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CMD-C1/C8
SERVICE MANUAL
CMD-C1 : AEP Model UK Model AUS Model CMD-C8 : China Model

SPECIFICATIONS
Signalling format Frequency range GSM power class SIM chip Display GSM Transmit: 890 ~ 915 MHz Receive: 935 ~ 960 MHz Class 4 (2 W) Pluggable mini SIM card High resolution full graphics display Resolution: 97 x 33 pixels 1 header line for icons 3 lines x 16 large characters 200 kHz 124 Transmit frequency drift (synchronized) < ± 0.1 p.p.m. 2W 3.5 V ~ 4.0 V (nominal) Standby : up to 115h Talk time : up to 5.5h

Channel spacing Number of channels Frequency stability RF output power Power requirements Battery life

PORTABLE DIGITAL CELLULAR TELEPHONE WITH ACCESSORIES

Operating temperature Accessories operating temperature Battery pack charging temperature Dimensions Weight Volume Supplied accessories Optional accessories

­10°C to +55°C 0°C to +45°C 0°C to +40°C 98 mm x 60 mm x 26 mm 107 g 114 cm3 Power adaptor QN-C11AC (AEP), QN-C12AC (UK), QN-C13AC (AUS), QN-C81AC (China) Handsfree kit QN-C1HFK Cigar lighter charger QN-C1CC

Design and specifications are subject to change without prior notice. This appliance conforms with EEC Directive 87/308/EEC regarding interference suppression.

2

SECTION 1 OPERATING INSTRUCTIONS
The Basic Features of Your CMD-C1
The Jog Dial
The Jog Dial provides one-handed operation navigated by your left hand, freeing your right hand for other activity like taking notes, etc. Give the Jog Dial a quick turn in either direction in standby mode to spin through the main menu options. With one simple press of the Jog Dial in standby mode (the Network Operator name appears on the display), the Phonebook is at your fingertips. Press and hold the Jog Dial (for more than one second) to call a Phonebook selection or number on the display. Operation Rotate Function Scrolls through menu options.

Press (click)

Selects an option (highlighted) in the display. Accepts an entry made by alphanumeric keys.

Press and hold

Dials the phone number selected. Exits from one menu to the previous one.

MENU

The Menu Key
In standby mode, press the Menu key and then use the Jog Dial to spin through the Main Menu with options to change your phone settings and access different features. See also Menu Operation.

The Manner key
This is the key to good mobile phone manners. Press the Manner Key once to quickly turn the ringer to silent mode to avoid disturbance. Just press twice and the ringer is restricted to a descrete single beep. To turn the ringer on again, simply press the Manner Key again. During a call you can also press the Manner key once to mute the microphone; press again to turn on the microphone. For your reference, the options you activated using the Manner Key are indicated by an icon in the display.

The Voice Mail Key1
To speed dial your Voice Mail, press and hold the 1 Key to automatically dial your "personal answering service" to listen to messages, etc. See also Phonebook, Voice Mail.

The keypad Lock
Your CMD-C1 can be locked to avoid involutary dialling or menu scrolling especially when carrying your mobile
MENU

phone. Simply press

followed by the # key to lock your CMD-C1 keypad and even the Jog Dial restricting
MENU

any activity EXCEPT emergency calls (112). Simply repeat the key combination ( unlock your CMD-C1 again.

then # key) in order to

3

Icon Glossary
The Sony CMD-C1 lets you see at a glance if you have missed calls, have messages waiting, and the status of options you have selected (like if you have diverted your phone or turned the ringer off). Sony has developed the following icons to provide you with a quick overview of your mobile activity : Icon Explanation Keypad locked SMS Message waiting (flashing = SMS memory storage full)

Voice Mail Notification Battery strength (flashing = battery level low) Network Signal strength Network not available (no calls possible)

Incoming call

Option activated

Missed calles (Priority 1)

Limit Calls In/Out activated (Priority 2)

Limit Calls Out activated (Priority 2)

Limit Calls In activated (Priority 2)

Divert options activated (Priority 3)

Ringer switched to Silent Mode (Priority 5)

!

Ringer switched to Single Beep

Ringer switched to volume 0

Ringer Volume choices Speaker Volume Microphone Mute

4

Menu Overview
Rotate the Jog Dial or press the Menu key from standby mode to access the main menu :

DIVERT (page 24)
If Not Reachable If No Reply

MESSAGING (page 26)
Read Create Service Centre

REDIAL LIST (page 32)
Last Calls Received Calls Missed Calls

CONTROL (page 33)
Security Network Services Call Cost

PREFERENCES (page 42)
Caller ID Language Ringer Volume Ringer Tone Any Key Answer Key Click Sound DTMF Key Tones Illumination Auto Redial Auto Answer 1 Minute Beep Factory Settings

If Busy Settings All Calls Local Area Info Clear All

5

SECTION 2 DISASSEMBLY
Important notes :
1.The IMEI sticker mounted on the main board (visible from the battery compartment) should under no condition be removed. The IMEI number is the electronic identification of the hardware, it is also stored electronically and at no time is a discrepancy between number on the sticker and number within the set logic allowed. 2.The antenna unit can only be lifted off as a unit to allow access to parts underneath. The antenna itself needs to be handled with care. Damage, deformation or incorrect mounting of the patch antenna can lead to incorrect performance and even interference of the set.

1. Remove the battery cover and the battery. Note that the SIM card is also located in this area.

2. Remove 4 screws in the battery compartment. The upper and lower case are held by a number of claws, positions are indicated.

3. The lower claws can be released by gently pushing the upper case to left/right versus the lower case.

4. Insert the hook release jig (p/n 9-948-370-20) in the gap between upper and lower cosmetic, as indicated in the picture.

6

5. Push the hook release jig gently to the lower side, while holding the CMD-C1. In this way the hook release jig is used as a lever. More clamps between upper and lower case will now release and the parts can be taken out.

6. The front cosmetic and back cosmetic can now be separated, and the main board can be taken out.

7. The display unit can be lifted out. The LCD is connected with a flex cable and the LCD support is clamped onto the main board (2 clamps left and right side).

8. Remove 6 screws located on the display side to release the patch antenna.

9. Unsolder the antenna on the right side. The patch antenna assy can now be lifted off. fIt should be considered as one non-serviceable and sensitive item.

7

10. Parts on the main board specified in the parts list can now be reached.

For reassembly, apply the disassembly procedure in reverse order.

8

SECTION 3 PROGRAMMING INSTRUCTIONS
1. Setup
The software programming setup requires a PC (386 type or higher), the Level Shifter (LS-1), Connection Cable to the PC and the Level Shifter extension. · Connect the RS 232 cable from the Level Shifter to the com-port of the PC (com 1 or com 2). · Connect the Level Shifter extension between CMD-C1 and the Level Shifter. · Connect the power supply to the Level Shifter. No specific software installation is needed; only copy all the files to the PC.

PREPARATION FOR SOFTWARE UPDATE

PIN JIG INTERFACE ADAPTER

1. LEVEL SHIFTER LS - 1 2. INTERFACE ADAPTER WITH THE PIN - JIG

GSM conn. LEVEL SHIFTER LS - 1 rs-232

2. Important notes
· Before connecting the CMD-C1 to the Level Shifter, take out the battery of the CMD-C1; the CMD-C1 ·
must be powered from the Level Shifter with the GSM-switch. All other switches are always in the ON-position. The initial settings of the flash.exe program may not correspond with the normal correct settings. It is highly advisable to check the settings first (see below).

9

3. Software setup
Loading new software into the flash. · Start the program flash.exe by double-clicking on its icon in the explorer. · Select "File"/"Settings..." and check if the settings for the "Com Port", the "Baud Rate" and the "Erase Mode"
are correct. Normally the "Load Options" do not have to be changed. The default values are : Com Port: Baud Rate: Load Options: Erase Mode: COM 1 115200 Both Program Area, Smart Erase (!disable melody area erase for normal software update)

After changing the settings, the new values are stored in the file "flash.ini" in the windows directory.

· Select "File"/"Open..." to select an S record file for downloading. The C1.SRE file contains the software for
C1. Any other .SRE file is either only needed for the program itself, or can be a melody file (see below).

· Press the "LOAD" button of the program. · Power-on the mobile. · Now the program runs automatically.
NOTE ­ Please note that the CMD-C1 makes it possible to load only the different ringer melodies without changing the rest of the software programs. ­ For this procedure it is necessary to change the settings on the flash-loader for "EraseMode" to MELODY AREA instead of PROGRAM AREA, then load the new file c1melody.sre. ­ Remember to change the flash-loader settings back to PROGRAM AREA. ­ ! Whenever performing software update or melody software update, please remember that the erase settings (in the settings menu) should be correctly set.

10

SECTION 4 EXPLODED VIEW

11

SECTION 5 SPARE PARTS AND ACCESSORIES LIST
Ref. No.
1

Part Number

Description
Upper Case Upper Case Upper Case Upper Case Upper Case Lower Case Lid, Battery Cap, Antenna LCD, Assy Cushion Rubber Key Speaker Microphone Ringer Cushion, Ringer Jog-Dial DC Jack I/O Connector Battery Connector SIM Connector Battery Pack Screw 2,0x10 Screw 1,4x4,5 German German / Italian Swedish/ Norwegian Spanish / Portuguese English French / Dutch Danish / Finnish Greek / Turkish Czech / Polish Chinese (Traditional) Chinese (Simplified) Arabic French Hungarian / Romanian QN-C11AC QN-C12AC QN-C13AC QN-C81AC Level Shifter Hook Release Level Shifter extension Service Connection cradle

Comment
C1//F1 Orig. Grey Classic Silver C1/SF1 Pearl White C1/WF1 Metallic Blue C1/LF1 Metallic Red C1/RF1

X 3376 296 1 X 3377 190 1 X 3377 192 1 X 3377 191 1 X 3377 193 1 2 3 031 795 01 3 3031 807 01 4 3 031 839 01 5 A 3647 481 A 6 3 031 803 02 7 3 031 804 01 8 1 529 191 11 9 1 542 381 11 10 1 759 436 21 11 3 031 801 01 12 1 418 057 21 13 1 785 460 31 14 1 785 698 21 15 1 695 320 21 16 1 785 461 21 17 1 528 950 11 18 3 031 806 01 19 3 032 991 01 Instruction Manual 3 865 514 81 3 865 514 11 3 865 514 41 3 865 514 61 3 865 514 21 3 865 514 31 3 865 514 51 3 865 514 71 3 865 575 11 3 865 575 41 3 865 575 61 3 865 575 51 3 865 575 91 3 865 575 21 AC Power Supply 1 418 229 11 1 418 229 12 1 418 229 21 1 418 382 11 Jigs 9 948 320 40 9 948 370 20 9 948 320 60 9 948 360 30

LCD

CMD-C1 // F1 (CE1) CMD-C1 // SF1 (CE1)

CMD-C1 // SF1 (CE1)

Euro UK Australia Chinese LS 1 Jig LS 1/C 1

9-948-436-10

Sony Customer Relations & Service Europe European Technical Support

English Printed in Belgium 1999.02 Published by ETS

CMD-C1/C8
SERVICE MANUAL
CMD-C1 : AEP Model UK Model AUS Model CMD-C8 : China Model

REVISION
SPECIFICATIONS
Signalling format Frequency range GSM power class SIM chip Display GSM Transmit: 890 ~ 915 MHz Receive: 935 ~ 960 MHz Class 4 (2 W) Pluggable mini SIM card High resolution full graphics display Resolution: 97 x 33 pixels 1 header line for icons 3 lines x 16 large characters 200 kHz 124 Transmit frequency drift (synchronized) < ± 0.1 p.p.m. 2W 3.5 V ~ 4.0 V (nominal) Standby : up to 115h Talk time : up to 5.5h

Channel spacing Number of channels Frequency stability RF output power Power requirements Battery life

PORTABLE DIGITAL CELLULAR TELEPHONE WITH ACCESSORIES

Operating temperature Accessories operating temperature Battery pack charging temperature Dimensions Weight Volume Supplied accessories Optional accessories

­10°C to +55°C 0°C to +45°C 0°C to +40°C 98 mm x 60 mm x 26 mm 107 g 114 cm3 Power adaptor QN-C11AC (AEP), QN-C12AC (UK), QN-C13AC (AUS), QN-C81AC (China) Handsfree kit QN-C1HFK Cigar lighter charger QN-C1CC

Design and specifications are subject to change without prior notice. This appliance conforms with EEC Directive 87/308/EEC regarding interference suppression.

2

SECTION 1 OPERATING INSTRUCTIONS
The Basic Features of Your CMD-C1
The Jog Dial
The Jog Dial provides one-handed operation navigated by your left hand, freeing your right hand for other activity like taking notes, etc. Give the Jog Dial a quick turn in either direction in standby mode to spin through the main menu options. With one simple press of the Jog Dial in standby mode (the Network Operator name appears on the display), the Phonebook is at your fingertips. Press and hold the Jog Dial (for more than one second) to call a Phonebook selection or number on the display. Operation Rotate Function Scrolls through menu options.

Press (click)

Selects an option (highlighted) in the display. Accepts an entry made by alphanumeric keys.

Press and hold

Dials the phone number selected. Exits from one menu to the previous one.

MENU

The Menu Key
In standby mode, press the Menu key and then use the Jog Dial to spin through the Main Menu with options to change your phone settings and access different features. See also Menu Operation.

The Manner key
This is the key to good mobile phone manners. Press the Manner Key once to quickly turn the ringer to silent mode to avoid disturbance. Just press twice and the ringer is restricted to a descrete single beep. To turn the ringer on again, simply press the Manner Key again. During a call you can also press the Manner key once to mute the microphone; press again to turn on the microphone. For your reference, the options you activated using the Manner Key are indicated by an icon in the display.

The Voice Mail Key1
To speed dial your Voice Mail, press and hold the 1 Key to automatically dial your "personal answering service" to listen to messages, etc. See also Phonebook, Voice Mail.

The keypad Lock
Your CMD-C1 can be locked to avoid involutary dialling or menu scrolling especially when carrying your mobile
MENU

phone. Simply press

followed by the # key to lock your CMD-C1 keypad and even the Jog Dial restricting
MENU

any activity EXCEPT emergency calls (112). Simply repeat the key combination ( unlock your CMD-C1 again.

then # key) in order to

3

Icon Glossary
The Sony CMD-C1 lets you see at a glance if you have missed calls, have messages waiting, and the status of options you have selected (like if you have diverted your phone or turned the ringer off). Sony has developed the following icons to provide you with a quick overview of your mobile activity : Icon Explanation Keypad locked SMS Message waiting (flashing = SMS memory storage full)

Voice Mail Notification Battery strength (flashing = battery level low) Network Signal strength Network not available (no calls possible)

Incoming call

Option activated

Missed calles (Priority 1)

Limit Calls In/Out activated (Priority 2)

Limit Calls Out activated (Priority 2)

Limit Calls In activated (Priority 2)

Divert options activated (Priority 3)

Ringer switched to Silent Mode (Priority 5)

!

Ringer switched to Single Beep

Ringer switched to volume 0

Ringer Volume choices Speaker Volume Microphone Mute

4

Menu Overview
Rotate the Jog Dial or press the Menu key from standby mode to access the main menu :

DIVERT (page 24)
If Not Reachable If No Reply

MESSAGING (page 26)
Read Create Service Centre

REDIAL LIST (page 32)
Last Calls Received Calls Missed Calls

CONTROL (page 33)
Security Network Services Call Cost

PREFERENCES (page 42)
Caller ID Language Ringer Volume Ringer Tone Any Key Answer Key Click Sound DTMF Key Tones Illumination Auto Redial Auto Answer 1 Minute Beep Factory Settings

If Busy Settings All Calls Local Area Info Clear All

5

SECTION 2 DISASSEMBLY
Important notes :
1.The IMEI sticker mounted on the main board (visible from the battery compartment) should under no condition be removed. The IMEI number is the electronic identification of the hardware, it is also stored electronically and at no time is a discrepancy between number on the sticker and number within the set logic allowed. 2.The antenna unit can only be lifted off as a unit to allow access to parts underneath. The antenna itself needs to be handled with care. Damage, deformation or incorrect mounting of the patch antenna can lead to incorrect performance and even interference of the set.

1. Remove the battery cover and the battery. Note that the SIM card is also located in this area.

2. Remove 4 screws in the battery compartment. The upper and lower case are held by a number of claws, positions are indicated.

3. The lower claws can be released by gently pushing the upper case to left/right versus the lower case.

4. Insert the hook release jig (p/n 9-948-370-20) in the gap between upper and lower cosmetic, as indicated in the picture.

6

5. Push the hook release jig gently to the lower side, while holding the CMD-C1. In this way the hook release jig is used as a lever. More clamps between upper and lower case will now release and the parts can be taken out.

6. The front cosmetic and back cosmetic can now be separated, and the main board can be taken out.

7. The display unit can be lifted out. The LCD is connected with a flex cable and the LCD support is clamped onto the main board (2 clamps left and right side).

8. Parts on the main board specified in the parts list can now be reached.

For reassembly, apply the disassembly procedure in reverse order.

7

SECTION 3 PROGRAMMING INSTRUCTIONS
1. Setup
The software programming setup requires a PC (386 type or higher), the Level Shifter (LS-1), Connection Cable to the PC and the Level Shifter extension. · Connect the RS 232 cable from the Level Shifter to the com-port of the PC (com 1 or com 2). · Connect the Level Shifter extension between CMD-C1 and the Level Shifter. · Connect the power supply to the Level Shifter. No specific software installation is needed; only copy all the files to the PC.

PREPARATION FOR SOFTWARE UPDATE

PIN JIG INTERFACE ADAPTER

1. LEVEL SHIFTER LS - 1 2. INTERFACE ADAPTER WITH THE PIN - JIG

GSM conn. LEVEL SHIFTER LS - 1 rs-232

8

2. Important notes
· Before connecting the CMD- to the Level Shifter, take out the battery of the CMD- the CMD- C1 C1; C1 ·
must be powered from the Level Shifter with the GSM-switch. All other switches are always in the ON-position. The initial settings of the flash.exe program may not correspond with the normal correct settings. It is highly advisable to check the settings first (see below).

3. Software setup
Loading new software into the flash. · Start the program flash.exe by double-clicking on its icon in the explorer. · Select "File"/"Settings..." and check if the settings for the "Com Port", the "Baud Rate" and the "Erase Mode"
are correct. Normally the "Load Options" do not have to be changed. The default values are : Com Port: Baud Rate: Load Options: Erase Mode: COM 1 115200 Both Program Area, Smart Erase (!disable melody area erase for normal software update)

After changing the settings, the new values are stored in the file "flash.ini" in the windows directory.

· Select "File"/"Open..." to select an S record file for downloading. The C1.SRE file contains the software for
C1. Any other .SRE file is either only needed for the program itself, or can be a melody file (see below).

· Press the "LOAD" button of the program. · Power-on the mobile. · Now the program runs automatically.
NOTE ­ Please note that the CMD-C1 makes it possible to load only the different ringer melodies without changing the rest of the software programs. ­ For this procedure it is necessary to change the settings on the flash-loader for "EraseMode" to MELODY AREA instead of PROGRAM AREA, then load the new file c1melody.sre. ­ Remember to change the flash-loader settings back to PROGRAM AREA. ­ ! Whenever performing software update or melody software update, please remember that the erase settings (in the settings menu) should be correctly set.

9

4. Display contrast adjustment
1. The hardware set-up for this adjustment is the same as for the software update. 2. The level shifter power to the CMD-C1 should be off (GSM on/off toggle switch on LS1) while connecting the CMD-C1. Once the hardware connection is made, the power can be set to ON. 3. The display contrast adjustment software is DOS-based, the program name is LDCONT.EXE. 4. When activating this program (either from within Windows or from the DOS prompt), it will suppose automatically that you are using the COM1 port to connect from the PC to the level shifter. Any other COM port can be used when starting from the DOS prompt and using the following parameter: LDCONT.EXE ­p, where is the number of the COM port you want to activate. For example: when using COM port 2, the correct command to activate the program is: LDCONT.EXE ­p2. 5. When the program is correctly set and activated, the following sequence will appear on the PC:

· Waiting for mobile · LCD contrast : x

(this message will appear for a few seconds only) (x is a numeric value between 0 and 15)

6. The LCD contrast can now be adjusted with the up () and down () arrows of the PC keyboard while observing the CMD-C1 display for the best setting. While changing the values from the PC, the contrast will change in the CMD-C1 display. 7. When the best setting is found, the correct value will automatically be written into the CMD-C1 memory upon exiting the program. It is therefore sufficient to leave the DOS prompt to write the value into the CMD-C1 memory. NOTE The distribution of GSM software is based upon the registration of the Level Shifter hardware.

10

SECTION 4 EXPLODED VIEW

11

SECTION 5 SPARE PARTS AND ACCESSORIES LIST
Part Number X 3376 296 1 X 3377 190 1 X 3377 191 1 X 3377 192 1 X 3377 193 1 X 3377 297 1 X 3377 579 1 X 3377 580 1 2 3 031 795 01 3 3 031 807 01 4 3 031 839 01 5 A 0602235 A 3 031 803 02 6 X 3376 297 1 7 3 031 804 01 3 031 804 11 3 031 804 21 3 031 804 31 8 1 529 191 11 9 1 542 381 11 10 1 759 436 21 11 3 031 801 01 12 1 418 057 22 13 1 785 460 32 14 1 793 148 22 15 1 695 320 21 17 1 528 950 11 18 3 031 806 01 Instruction Manual 3 865 514 81 3 865 514 11 3 865 514 41 3 865 514 61 3 865 514 21 3 865 514 31 3 865 514 51 3 865 514 71 3 865 575 11 3 865 575 41 3 865 575 61 3 865 575 51 3 865 514 91 3 865 575 21 AC Power Supply 1 418 229 11 1 418 229 12 1 418 229 21 1 418 382 11 Jigs 9 948 320 40 9 948 320 60 9 948 360 30 9 948 370 20 9 948 436 10 Ref. No. 1 Description
Upper Case Upper Case Upper Case Upper Case Upper Case Upper Case Upper Case Upper Case Lower Case Lid, Battery Cap, Antenna LCD Assy (Including cushion) LCD cushion Guide LCD, Assy Rubber Key Rubber Key Rubber Key SFR-Key Pad Rubber Key SFR-Key Pad Speaker Microphone Ringer Cushion, Ringer Jog-Dial DC Jack I/O Connector Battery Connector Battery Pack QN-C1BP Screw 2,0x10 German German / Italian Swedish/ Norwegian Spanish / Portuguese English French / Dutch Danish / Finnish Greek / Turkish Czech / Polish Chinese (Traditional) Chinese (Simplified) Arabic French (own manual from customer) Hungarian / Romanian QN-C11AC QN-C12AC QN-C13AC QN-C81AC Level Shifter Pin-Jig with Interface Cradle Hook Release Service Manual Euro UK Australia Chinese LS1 LS1/C1 Level Shifter extension Service-Test Connector Jig AEP / UK Model

Comment
Orig. Grey C1//F1 Classic Silver C1/SF1 Metallic Blue C1/LF1 Pearl White C1/WF1 Metallic Red C1/RF1 Classic Silver C8/SC1 Pearl White C8/WC1 Metallic Blue C8/LC1

Dark version Light version France, SIM LOCK C1/LF0 Dark version France, SIM LOCK C1/WF0 Light version

CMD-C1 // F1 (CE1) CMD-C1 // SF1 (CE1)

CMD-C1 // SF1 (CE1)

CMD-C1 // LFO (CE1) CMD-C1 // WFO (CE1)

9-948-436-60

Sony Service Centre (Europe) N.V. Technical & Customer Services Europe

English Printed in Belgium 1999.05 Published by TCSE

CMD-C1/C8
SERVICE MANUAL
CMD-C1 : AEP Model UK Model AUS Model CMD-C8 : China Model

SUPPLEMENT-1
Please file this supplement with the CMD-C1/C8 Service Manual (9-948-436-10).

Subject : Adjustments

PORTABLE DIGITAL CELLULAR TELEPHONE WITH ACCESSORIES

Display contrast adjustment
1. The hardware set-up for this adjustment is the same as for the software update (see page 9 of the Service Manual). 2. The level shifter power to the CMD-C1 should be off (GSM on/off toggle switch on LS1) while connecting the CMD-C1. Once the hardware connection is made, the power can be set to ON. 3. The display contrast adjustment software is DOS-based, the program name is LDCONT.EXE. 4. When activating this program (either from within Windows or from the DOS prompt), it will suppose automatically that you are using the COM1 port to connect from the PC to the level shifter. Any other COM port can be used when starting from the DOS prompt and using the following parameter: LDCONT.EXE ­p, where is the number of the COM port you want to activate. For example: when using COM port 2, the correct command to activate the program is: LDCONT.EXE ­p2. 5. When the program is correctly set and activated, the following sequence will appear on the PC: · · Waiting for mobile LCD contrast : x (this message will appear for a few seconds only) (x is a numeric value between 0 and 15)

6. The LCD contrast can now be adjusted with the up () and down () arrows of the PC keyboard while observing the CMD-C1 display for the best setting. While changing the values from the PC, the contrast will change in the CMD-C1 display. 7. When the best setting is found, the correct value will automatically be written into the CMD-C1 memory upon exiting the program. It is therefore sufficient to leave the DOS prompt to write the value into the CMD-C1 memory. NOTE The distribution of GSM software is based upon the registration of the Level Shifter hardware.

9-948-436-11

Sony Customer Relations & Service Europe European Technical Support

English Printed in Belgium © 1999.02 Published by ETS