Casio PA2500U Service Manual
(without price)
Handheld Personal Computer
PA-2500U(PX-675)
FEB. 1998
PA-2500U
R
CONTENTS
HARDWARE SPECIFICATIONS -------------------------------------------------------------- 1
General Specifications------------------------------------------------------------------- 1
Electrical Specifications-----------------------------------------------------------------2
ACCESSORIES ------------------------------------------------------------------------------------ 3
OPTIONS--------------------------------------------------------------------------------------------- 3
SYSTEM CONFIGURATION-------------------------------------------------------------------- 4
GENERAL GUIDE ---------------------------------------------------------------------------------5
ADJUSTING DISPLAY CONTRAST --------------------------------------------------------- 6
DESKTOP COMPUTER SYSTEM CONFIGURATION ---------------------------------- 7
SETTING UP ----------------------------------------------------------------------------------------7
REPLACING BATTERIES----------------------------------------------------------------------- 9
To replace the main batteries----------------------------------------------------------9
To replace the backup battery------------------------------------------------------- 10
RESET ---------------------------------------------------------------------------------------------- 11
To reset the CASSIOPEIA------------------------------------------------------------- 11
FULL RESET-------------------------------------------------------------------------------------- 12
To perform a full reset ----------------------------------------------------------------- 12
CONNECTING TO A DESKTOP COMPUTER------------------------------------------- 13
To connect to a desktop computer ------------------------------------------------ 13
REPLACING THE PC CARD ----------------------------------------------------------------- 14
To replace the PC card----------------------------------------------------------------- 14
REPLACING THE COMPACTFLASH CARD -------------------------------------------- 15
To replace the CompactFlash card ------------------------------------------------ 15
CONNECTING TO EXTERNAL EQUIPMENT ------------------------------------------- 16
To connect external equipment----------------------------------------------------- 16
MEMORY BACKUP / RESTORE ------------------------------------------------------------ 17
Backup -------------------------------------------------------------------------------------- 17
Restore-------------------------------------------------------------------------------------- 19
BLOCK DIAGRAM ------------------------------------------------------------------------------ 21
DEVICE FEATURES ---------------------------------------------------------------------------- 22
LSI/IC DATA -------------------------------------------------------------------------------------- 24
SH-7093 (CPU / IC1)--------------------------------------------------------------------- 24
MB87A915 (Gate Array/IC3) ---------------------------------------------------------- 27
MC34119 (IC9)----------------------------------------------------------------------------- 32
MAX3241CAI (IC5) ----------------------------------------------------------------------- 32
UPD42S16160LG5 ----------------------------------------------------------------------- 33
RN5VD18CA (IC113) -------------------------------------------------------------------- 33
XC61A Series (IC100 ~ IC103,IC107,IC109,IC110,IC112) -------------------- 33
MAX608 (IC105,IC106)------------------------------------------------------------------ 34
EMI FILTER ARRAY--------------------------------------------------------------------- 34
UPD23C32000LGY----------------------------------------------------------------------- 34
POWER SUPPLY CIRCUIT ------------------------------------------------------------------- 35
Primary Circuit---------------------------------------------------------------------------- 35
5 V Circuit ---------------------------------------------------------------------------------- 36
3 V Circuit ---------------------------------------------------------------------------------- 37
PCMCIA Circuit--------------------------------------------------------------------------- 38
LCD power Circuit----------------------------------------------------------------------- 39
Voltage Line ------------------------------------------------------------------------------- 40
DETECTOR CIRCUIT--------------------------------------------------------------------------- 41
DIAGNOSTIC PROGRAM--------------------------------------------------------------------- 42
Introduction-------------------------------------------------------------------------------- 42
OPERATION CHECK--------------------------------------------------------------------------- 43
IrDA Communication Test ------------------------------------------------------------ 48
Current Consumption and Voltage Detectors Check------------------------ 50
Voltage Detectors Check-------------------------------------------------------------- 52
DISASSEMBLY • ASSEMBLY --------------------------------------------------------------- 54
1.Module ------------------------------------------------------------------------------------ 54
2.Upper case ass’y ---------------------------------------------------------------------- 55
3.Removal of touch panel and LCD unit ----------------------------------------- 57
4.Precautions when installing LCD unit------------------------------------------ 60
5.Installation of shaft piece----------------------------------------------------------- 61
6.How to pass FPC through the upper case------------------------------------ 62
7.Precautions when assembling---------------------------------------------------- 63
EXPLOED VIEW --------------------------------------------------------------------------------- 65
PARTS LIST--------------------------------------------------------------------------------------- 66
WIRING DIAGRAM------------------------------------------------------------------------------ 68
PCB VIEW ----------------------------------------------------------------------------------------- 69
SCHEMATIC DIAGRAMS --------------------------------------------------------------------- 70
Z340-1 PCB 1/3 (MAIN)----------------------------------------------------------------- 70
Z340-1 PCB 2/3 (POWER SUPPLY) ------------------------------------------------ 71
Z340-1 PCB 3/3 (DP I/F BLOCK)----------------------------------------------------- 72
Z370-ROM PCB (ROM) ----------------------------------------------------------------- 73
Z340-DPMI PCB (MIC) ------------------------------------------------------------------ 74
Z340-LED PCB (LED) ------------------------------------------------------------------- 75
KEY MATRIX------------------------------------------------------------------------------- 76
* 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.
HARDWARE SPECIFICATIONS
General Specifications
Model: PA-2500U
Display: 640 × 240 dots/0.24 dot pitch, FSTN LCD, 4 grayscale monochrome
CPU: SH3
Memory RAM: 8M bytes
ROM: 8M bytes
Speaker: Sound
Interfaces: RS-232C: 115.2K BPS
Data communication jack
PC card slot
CompactFlash card slot
Infrared port (IrDA compatible protocol)
Communication distance: 10 to 70 cm
Maximum Speed: 115.2K BPS
Power Supply: Main
Two AA-size alkaline batteries LR6 (AM3);rechargeable battery pack(A-B10LT);
AC adaptor (AD-C50200)
Back-up
One CR2032 lithium battery
Power Consumption: 3.0 W
Battery Life: Main
Two AA-size alkaline batteries: 25 hours (in Word, continuous cycle of oneminute input and 10-minutes input standby), 10 hours (input of 90 characters
per minutes in Word)
Rechargeable battery pack: 15 hours (in Word, continuous cycle of one-minute
input and 10-minutes input standby), 10 hours (input of 90 characters per minutes in Word)
* 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):
Folded: 24.5H × 185W × 94D mm (1"H × 7-1/4"W × 3-11/16"D)
Weight: 430 g (15.2 oz) including batteries
— 1 —
Electrical Specifications
Current Consumption (V-in: 2.6 V ± 0.1 V, LCD Contrast VR: MID.):
Main Battery: Diagnostics Program with alkaline batteries
80 MHz: 650 mA or under
Sleep: 50 mA or under
Standby: 1.4 mA or under
Back-up Battery: OFF: 450 µA
Voltage Detectors:
VDET1: 2.0 V ± 1% V or under (Low battery message detector for alkaline batteries)
VDET2: 1.6 V ± 1% V or under (Foced power off detector for alkaline batteries)
VDET1R: 3.3 V ± 2% V or under (Low battery message detector for rechargeable battery)
VDET2R: 3.0 V ± 2% V or under (Foced power off detector for rechargeable battery)
VDETS: 2.7 V ± 1% V or under (Low battery message detector for back-up battery)
IrDA:
No. Length (L) Angle (A)
1 L = 80 cm A = ±15 degree
2 L = 10 cm A = 0 degree
PA-2500U
A
PA-2500U
L
— 2 —
ACCESSORIES
• Stylus • Dummy Card • RS-232C Cable
The stylus is inserted into the CASSIOPEIA.
• CD-ROM
• AC Adapter
*The actual configuration of the AC adapter may differ from that shown in the above illustration.
• Manuals (Hardware Manual, User’s Guide)
The dummy card is inserted in the CASSIOPEIA.
• Rechargeable Battery Pack
OPTIONS
• Cradle PA-2010 IFS
Data Communication Cable SB-62
This cable is used to connect a digital camera or other external
equipment to the PA-2500U.
Note: Optional materials are sold separately.
— 3 —
SYSTEM CONFIGURATION
Note that CASSIOPEIA will not operate under AC adapter power alone if its main batteries are not loaded.
AC adapter
CASIO Digital Camera
Data communication
cable (SB-62)
Infrared port
CompactFlash Card
PC Card
CD-ROM
RS-232C Cable
Printer
Converter
Desktop Computer
Important
If you have a notebook PC with IrDA capabilities or a built-in modem, its COM port may not be set up for
use as a standard serial interface. In such a case, you must change the COM port settings so it can be
used as a standard serial interface. You should also check which COM ports are enabled on a desktop PC
before starting to install Windows CE Services.
See the documentation that comes with your PC for details.
CASSIOPEIA
Desktop Computer
Printer
Connection to a desktop computer is quick and easy using the optional cradle.
— 4 —
GENERAL GUIDE
• Touch screen
Displays text data and operational indicators, as well as icons that can be operated
using the stylus.
• Speaker
Outputs alarm tones and
other sounds.
• Infrared port
For infrared communication
• Data communication jack
For connection of a digital camera or
other external equipment.
• Keyboard
• Card slot
(CompactFlash card)
• Fn (Function) key
Pressing this key and then a number key
launches Calendar, Contacts, Tasks,
Pocket Word, Pocket Excel, Pocket Power
Point or Inbox.
• Microphone
For voice and other
sound recording.
• Card eject button
(PC card)
Press to eject the card
from the card slot.
• Card slot (PC card)
• Backlight button
Press to turn the backlight on and off.
The backlight also turns off automatically
if you do not perform any key or stylus
operation within a certain amount of
time.
Light
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.
• Stylus
For performing operations on the touch screen.
Important
Take care to avoid damaging or losing the stylus.
RESET
• Reset button
See page 11.
• Power button
Press to turn power on and off.
— 5 —
• Battery holder
Holds main batteries
(AA-size alkaline).
• Indicator clear button
Clears a warning indicator
(red) and alarm operation.
Pressing this button also
turns on power. Power can
be turned off only by pressing the power button.
• Battery holder release
Slide to release the battery holder to remove
it, or to secure the battery holder in place.
• Backup battery compartment
Holds the backup battery (CR2032).
• Card cover (CompactFlash card)
• Indicator (red)
Flashes to indicate the preset
alarm time has been reached, or
to indicate an operational condition
of the application being used.
• Charge indicator (green)
Indicates that charging is in
progress.
• AC adapter jack
For connection of the
AC adapter.
• RS-232C/Cradle connector
For connection of an RS-232C
cable or cradle.
ADJUSTING DISPLAY CONTRAST
Adjust display contrast whenever the figures on the display become dim and difficult to see. To adjust
display contrast, hold down [Alt] and press [<] (to make the display lighter) or [>] (to make the display
darker).
— 6 —
DESKTOP COMPUTER SYSTEM CONFIGURATION
The computer configuration described below is required to support the installer and the software applications contained on the Microsoft CD-ROM supplied with the CASSIOPEIA.
• Microsoft Windows NT Workstation 4.0 or Windows 95 (U.S. version)
• Desktop computer with a 486/33DX or higher processor (Pentium P90 recommended)
• 12 MB of memory for Windows NT Workstation 4.0
8 MB of memory (12 MB recommended) for Windows 95
• Hard disk drive with 10 to 50 MB of available hard disk space (actual requirements will vary based on
selection of features and user’s current system configuration)
• Available 9 or 25 pin communications port (adapter required for 25 pin communication port)
• One CD-ROM drive
• VGA or higher-resolution graphics card (Super VGA 256-color recommended)
• Keyboard
• Microsoft Mouse or compatible pointing device
Options for either Windows NT Workstation 4.0 or Windows 95:
• Audio card/speakers for sound
• Microsoft Office 97 or Microsoft Office 95
• Serial or built-in infrared adapter for synchronization
• Modem for remote synchronization
• Ethernet LAN connection for remote synchronization
Important
• If you have a notebook PC with IrDA capabilities or a built-in modem, its COM port may not be set up for
use as a standard serial interface. In such a case, you must change the COM port settings so it can be
used as a standard serial interface. You should also check which COM ports are enabled on a desktop
PC before starting to install Windows CE Services. See the documentation that comes with your PC for
details.
Note: Some of the applications contained on the CASSIOPEIA Bonus Software Applications
CD-ROM may require a system configuration different from that described above. See the
applicable files (ReadMe.txt and other files) that are also provided on the CD-ROM.
SETTING UP
Use the following procedure to set up the CASSIOPEIA before using it for the first time.
1. Load the main batteries.
• Load two AA-size alkaline batteries into the battery holder and then attach the holder to the CASSIOPEIA (page 9).
2. Load the backup battery (page 10)
3. Wait for about five seconds, and then press the power switch to turn on power.
• Turning on power causes the CASSIOPEIA display to change in the sequence shown below.
Start up
screen
4. Set up the CASSIOPEIA .
• Perform the procedures in accordance with the guidance messages that appear on the screen.
Set up
screens
— 7 —
Important
• Should the display lock up or go blank at this time, first perform the full reset (page 12). If this does not
correct the problem, remove the main batteries from the CASSIOPEIA and then remove the back-up
battery. Wait for about five minutes, and then perform this procedure again, starting from step 1. Be
sure that the positive (+) and negative (–) poles of the batteries are facing correctly when you reload
them into the CASSIOPEIA.
• If the message “A problem with memory contents has been found, and memory must be initialized...”
appears, perform the full reset operation described on page 12.
• If the images on the display appear dim, use the procedure on page 6 to adjust the contrast.
• Further information on the above procedures can be found in the H/PC Companion manual in
the section describing system set up.
— 8 —
REPLACING BATTERIES
The CASSIOPEIA has a dual power supply that consists of main batteries and a backup battery. Be sure to
load the main batteries and a back-up battery before using the CASSIOPEIA for the first time after purchasing it. Also, replace batteries as soon as possible after they start to get weak.
Important!
• Never remove both the main batteries and the backup battery from the CASSIOPEIA at the same time.
If you do, data stored in memory can be corrupted or lost entirely.
• Whenever the main batteries and the backup battery both require replacement, be sure to replace the
main batteries first, before replacing the backup battery.
• 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 battery with
the CASSIOPEIA.
• Be sure to watch out for signs of low battery power. Replace main batteries as soon as possible after the
message shown below appears on the display.
“Your main batteries are running very low on power. Please change the batteries at your next opportunity.”
Replace the backup battery as soon as possible after the message shown below appears.
“Your backup battery is very low or missing. Data loss may result from failure to replace the battery very
soon.”
Failure to replace batteries when they are low can result in corruption or loss of data stored in memory.
To replace the main batteries
1. Make sure the CASSIOPEIA is turned off.
• If the CASSIOPEIA is on, press the power switch to turn it off.
2. Close the CASSIOPEIA and turn it over.
3. While holding the battery holder release in the “FREE” position, slide the battery holder from the CASSIOPEIA.
• While holding the battery holder release in position, grasp the center of the battery holder and carefully
pull it from the CASSIOPEIA.
4. Remove the old batteries from the battery holder and load two new ones.
• When loading new batteries, make sure that their positive (+) and negative (–) ends are facing correctly.
— 9 —
5. Reattach the battery holder to the CASSIOPEIA.
• The battery holder will emit a click and the battery holder release will automatically lock when the battery
holder is securely in place.
To replace the backup battery
1. Make sure the CASSIOPEIA is turned off.
• If the CASSIOPEIA is on, press the power switch to turn it off.
2. Close the CASSIOPEIA and turn it over.
3. While pressing the release A with the stylus, slide the backup battery cover from the CASSIOPEIA.
4. Remove the old battery.
5. After wiping the surface of a new battery with a soft, dry cloth, load it into the CASSIOPEIA with its
positive (+) side facing up (so you can see it).
6. Slide the backup battery cover back on to the CASSIOPEIA until it snaps securely into place.
Important!
Failure to observe any of the following battery precautions can cause batteries to leak, creating the danger
of property damage, iniury and fire due to explosion.
• When loading batteries,make sure their positive (+) and negative (–) poles are facing correctly.
• Never mix new batteries with old ones.
• Never mix batteries of different types.
• Use only the batteries that are specifically recommended for the CASSIOPEIA.
— 10 —
RESET
You should reset the CASSIOPEIA whenever it stops working or whenever some other operational problem
has caused it to malfunction.
To reset the CASSIOPEIA
1. Press the RESET button with the stylus.
• This automatically turns off CASSIOPEIA power.
2. Press the power switch to turn on power and start the reset process.
• What happens next depends on memory status.
Case A: Memory Contents Not Corrupted
In this case, the display changes in the sequence shown below.
Start up
screen
Normal operation is restored after the desktop appears, with all memory contents and settings unchanged.
Nomal
Desktop
Case B: Memory Contents Corrupted
In this case, the message “A problem with memory contents has been found, and memory must be initialized...” appears on the screen. Use the stylus to touch the screen to change in the sequence shown below.
Start up
screen
Set up the CASSIOPEIA as described on page 7 of this manual. The desktop appears after set up is
complete.
When memory is seriously corrupted, the above procedure deletes all data stored in memory. When
memory contents are not deleted*, save any data you need onto a computer disk or other medium
and then perform the full reset procedure on page 12.
*Data may be corrupted, so edit data after checking it.
Set up
screens
— 11 —
FULL RESET
Perform the full reset when you want to clear all memory contents and settings because memory contents
are corrupted, because you have forgotten the security code, or for any other reason.
Important
The following procedure deletes all data in memory. Be sure to save any important data contents you may
need later to a computer disk or other medium. Always keep separate back-up copies of important data.
To perform a full reset
1. While holding down the [Ctrl] key and the [Alt] key, press the RESET button.
RESET button
[Ctrl] key
[Alt] key
2. The message “All memory contents will be deleted! Touch the screen to continue...” appears on the
display.
• If you don’t want to perform a full reset, press the RESET button.
This performs the normal reset, which does not clear memory contents.
\
3. To continue with the full reset procedure and clear all memory contents, touch the screen with the stylus.
• The display changes in the sequence shown below.
Start up
screen
Set up
screens
• Set up the CASSIOPEIA as described on page 7 of this manual.
— 12 —
CONNECTING TO A DESKTOP COMPUTER
Use the following procedure to connect the CASSIOPEIA to a desktop computer.
Note that exchanging data with a desktop computer requires Microsoft Windows CE Services, which is on
the Microsoft CD-ROM that is included with the CASSIOPEIA.
Requirements
RS-232C cable (supplied with CASSIOPEIA)
To connect to a desktop computer
1. Open the RS-232C connector cover on the side of the CASSIOPEIA.
2. Slide the cover into the CASSIOPEIA case as shown below.
3. Use the RS-232C cable to connect the CASSIOPEIA to your desktop computer.
• You can also connect the CASSIOPEIA to your computer using the cradle. See the documentation that
comes with the cradle for details.
• If your desktop computer supports infrared communications, you can also use CASSIOPEIA’s infrared
port to exchange data.
— 13 —
REPLACING THE PC CARD
The CASSIOPEIA comes equipped with a PC card slot that supports memory, modem and other PC cards*.
* Use only PC cards that are compatible with the CASSIOPEIA.
Important
• Be sure to keep the dummy card that comes with the CASSIOPEIA inserted in the card slot whenever
you are not using a PC card.
• Be sure to save any unsaved input or edited data before replacing the PC card.
• Never remove the PC card from the CASSIOPEIA while a PC card operation is in progress. Doing so
can corrupt CASSIOPEIA memory and PC card memory.
To replace the PC card
1. Extend the card eject button.
2. Press the card eject button to partially eject the card, and then pull the card out of the slot.
3. Insert a new PC card into the slot.
• Push the card into the slot as far as it will go.
Important
• Take care to orient the card correctly. The top of the card should be facing in the same direction as the
top of the CASSIOPEIA. The card will stop part way into the slot if it is not oriented correctly.
• If the card stops part way into the slot, do not try to force it. Doing so can damage the card or the
CASSIOPEIA. Remove the card, make sure it is oriented correctly, and then try inserting it again.
4. Return the card eject button back to its folded position.
Important
• See the documentation that comes with the PC card and the H/PC Companion manual for information
on PC card operations.
— 14 —
REPLACING THE COMPACTFLASH CARD
The CASSIOPEIA comes equipped with a card slot that supports CompactFlash cards.
Important
• If the card stops part way into the slot, do not try to force it. Doing so can damage the card or the
CASSIOPEIA. Remove the card, make sure it is oriented correctly, and then try inserting it again.
• Be sure to save any unsaved input or edited data before replacing the CompactFlash card.
To replace the CompactFlash card
1. Make sure that CASSIOPEIA power is turned off.
2. While pressing down on the card cover 1, slide the cover from the CASSIOPEIA 2.
1
2
3. Press the card eject button to partially eject the card, and then pull the card out of the slot.
4. Insert a new CompactFlash card into the slot.
• Double-check to make sure that the card is oriented correctly before you insert it into the slot.
Back of card
• Push the card into the slot as far as it will go.
Important
• Take care to orient the card correctly. The top of the card should be facing in the same direction as the
top of the CASSIOPEIA. The card will stop part way into the slot if it is not oriented correctly.
5. Replace the card cover.
Important
• In order to protect data stored in memory, the CASSIOPEIA automatically turns off whenever you re-
move the card cover. Also, power will not turn on while the cover is removed.
— 15 —
CONNECTING TO EXTERNAL EQUIPMENT
You can connect external equipment to the data communication connector. You can also use special software to set up the CASSIOPEIA to exchange image data with a CASIO digital camera.
See the documentation that comes with the software for details.
Requirements
Optional data communication cable (SB-62)
To connect external equipment
1. Make sure the external equipment and CASSIOPEIA are both turned off.
2. Use the SB-62 cable to connect the CASSIOPEIA to the external equipment.
— 16 —
MEMORY BACKUP / RESTORE
Make the backup copy by Windows CE Services to your PC before repairing PA-2500U, and restore the
data from PC to user’s PA-2500U after repairing.
For the details of Backup/Restore, refer to the operation manual of Windows CE Services.
Notes: 1* Backup program of Windows CE Services 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 PA-2500U to your PC with RS-232C cable.
2. Start Windows CE Services on your PC.
3. Windows CE Services detects PA-2500U is connected automatically.
4. PC shows the following dialog and click “Guest”.
5. Select “Backup/Restore...” from “Tools” pop up menu.
— 17 —
6. Click “Full: back up all data” and “Back Up Now”.
7. Confirm the file name of bakup copy and then click “OK”. Backup starts.
— 18 —
Restore
Execute Restore after repairing.
1. Turn on the user’s PA-2500U and then Welcome wizard appears.
2. Execute touch panel calibration and then skip other setups after calibration.
3. Connect repaired PA-2500U to your PC with RS-232C cable.
4. Start Windows CE Services on your PC.
5. Click “Restore” and confirm the file name backed up. Then click “OK”.
6. Click “Restore”.
— 19 —
7. Restoring starts.
8. Click “OK”.
— 20 —
BLOCK DIAGRAM
CompactFlash
Card
PCMCIA
Card
10 M 32.768 K
PLL X4
80 MHz
CPU
SH-7093 (IC1)
RAM 8 Mbyte
HM51W16165
(RAM5~RAM8)
ROM 8Mbyte
Memory Slot
(U301~U305)
Audio Amp.
MC34119
(IC9)
SP
Mini Jack
IrDA
RS232C
Connector
+3.3 V +5 V LCD Power
IrDA Transceiver
CIM-10S
(IC4)
RS232C Transceiver
MAX3241
(IC5)
Power Supply
Circuit
Gate Array
MB87A915 (IC3)
Keyboard
ACL
Voltage Detector
3.68M
LCD unit
LCD
EL
Indicator (Red) LED
Charge Indicator (Green) LED
EL Driver
Touch Panel
HV803
(IC801)
MIC
AAX2
Alkaline
or
Li-ion
Recharger
CR2032
— 21 —
Loading...