Also See for MZ1F10
User manual
- 12 pages
Advertisement
-
M Z-5600A
(4) Write Input/Output
1) Write Clock and N RZ Input Data
14
FC
0
2F
C
Write Clock
2) MFM Data
OWMD
Data Bit
Clock Bit
DWD Output (1)
Write
M in8n
: : s
M
in
4
n
s
Precompensation
Data
··
..................
.... .........
Precompensation Mode
*Early
Data
*Normal
Data
*Late
Data
*
Early
,
Normal, Late- Same with Clock Bit
DWD Output 2
. .
.
.
. . .
.
Precompensation Mode at EXT
IPED
IPND
- - - . .
JI
!PLO
ODWD
6. MAINTENANCE
(Trouble-ihooting)
6-1. Genral
Trouble analysis of the NDC5801 Hard Disk Controller is
described, sequence by sequence.
6-2. Tools
The tools necessary for trouble analysis are the following
.
(1) Host system (MZ-6500)
(2) Troubled 5" Disk and NDC5801 controller
(3) Oscilloscope
(4) Test program
6-3. Structure
I
r---
HOST
r------
SYSTEM
1/F
CONTROLLER
6" D l S K
MZ6500
I
DC
6-4-2. Self-Diagnostic Function
This function works with the power on. A judgement of
good or bad is shown with the SELECT LAMP of the drive
and the LED of this controller.
(1) SELECT LAMP
The normal action of this lamp after the power is
turned on is to light in twenty seconds then immediate·
ly go off. Abnormal cases include the following.
•
If the spindle motor of the dirve does not
rotate,
the drive is bad or the power system of the drive is
bad.
•
llf the lamp does not light after the controller is
exchanged, the drive or the cable between the dirve
and controller is bad. If the lamp lights, the Drive
Select of the controller
is
bad.
(2) LED
If the red LED remains lighted after the power is
turned on, the Dirve Select of the controller is bad.
If the red LED finally lights though the green LED
lighted up once, change the controller and recheck
.
After the exchange, if the green LED lights, this indica-
tes that the controller is bad. If the status remains the
same, then the drive or the periphery is bad
.
-
12
-
Advertisement
Also See for Sharp MZ1F10
Sharp MZ-1F10 User Manual
12 pages
Related Manuals for Sharp MZ1F10
-
Computer Hardware Sharp MZ-1R12 Service Manual
S-ram board (for mz-700) (8 pages)
-
Computer Hardware Sharp MZ-1F19 Instruction Manual
Mini-floppy disc drive (15 pages)
-
Computer Hardware Sharp MZ-8BI03 Service Manual
Interface card (31 pages)
-
Computer Hardware Sharp MZ-80FD(K) Instruction Manual
Floppy disk drive (12 pages)
-
Computer Hardware Sharp MZ-80FD(K) Instruction Manual
Floppy disk (12 pages)
-
Computer Hardware Sharp MZ-801/0 Instruction Manual
Interface unit (12 pages)
-
Computer Hardware Sharp CE-E Service Manual
Parallel and pocket disk interface (17 pages)
-
Computer Hardware Sharp JW-20FL5 User Manual
Fl-net module (board) (224 pages)
-
Computer Hardware Sharp AN-WC11B Operation Manual
Wireless lan pc card for windows (36 pages)
-
Computer Hardware Sharp PN-ZB01 Installation Manual
Installation manual (4 pages)
-
Computer Hardware Sharp CE-340R Service Manual
Rs-232c serial interface (54 pages)