Casio Cassiopeia A-10 Troubleshooting guide

Handheld Personal Computer
A-10/A-11(ZX-305/314)
R
MAR. 1997
(without price)
A-11

CONTENTS
HARDWARE SPECIFICATIONS -------------------------------------------------------------- 1
General Specifications------------------------------------------------------------------- 1
Electrical Specifications----------------------------------------------------------------- 1
UNPACKING ---------------------------------------------------------------------------------------- 3
OPTIONS--------------------------------------------------------------------------------------------- 3
GENERAL GUIDE --------------------------------------------------------------------------------- 5
DESKTOP COMPUTER SYSTEM CONFIGURATION ---------------------------------- 7
SETTING UP ---------------------------------------------------------------------------------------- 7
REPLACING BATTERIES----------------------------------------------------------------------- 8
Replacing the Main Batteries ---------------------------------------------------------- 8
Replacing the Back-up Battery------------------------------------------------------ 10
Optional Battery Pack------------------------------------------------------------------ 10
RESETTING THE A-10/A-11 ----------------------------------------------------------------- 11
To reset the A-10/A-11 ----------------------------------------------------------------- 11
CONNECTING THE A-10/A-11 TO A DESKTOP COMPUTER --------------------- 12
CONNECTING TO EXTERNAL EQUIPMENT ------------------------------------------- 12
REPLACING MEMORY SLOT --------------------------------------------------------------- 13
MEMORY BACKUP/RESTORE-------------------------------------------------------------- 15
Backup -------------------------------------------------------------------------------------- 15
Restore -------------------------------------------------------------------------------------- 17
BLOCK DIAGRAM ------------------------------------------------------------------------------ 19
DEVICE FEATURES ---------------------------------------------------------------------------- 20
LSI/IC DATA -------------------------------------------------------------------------------------- 22
MB87A908A (SYSTEM LSI / U3)----------------------------------------------------- 22
MBCG25942-5110 (GATE ARRAY / U4)------------------------------------------- 25
HD6417096: SH3 (CPU / U1)---------------------------------------------------------- 27
MC34119 (U5) ----------------------------------------------------------------------------- 29
MAX3241CAI (U6) ------------------------------------------------------------------------ 29
UPD42S16165LG5 ----------------------------------------------------------------------- 30
RN5VD18CA (U9)------------------------------------------------------------------------- 30
XC61A or RH5V Series (U12 ~ 17, U32)------------------------------------------- 31
TFDS3000TR3: IrDA Module (U18) ------------------------------------------------- 31
MAX608 (U20, U22) ---------------------------------------------------------------------- 31
RN5RY Series (U23)--------------------------------------------------------------------- 32
RN5RG Series (U26) -------------------------------------------------------------------- 32
LA5312V (U601) -------------------------------------------------------------------------- 32
HV803 (IC801) ----------------------------------------------------------------------------- 33
UPD23C32000LGY----------------------------------------------------------------------- 33
EMI FILTER ARRAY --------------------------------------------------------------------- 33
POWER SUPPLY CIRCUIT ------------------------------------------------------------------- 34
Primary Circuit---------------------------------------------------------------------------- 34

5 V Circuit ---------------------------------------------------------------------------------- 35
3 V Circuit ---------------------------------------------------------------------------------- 36
25 V Circuit--------------------------------------------------------------------------------- 37
Voltage Line ------------------------------------------------------------------------------- 37
DETECTOR CIRCUIT--------------------------------------------------------------------------- 38
DIAGNOSTIC PROGRAM--------------------------------------------------------------------- 39
Introduction-------------------------------------------------------------------------------- 39
Boot ------------------------------------------------------------------------------------------ 40
IrDA Communication Test ------------------------------------------------------------ 46
Current Consumption and Voltage Detectors Check------------------------ 48
Voltage Detectors Check-------------------------------------------------------------- 50
Finishing------------------------------------------------------------------------------------ 52
DISASSEMBLY ---------------------------------------------------------------------------------- 54
Memory Slot ------------------------------------------------------------------------------- 54
Lower Case B Ass’y -------------------------------------------------------------------- 55
Z305-1 PCB Ass’y------------------------------------------------------------------------ 56
Upper Case B Ass'y (Keyboard Unit) --------------------------------------------- 57
LCD Module and Touch Panel------------------------------------------------------- 58
WIRING DIAGRAM------------------------------------------------------------------------------ 60
PCB VIEW ----------------------------------------------------------------------------------------- 61
Z305-1 PCB (1/2) ------------------------------------------------------------------------- 61
Z305-1 PCB (2/2) ------------------------------------------------------------------------- 62
SCHEMATIC DIAGRAMS --------------------------------------------------------------------- 63
Z305-1 PCB 1/7 (CPU, SYSTEM LSI)----------------------------------------------- 63
Z305-1 PCB 2/7 (POMCIA CARD I/F)----------------------------------------------- 64
Z305-1 PCB 3/7 (MEMORY) ----------------------------------------------------------- 65
Z305-1 PCB 4/7 (AUDIO, TOUCH PANEL) --------------------------------------- 66
Z305-1 PCB 5/7 (RS232C, IrDA, 3-PIN)-------------------------------------------- 67
Z305-1 PCB 6/7 (POWER SUPPLY) ------------------------------------------------ 68
Z305-1 PCB 7/7 (DETECTOR) -------------------------------------------------------- 69
Z305-S1 PCB (EL)------------------------------------------------------------------------ 70
Z305-LD PCB (LCD POWER) --------------------------------------------------------- 71
Z305-KY PCB (KEYBOARD) ---------------------------------------------------------- 72
Z305-MMR PCB (MEMORY SLOT)-------------------------------------------------- 73
EXPLODED VIEW AND PARTS LIST ----------------------------------------------------- 74
COMPONENT------------------------------------------------------------------------------ 74
UPPER CASE B ASS’Y----------------------------------------------------------------- 76
Z305-1 PCB ASS’Y----------------------------------------------------------------------- 78
LOWER CASE B ASS’Y ---------------------------------------------------------------- 78
DISPLAY UNIT ---------------------------------------------------------------------------- 82
* Windows is a registered trademark of Microsoft Corporation in the U.S.A. and other countries.
* i486DX and Pentium are registered trademarks of Intel Corporation.

— 1 —
HARDWARE SPECIFICATIONS
General Specifications
Model: A-10/A-11
Display: 480 ×240 dots/0.24 dot pitch, FSTN LCD, 4 grayscale monochrome
CPU: SH3
Memory RAM: (A-10) 2 Mbytes, (A-11) 4 Mbytes
ROM: 4 Mbytes
Speaker: Sound
Interfaces: RS-232C: 115.2 kBPS
Data communication jack
PC card slot
Infrared port (IrDA Standard)
Power Supply: MainTwo AA-size alkaline batteries LR6 (AM3);rechargeable battery pack(NH-10);
AC adaptor (AD-C50150)
Back-up
One CR2032 lithium battery
Power Consumption: 3.8 W
Battery Life: MainTwo AA-size alkaline batteries:20 hours (in Word, continuous cycle of one-
minute input and 10-minutes input standby)
Rechargeable battery pack:14 hours (in Word, continuous cycle of one-minute
input and 10-minutes input standby)
* Main Battery life is shortened considerably by use of a modem card or any
other high power consumption PC card.
Back-up
5 year (when main battery is replaced immediately after appearance of low
battery message)
1 month (when unit is left without a main battery)
Operating Temperature: 0 °C to 40 °C (32 °F to 104 °F)
Dimensions (excluding projections):
Unfolded: 15.0H ×175.0W ×175.0D mm (5/8"H ×6-7/8"W ×6-7/8"D)
Folded: 26.5H ×175.0W ×92.0D mm (1"H ×6-7/8"W ×3-5/8"D)
Weight: 380 g (13.4 oz) including batteries
Electrical Specifications
Current Consumption (V-in: 2.6 V ±0.02 V, LCD Contrast VR: Max.):
Main Battery: Diagnostics Program (Power Control. Refer to page 37)
40 MHz: 210 mA or under
Sleep: 67 mA or under
Standby: (A-10) 0.8 mA or under
(A-11) 1.0 mA or under
Welcome Wizard (Normal Operation)
ON: 82 mA or under
OFF: (A-10) 0.8 mA or under
(A-11) 1.0 mA or under

— 2 —
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1mc001=L=A±eerged51
2mc5=Leerged0=A
Back-up Battery: OFF: (A-10) 30 ~ 150 µA
(A-11) 50 ~ 250 µA
Voltage Detectors:
VDET1: 2.0 ±0.04 V or under (Low battery message detector for alkaline batteries)
VDET2: 1.6 ±0.04 V or under (Foced power off detector for alkaline batteries)
VDET1R: 2.3 ±0.03 V or under (Low battery message detector for rechargeable battery)
VDET2R: 1.9 ±0.02 V or under (Foced power off detector for rechargeable battery)
VDETS: 2.7 ±0.03 V or under (Low battery message detector for back-up battery)
IrDA:
A
L
A-10/11
A-10/11

— 3 —
UNPACKING
The stylus is inserted into the A-10/A-11 unit.
• A-10/A-11 Unit • Stylus • Dummy Card • RS-232C Cable
The dummy card is inserted in the A-10/A-11 unit.
• CD-ROM (two) • Manuals (Hardware Manual, User’s Guide)
The CD-ROM contains an installer, software applications, and software application documentation.
• AA-size Alkaline Batteries (two)
OPTIONS
UT-S11
This set includes an AC adapter, charger, rechargeable battery pack, and CR-A10.Slip the A-10/A-11 into
the CR-A10 for quick and easy exchange of data with a desktop computer. Also, the CR-A10 makes it
possible to use the RS-232C cable and the Charger at the same time.
AC-S10
This set includes an AC Adapter and CR-M10. The CR-M10 makes it possible to use the RS-232C cable
and the AC Adapter at the same time.
AC Adapter Charger Rechargeable Battery Pack CR-A10
AC Adapter CR-M10

— 4 —
Data Communication Cable SB-62
This cable is used to connect a digital camera or other external
equipment to the A-10/A-11.
CR-A10 CR-M10
CH-50150A NH-10A
Charger Rechargeable Battery Pack

— 5 —
Open: Pressing the latch causes the two
panels to separate slightly, so you can
open them up further by hand.
Close: Press the two panels together until
the latch locks with a click.
To remove: Pull on the part of the stylus
that protrudes from the unit.
To replace: Taking care to orient the stylus
correctly, press it until it clicks into place.
ON OFF
GENERAL GUIDE
• Keyboard
• Power switch
Press to turn power
on and off.
• Touch screen
Displays text data and operational indicators, as well
as on-screen keys and icons that can be operated
using the stylus.
• Reset button
• Backlight button
Press to turn the backlight on and
off. The Backlight turns off auto-
matically if you do not perform any
key or stylus input operation for
some time.
• Data communication jack
For connection of a digital cam-
era or other external equip-
ment.
• Card slot (PC card)
• Stylus
For performing operations on the touch screen.
Take care to avoid damaging or losing the stylus.
• Panel latch
Press to open the panels.
• Main battery holder
Holds main power supply batteries.
• Battery holder release
Slide to release the battery holder when re-
moving it from the A-10/A-11. Both buttons
must be returned to the “NORMAL OPERA-
TION” position for the unit to operate nor-
mally.
• Back-up battery compartment
Holds back-up battery.
• Card lock
Locks a card in the card slot. Unlock
the card when removing it.
• Card eject switch
Slide to eject a card from the
card slot.

— 6 —
• Flashing light
Lights when an alarm time is reached
and to indicate other application-spe-
cific conditions.
• Speaker
Outputs alarm tones and other sounds.
• Notification Button
Turns off the flashing light and stops
the alarm.
• RS-232C/Power connector
For connection of an RS-232C cable,
docking station, mini dock or battery pack
charger.
• Infrared port
• Contrast dial
Rotate to adjust diplay
contrast. Rotate upwards
to make the display lighter
or downwards to make it
darker.

— 7 —
DESKTOP COMPUTER SYSTEM CONFIGURATION
You should check to make sure that the configuration of your desktop computer is as described below to
support the installer and the software applications contained on the CD-ROM.
Minimum Requirements:
Desktop computer with a 486/33DX or higher processor (Pentium P90 recommended)
Microsoft Windows 95 (U.S. Version) or later operating system (will not run on earlier versions of Win-
dows or Windows NT)
8MB of memory (12MB recommended)
10 - 20 MB of available hard disk space (actual requirements will vary based on features you choose to
install and current system configuration)
Available 9 or 25 pin Communications Port (adapter required for 25 pin communication port)
One CD-ROM drive (3.5" high-density disks provided on request)*
VGA or higher resolution graphics card (SVGA 256-color recommended)
Microsoft Mouse or compatible pointing device
Options:
Audio card/speakers for sound
SETTING UP
Use the following procedure to set up the A-10/A-11 before using it for the first time.
1. Load batteries.
Load the two alkaline batteries that come with the A-10/A-11 into its main battery holder.
After loading the main batteries, pull the insulating tape out from under the back-up battery compartment
cover.
2. Turn on power.
Press the power switch to turn on power.
3. Set up the A-10/A-11.
The welcome wizard appears on the screen after the reset routine is complete. Perform the following
procedures in accordance with the guidance messages that appear on the screen.
Touch screen calibration
Time and date setting
Personal data input
Other settings

— 8 —
REPLACING BATTERIES
The A-10/A-11 has a dual power supply that consists of main batteries and a back-up battery. Be sure to
load the main batteries before using the A-10/A-11 for the first time after purchasing it. Also, replace batter-
ies as soon as possible after they start to lose power.
Important!
• Never remove both the main batteries and the back-up battery from the A-10/A-11 at the same time. If
you do, data stored in memory can be corrupted or lost entirely.
• Use two AA-size alkaline batteries or the optional rechargeable battery pack for the main power supply
and a CR2032 lithium battery for the back-up power supply. Never use any other types of batteries with
the A-10/A-11.
• Be sure to keep track of the battery life of both the main batteries and the back-up battery. If the batteries
being used for both power supplies are low at the same time, data stored in memory can be corrupted or
lost entirely.
Replacing the Main Batteries
1. Make sure the A-10/A-11 is turned off.
If the A-10/A-11 is on, press the power switch to turn it off.
2. Close the A-10/A-11 and turn it over.
3. Slide and hold the battery holder release towards “REPLACE BATTERIES” and then carefully slide the
main battery compartment from the A-10/A-11.
Note that the main battery holder release actually consists of two separate buttons. Slide and hold both
of them towards “REPLACE BATTERIES”.
Grasp the center of the main battery holder when you slide it from the A-10/A-11.

— 9 —
4. Remove both of the old batteries from the main battery holder, and load two new ones.
When loading new batteries, make sure that their positive (+) and negative (–) ends are facing correctly.
5. Insert the main battery holder into the A-10/A-11 until the holder is fully seated.
1
2
6. Slide the release (both buttons) of the main battery holder towards “NORMAL OPERATION” to lock the
main battery holder release.
7. If you are loading batteries into the A-10/A-11 for the first time after purchasing it, pull the insulating tape
out from under the back-up battery compartment cover according to the following order.

— 10 —
Replacing the Back-up Battery
Important!
• Never remove both the main batteries and the back-up battery from the A-10/A-11 at the same time. If
you do, data stored in memory can be corrupted or lost entirely.
A back-up battery comes installed in the A-10/A-11 when you purchase it. Be sure to replace the back-up
battery as soon as possible after it shows signs of low power.
1. Make sure the A-10/A-11 is turned off.
If the A-10/A-11 is on, press the power switch to turn it off.
2. Close the A-10/A-11 and turn it over.
3. Remove screw A and then remove the back-up battery compartment cover.
Optional Battery Pack
Main power can also be supplied to the A-10/A-11 using a rechargeable battery pack that is available as an
option. Charging of the optional battery pack is performed using an optional charger.
4. Remove the old battery.
5. Wipe the surfaces of the new battery with a soft cloth, and then load it into the back-up battery compart-
ment with the + side facing up (so you can see it).
6. Replace the back-up battery compartment cover and secure it in place with its screw.
Important!
Battery Precautions
Improper handling of batteries create the danger of fire or personal injury, as well as damage to and
malfunction of the A-10/A-11. Be sure to observe the following important precautions.
• Always make sure the polarity (+ and – directions) of a battery is correct when you load it into the A-10/
A-11.
• Never mix old batteries with new ones.
• Never mix batteries of different types.
• Use only the types of batteries specified in this manual.
(A)

— 11 —
RESET
RESETTING THE A-10/A-11
You should reset the A-10/A-11 whenever you suspect some external abnormality has caused it to mal-
function.
Normal Reset
Performing the reset operation when the A-10/A-11 is hung up or experiencing other operational problems
but no corruption of memory contents resets the A-10/A-11 without affecting memory contents or settings.
A normal reset causes the Desktop to appear on the screen.
Memory Reset
Performing the reset operation after memory data has been corrupted clears memory contents and set-
tings, and causes the welcome wizard screen to appear. Set up the A-10/A-11 in accordance with the on-
screen guidance.
To reset the A-10/A-11
1. Press the power switch to turn on the A-10/A-11.
2. Use the stylus to press the reset button.
This causes the A-10/A-11 to turn off.
Important!
• Always use the stylus that comes with the A-10/A-11 whenever performing any touch screen operation.
Using any other object can result in damage to and malfunction of the A-10/A-11.
3. Turn the A-10/A-11 back on to resume the reset operation.

— 12 —
CONNECTING THE A-10/A-11 TO A DESKTOP COMPUTER
Use the following procedure to connect the A-10/A-11 to a desktop computer.
Requirements
Installation CD-ROM (supplied with A-10/A-11)
RS-232C cable (supplied with A-10/A-11)
Desktop computer (see page 6 for minimum requirements)
1. Open the RS-232C connector cover of the A-10/A-11.
Pull out the bottom of the cover and swing it up. Next slide the cover into the side of the A-10/A-11.
CONNECTING TO EXTERNAL EQUIPMENT
You can connect the A-10/A-11 to a digital camera or other external equipment and exchange data.
Requirements
Optional data communication cable (SB-62)
To connect to external equipment, complete the following steps.
1. Turn off the A-10/A-11 and the external equipment.
2. Connect the data communication cable to the A-10/A-11’s data communication jack and the external
equipment.
2. Use the RS-232C cable to connect the A-10/A-11 to your desktop computer.
The RS-232C cable has a 16-pin connector on one end for connection to the A-10/A-11, and a 9-pin
connector on the other end for connection to your desktop computer.

— 13 —
«
REPLACING MEMORY SLOT
The memory slot of A-10/A-11 carries system ROM. When you replace it, the following steps must be
followed.
Note: Be sure to remove main and back-up batteries first and then replace the memory slot.
Replacement of the memory slot remaining batteries makes the electrical parts inside A-10/
A-11 be defective.
1. Make sure the A-10/A-11 is turned off.
2. Remove the main batteries according to the chapter “REPLACING THE BATTERIES”.
3. Remove the back-up batteries according to the chapter “REPLACING THE BATTERIES”.
4. Remove a screw and then remove the memory slot cover.
5. Put the slot guide to outside, the memory slot goes up. Then remove the memory slot and insert new
one.
«

— 14 —
6. Replace the memory slot cover and secure it in place with its screw.
7. Insert the main battery holder into the A-10/A-11 until the holder is fully seated. And slide the release
(both buttons) of the main battery holder towards “NORMAL OPERATION” to lock the main battery
holder release.
8. Press ON button and confirm the Welcome wizard appears.
9. Press OFF button.
10. Load the backup battery and replace the backup battery compartment cover and secure it in place with
its screw.
«

— 15 —
MEMORY BACKUP / RESTORE
Make the backup copy by HPC Explorer to your PC before repairing A-10/A-11, and restore the data from
PC to user’s A-10/A-11 after repairing.
For the details of Backup/Restore, refer to the operation manual of HPC Explorer.
Notes: 1* Backup program of HPC Explorer back up only files and databases. Setup data including
Owner, World Clock and so on, can not be backed up to PC.
2* Use AC adaptor when making backup copy and restoring.
Backup
1. Connect user’s A-10/A-11 to your PC with RS-232C cable.
2. Start HPC Explorer on your PC.
3. HPC Explorer detects A-10/A-11 is connected automatically.
4. PC shows the following dialog and click “Guest”.
5. Click “Tool” menu and “Backup/Restore...”.

— 16 —
6. Click “Full: back up all files” and “Back Up Now”.
7. Confirm the file name of bakup copy and then click “OK”. Backup starts.

— 17 —
Restore
Execute Restore after repairing.
1. Turn on the user’s A-10/A-11 and then Welcome wizard appears.
2. Execute touch panel calibration and then skip other setups after calibration.
3. Connect repaired A-10/A-11 to your PC with RS-232C cable.
4. Start HPC Explorer on your PC.
5. Click “Restore” and confirm the file name backuped. Then click “OK”.
6. Click “Restore”.