pressed, the operation is terminated normally.
When any key other than TL key is pressed, the operation is termi-
nated as NG.
When “0” key is pressed, all of day, month, year, hour, minute, and
When “0” key is pressed, all of day, month, year, hour, minute, and
second are reset.
• LCD
• PRINT
9)
DRAWER
The drawer of the selected channel is opened.
1.
Select a highlighted item with “
2” and “4” keys.
2.
Wit “CH1” selected, when TL key is pressed, the drawer CH1 is
opened.
opened.
3.
When EXIT is selected, OK/NG is judged by making the operator
select a key to be pressed.
When TL key is pressed, the operation is terminated normally.
When TL key is pressed, the operation is terminated normally.
When any key other than TL key, “
2” key, and “4” key, the operation
is terminated as NG.
When “CH2” is selected, same as above.
When “CH2” is selected, same as above.
When EXIT is selected, the operation is terminated.
• LCD
• PRINT
10) RS232 (CH1 - CH4)
The loop back test of each channel is made.
1. Select a channel with “
2” and “4” keys.
2. Press TL key to execute the test.
1 Check content
<Control signal CHECK>
(*1) Executed for CH1 only.
(*2) Executed for CH1, 2, 4 only (CH3 is not installed.)
The read check of the above input and the interruption check of
CTS, RI, and DCD are performed.
CTS, RI, and DCD are performed.
In the read check, DTR and RTS are switched in this sequence to
check the logic of DSR, RI, DCD, and CTS. If the logic differs from
that in the table, an error display is made. “ON” in the table means
that in the table, an error display is made. “ON” in the table means
Active LOW, “OFF” means “HIGH”.
In the interruption check, CTS, RI, and DCD are allowed one by
one. (MASK is canceled.)
one. (MASK is canceled.)
When no interruption is generated with each signal active, or when
an interruption is generated with each signal non-active, an error
display is displayed.
display is displayed.
The above check is performed 4 cycles.
2 Data transfer check
As check data, loop back data transfer pf 256bytes (00H - FFH) is
performed. The baud rate setting is 115.2kbps.
3 TIMER CHECK (RS232 ON BOARD TIMER)
- During execution of Check ii, no interruption must be generated.
- An interruption must be generated in 5ms after completion of
Check 2.
4 The generated error is displayed.
5 Press TL key to terminate.
• LCD
A/D
OK(NG)
XXX
͠ XXXV XXXV XXXY
H T H V
BBAT
VREF
CLOCK
XX:XX:XX
XX
/XX/XX (dd/mm/yy)
TL KEY:OK OTHER KEY:NG
Day, Month, Year)
(Hour, minute, second)
CLOCK
XX/XX/XX (dd/mm/yy) XX:XX:XX OK/NG
XX/XX/XX (dd/mm/yy) XX:XX:XX OK/NG
DRAWER
C H 1
C H 2
EXIT TLKEY:OK OTHER:NG
DRAWER CHx OK/NG
The opened drawer CH is
printed.
printed.
Output
Input
DTRn
RTSn
DSRn
RIn (*1)
DCDn (*2)
CTSn
OFF
OFF
OFF
OFF
OFF
OFF
OFF
ON
OFF
OFF
ON
ON
ON
OFF
ON
ON
OFF
OFF
ON
ON
ON
ON
ON
ON
16
NG
RS232 CHx
OK
DTR-DSR
DTR-RI
RTS-DCD
ER-A280F/A280N (V)
DIAGNOSTIC PROGRAM
5 – 6
<DISPLAY LIST>
• PRINT
3.
When EXIT is selected, the operation is terminated.
• LCD
11) PRINTER
1.
The following display and print are made. Rotate the winding motor.
2.
Press TL key to terminate normally.
Press any key other than TL key to terminate as NG.
Press any key other than TL key to terminate as NG.
• LCD
• PRINT
12) ROM
1. Check to confirm that the check sum of 70000h - FFFFFh is correct
for all the banks. If the lower two digit of the check sum is 10h, it is
OK.
OK.
2. Press TL key to terminate.
• LCD
• PRINT
13) RAM
1. Write & Verify checks are performed for all the RAM areas.
Write data are changed for each address as shown below.:
The verify check of the mapping for each RAMBANK must be exe-
cuted.
1 RAMBANK0 is set.
2 RAMBANK1 is set.
(abbreviated)
NO.
Display
NO.
Display
1
DTR-DSR
10
TXRDY
2
DTR-RI
11
TXRDY INT
3
RTS-DCD 12
RCVRDY
4
RTS-CTS
13
RCVRDY INT
5
RI INT
14
SD-RD (DATA)
6
DCD INT
15
SD-RD (FRAME)
7
CTS INT
16
TIMER
8
TXEMP 17
TIMER
INT
9
TXEMP INT
RS232 CHx OK (NG---ERROR NO.)
RS232
CH1
CH2
CH3
CH4
EXIT
PRINTER
(Display after print)
TL KEY:OK OTHER KEY:NG
ZZZZZ ------- ZZZZZ
ZZZZZ ------- ZZZZZ
ZZZZZ ------- ZZZZZ
ZZZZZ ------- ZZZZZ
ZZZZZ ------- ZZZZZ
"Z" is printed in all the digits of 6 lines.
Address
Write data
NXXXX
YNh (N: 3 - 6, Y: Bakn No. )
30000h~3FFFFh
30h write, verify
40000h~4FFFFh
40h write, verify
50000h~5FFFFh
50h write, verify
60000h~6FFFFh
60h write, verify
• Mapping check
04000h~0FFFFh
Check to conform that 30h is written.
10000h~1FFFFh
Check to conform that 40h is written.
04000h~1FFFFh
AAh write, verify
04000h~1FFFFh
55h write, verify
04000h~0FFFFh
30h write, verify
10000h~1FFFFh
40h write, verify
30000h~3FFFFh
31h write, verify
40000h~4FFFFh
41h write, verify
50000h~5FFFFh 51h
write,
verify
60000h~6FFFFh
61h write, verify
• Mapping check
04000h~0FFFFh
Check to conform that 30h is written.
10000h~1FFFFh
Check to conform that 40h is written.
04000h~1FFFFh
AAh write, verify
04000h~1FFFFh
55h write, verify
04000h~0FFFFh
30h write, verify
10000h~1FFFFh
40h write, verify
ROM Version & CHECKSUM
Version
xxxx
Checksum xxxx OK(NG)
ROM Version & CHECKSUM
Version
xxxx
Checksum
xxxx OK(NG)
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