Error Content; Error Information Storing Area Description; Fan & Lcd On/Off Diagnostics; Fan & Lcd On/Off Check - Sharp UP-5700 Service Manual

15) Error content

The following error content is error information directly obtained from
the HDD controller.
[Error code and meaning]
Error code
OK (This message is displayed when the test is
0
normally completed.)
Drive not ready (HDD is not ready. STATUS REG
1
bit 6 : 0)
Bad controller (HDD controller abnormality, diag
2 status error STATUS REG bits : 1 or DIAG STATUS
>= 2)
Track 000 Error (TRACK 000 cannot be found with
3
RESTORE command. ERROR REG bit 1 : 1)
Seek Error (A seek error occurs. After STATUS
4
COMMAND is executed, STATUS REG bit 4 : 0)
ID not Found (ID field is not detected. ERROR REG
5
bit 4 : 0)
Data Address Mark not Found (Data Address Mark
6
is not found. ERROR REG bit 0 : 1)
Bad Block Detect (BAD block mark is stored in the
7
ID field of request sector. ERROR REG bit 7 : 1)
Uncorrectable error (An uncorrectable read error
8
occurs. ERROR REG bit 6 : 1)
Others error (The other error STATUS REG bit 0 : 1,
9
and ERROR REG : 0)
Time out error (Time out occurs when making
10
access to HDD.)
Compare error (The written data and the read data
11
are not the same.)
16) Error information storing area
Error information storing area for diagnostics
1 sector 6 sector of 0 head of the last cylinder is used.
Used in the following format from the head of each sector.
(Error information format for every sector)
1 46 11 = 507byte is used in one sector.
Last cylinder
Head of 0 head, 1 sector
2nd sector - 6th sector are the same.
Counter
[1byte 0~46]
BIN
Error Cylinder
Head Sector
code (L) (H)
BIN BIN BIN BIN BIN
Error message
Year Month Day Hour Minute Second
BCD BCD BCD BCD BCD BCD
3-18. Fan & LCD ON/OFF Diagnostics
1) Fan & LCD ON/OFF Check
Check content
The CPU, the fan, the exhaust fan and the LCD are turned
ON/OFF.
When this menu is selected, the following display is shown.
FAN&LCD ON/OFF Diagnostics
HIT ANY KEY
When any key is pressed, "1" is written to bit 4 of PSC2 general
use I/O port HIOP At that time, the CPU fan and the exhaust fan
are stopped and the LCD and the backlight are turned off.
When any key is pressed under this state, if there is no key input
for 10 sec, the display automatically returns to the main menu.
When resetting, "0" is written to HIOP bit 4.
3-19. Power Hold Diagnastics

1) Power Hold Check

Check content
Two types of states such as power hold and power switch are
displayed.

Power Hold Diagnostics

Power Hold
Power Switch : ON (or OFF)
When pressing the space key, bit 5 of PSC2's general I/O port
HIOP is inverted, and power hold is switched between ON and
OFF.
In addition, bit 1 of PSC2's general port HIOP is read at every
200ms. Power Switch: OFF is displayed when this bit is "0", and
Power Switch: ON is displayed when this bit is "1".
4 – 21
: ON (or OFF)