Samsung SCH-1500 Service Manual

PORTABLE CELLULAR

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TELEPHONE

SCH-1500 Series

Manual

SERVICE

PORTABLE CELLULAR TELEPHONE CONTENTS

1. General Introduction

2. Specification

3. Installation

4. Nam Programming

5. Product Support Tools

6. Circuit Description

7. Test Procedure

8. Trouble Shooting

9. Exploded Views and Parts List

10. PCB Diagrams

11. Electrical Parts List

12. Block & Circuit Diagrams

ELECTRONICS

Samsung Electronics Co.,Ltd.

1. General Introduction

The SCH-1500 DBDM phone functions as both analog phone working in AMPS (Advanced Mobile Phone Service) mode and digital phone working in PCS (Personal Communication Service) mode. The following standards and minimum performance standards shall be met or exceeded by each subscriber unit.

Air Interface

The Subscriber Unit shall be Dual mode and Dual band in compliance with ANSI J-STD-008 and TIA/EIA IS95A(Analog).

ANSI J-STD-008 : Personal Station-Base Station Compatibility Requirements for 1.8 to 2.0 GHz CDMA PCS.

ANSI J-STD-018 : Recommended Minimum Performance Requirements for 1.8 to 2.0 GHz CDMA Personal

Stations.

CDG Ref. Document #27 : High Rate Speech Service Option for Wideband Spread Spectrum System.

TIA/EIA IS-96A : Speech Service Option 1 Standard for Dual mode Wideband Spread Spectrum Cellular

Systems.

TIA/EIA IS-125 : Recommended Minimum Performance standards for Digital Cellular Wideband Spread

Spectrum Speech Service Option1.

TIA/EIA IS-126-A : Mobile Station Loop back Service Option standard.

CDMA Receiver/Transmitter Specifications and Requirements

The Subscriber Unit shall comply with ANSI J-STD-008 and meet or exceed TIA/EIA IS-98A. The Subscriber Unit shall comply with Personal Station Class II.

Analog Receiver/Transmitter Specifications and Requirements

The Subscriber Unit shall comply with TIA/EIA IS-95A and meet or exceed TIA/EIA IS-95. The Subscriber Unit shall comply with Mobile Station Power Class III (600mW).

Samsung Electronics 1-1

General Introduction

Memo

1-2 Samsung Electronics

2. Specification

2-1 General

Frequency Range PCS Mode AMPS Mode

Transmitter : 1850 ~ 1910 MHz 824 ~ 849 MHz Receiver : 1930 ~ 1990 MHz 869 ~ 894 MHz

Channel Spacing : 1.25 MHz 30 kHz

Number of Channels : 1200 832

Duplex Spacing : 80 MHz 45 MHz

Frequency Stability : (FRX - 80MHz) ± 150Hz ± 2.5 ppm

Operating Temperature : -30 oC ~ 60 oC

Operating Voltage

HHP : 7.2V DC (± 10%) Hands-free : 13.7V DC (± 10%)

Size and Weight

including standard battery : 14.6 x 5.4 x 2.5 cm, 191 cc, 220 g (7.7 ounces) including extended-life battery : 14.6 x 5.4 x 3.35 cm, 250 cc, 226 g (7.9 ounces)

Samsung Electronics 2-1

Specification

2-2 AMPS Mode

TRANSMITTER

RF output power : 0.6 W (+2/ - 4 dB)

Carrier ON/OFF Conditions

ÒONÓ Condition : within ± 3 dB of specification output (in 2mS) ÒOFFÓ Condition : below - 60 dBm (in 2mS)

Compressor

Compression Rate : 2:1 Attack Time : 3 mS Recovery Time : 13.5 mS Reference Input : Input level for producing a nominal ± 2.9 kHz peak

frequency deviation of transmitted carrier

Preamphasis : 6 dB/OCT within 0.3 ~ 3 kHz

Maximum Frequency Deviation

F3 of G3 : ± 12 kHz (± 10 %) Supervisory Audio Tone : ± 2 kHz (± 10 %) Signaling Tone : ± 8 kHz (± 10 %) Wideband Data : ± 8kHz (± 10 %)

Post Deviation Limiter Filter

3.0 kHz ~ 5.9 kHz : above 40LOG (F/3000) dB

5.9 kHz ~ 6.1 kHz : above 35 dB

6.1 kHz ~ 15 kHz : above 40 LOG (F/3000) dB Over 15 kHz : above 28 dB

Spectrum Noise Suppression

For All Modulation

f0+ 20 kHz ~ f0+ 45 kHz : above 26 dB

For Modulation by Voice and SAT

f0+ 45 kHz : above 63 + 10LOG (Py) dB

For Modulation by WBD (without SAT) and ST (with SAT)

f0+ 45 kHz ~ f0+ 60 kHz : above 45 dB f0+ 60 kHz ~ f0+ 90 kHz : above 65 dB f0+ 90 kHz ~ 2f

: above 63 + 10LOG (Py) dB

(where f0= carrier frequency,

Py = mean output power in watts)

Harmonic and Conducted Spurious Emissions : above 43 + 10 LOG (Py) dB

2-2 Samsung Electronics

Specification

RECEIVER

DE-Emphasis : -6 dB/OCT within 0.3 ~ 3 kHz

Expander

Expansion Rate : 1:2 Attack Time : within 3 mS Recovery Time : within 13.5 mS Reference Input : Output level to a 1000 Hz tone from a carrier within ±

2.9 kHz peak frequency deviation

Sensitivity : 12 dB SINAD/-116 dBm

Intermodulation Spurious Response Attenuation : above 65 dB

RSSI Range : above 60 dB

Protection Against Spurious Response Interference : above 60 dB

In Band Conducted Spurious Emissions

Transmit Band : below -60 dBm Receive Band : below -80 dBm

Out of Band Conducted Spurious Emissions : below - 47 dBm

Radiated Spurious Emissions

Frequency Range Maximum Allowable EIRP

25 ~ 70 MHz -45 dBm

70 ~ 130 MHz -41 dBm 130 ~ 174 MHz -41 ~ -32 dBm 174 ~ 260 MHz -32 dBm 260 ~ 470 MHz -32 ~ -26 dBm 470 ~ 1 GHz -21 dBm

Samsung Electronics 2-3

Specification

2-3 PCS Mode

TRANSMITTER

Waveform Quality : 0.944 or more

Open loop Power Control Range

-25 dBm : -60.5 dBm ~ 41.5 dBm

-65 dBm : -20.5 dBm ~ -1.5 dBm

-104 dBm : +15.0 dBm ~ +30.0 dBm

Minimum Tx Power Control : -50 dBm below

Closed Loop Power Control Range : ±24 dB

Maximum RF Output Power : 200 mW (+23 dBm)

Occupied Bandwidth : 1.23 MHz

Conducted Spurious Emissions @ 1.25 MHz : -42 dBc/30 KHz

RECEIVER

Rx Sensitivity and Dynamic Range : -104 dBm, FER=0.5% or less (Rate Set 1) : -25 dBm, FER=0.5% or less

Conducted Spurious Emission

1930 ~ 1990 MHz : <-81 dBm 1850 ~ 1910 MHz : <-61 dBm All Other Frequencies : <-47 dBm

Single Tone Desensitization : lower than 1%

Rx power = -101 dBm Tone power = -30 dBm Tone offset from carrier = ±1.25 MHz

Intermodulation Spurious Response Attenuation : lower than 1%

Rx power = -101 dBm Tone power 1 = -43 dBm Tone power 2 = -43 dBm Tone 1 offset from carrier = ±1.25 MHz Tone 2 offset from carrier = ±2.05 MHz

2-4 Samsung Electronics

2-4 PCS Debug Display Information

To select debug display mode : Press [MENU] + [8] + [0], and press [0] + [4] + [0] + [7] + [9] + [3] or press [0] + [0] + [0] + [0] + [0] + [0].

Specification

IN IDLE MODE

2 3

SIDxxxxx SIx x

T - xx Dxxx - xx Pxxx CHxxxx xx xx

IN CONVERSATION MODE

10 11

TVx RVx xx x T - xx Dxxx - xx Pxxx CHxxxx xx xx

1 Sxxxxx : SID (System Identification) toggle

Nxxxxx : NID (Network Identification) toggle

2 SIx : Slot cycle index (lowest between the system

and the phone will be used)

1. SI0 : Slot Index 0 6 8

3 Handset Status : 0 - NO SVC

4 T-xx : Tx adjust, Value ranges from +63~0~63dB

5 Dxxx : Sector power in dBm

6 -xx : ec/lo

7 Pxxx : PN offset

2. SI1 : Slot Index 1

3. SI2 : Slot Index 2

1 - Synchronization 2 - Paging (Idle) 3 - Reg. Access state 4 - Traffic Initialization 5 - Waiting for order 6 - Waiting for answer 7 - Conversation state 8 - Exit

8 CHxxxx : Channel number

9 TV : Tx vocoder rate (8 is full rate, 1 is 1/8th rate)

10 RV : Rx vocoder rate (8 is full rate, 1 is 1/8th rate)

11 xx : Walsh code used in traffic channel

12 System acquisition state

Samsung Electronics 2-5

Specification

2-5 AMPS Debug Display Information

To select debug display mode : Press [MENU] + [8] + [0], and press [0] + [4] + [0] + [7] + [9] + [3] or press [0] + [0] + [0] + [0] + [0] + [0].

1 SIDxxxxx : AMPS Home System ID

7 4

2 PWRx : Power Level 0 ~ 7

3 SATx : Supervisory Audio Tone code (0 ~ 3)

SIDxxxxx x x

PWRx RSSIxxx SATx CHxxxx

xx xx

4 x (Using Frequency Band) : A Band or B Band

5 RSSIxxx : RSSI value

6 CHxxx : Using Channel

7 Handset Status : 1 - Initialization state

2 - Idle state 3 - System Access state 4 - Voice channel state

8 System acquisition state

2-6 Samsung Electronics

3. Installation

SCH-1500 MAIN

STANDARD BATTERY PACK : BTL859S

EXTENDED BATTERY PACK : BTL1359L

DTC : DTC59

Press this button to release the battery pack.

3-1 Installing a Battery Pack

1. To attach the battery pack after charging, align it with the phone about 1cm (1/2Ó) away from its place so that the two arrows on the phone are seen, the battery charge contacts pointing downward.

2. Slide the battery pack upwards until it clicks firmly into position. The phone is now ready to be turned on.

3-2 For Desk Top Use

1. Choose a proper location to install the charger for desk top use.

2. Plug the power cord of the charger into an appropriate wall socket. When the power is connected correctly, the lamps turn on briefly.

3. To remove the battery pack, release it by pressing the button on the rear of the phone.

4. Slide the battery pack downward about 1cm (1/2Ó) and lift it away from the phone.

3. To charge the battery pack, insert the battery pack into the rear slot of the charger. The lamp marked BAT on the front panel of the charger lights up red.

4. If you do not wish to use the phone while charging the battery, insert the phone with the battery pack attached into the front slot of the charger. The lamp marked PHONE on the front panel of the charger lights up red.

Specifications using DTC

Battery Type Standard Battery Extended battery

(Li-Ion, 850mAH) (Li-Ion, 1350mAH)

Charging Time 3 hours 5 hours

SEC. code GH43-10114A GH43-10113A

Figure 3-1 Charging the Phone and Battery

Samsung Electronics 3-1

Installation

HHP ANTENNA

CLAM SHELL MOUNT UPPER

CLAM SHELL MOUNT LOWER

CRADLE

FIXED SCREW

CAR

HANDS

FREE BOX

3-3 For Mobile Mount

3-3-1 Antenna

1. Choose a proper location to install the antenna.

¥The center of the roof top provides the best

performance.

¥The edge of the rear trunk also provides a

good performance. However, the antenna should be higher than the roof of the car.

¥In case of on-glass antenna, you should align

the antenna base with the round plate to connect the cables correctly.

2. Mount the antenna vertically, connect the antenna cable.

3. Tighten the antenna nut fully.

3-3-2 Cradle

1. Choose a location where it is easy to reach and does not interfere with the driverÕs safe operation of the car.

2. Separate the two halves of the clamshell by removing the two large slotted screws. See the figure 3-2.

3. Drill holes and mount the lower half of the clamshell by using the screws.

4. Place the cradle onto the remaining half of the clamshell and assemble them by using the screws.

5. Reassemble the two halves of the clamshell together. Adjust the mounting angle and tighten the two slotted screws.

Figure 3-2 Cradle Installation

3-2 Samsung Electronics

Installation

MOUNTING BRACKET

3-3-3 Hands-Free Box

1. Drill holes in a proper location for the handsfree box, attach the mounting bracket by using the screws. See the figure 3-3.

2. Install the hands-free box into the bracket.

3-3-4 Hands-Free Microphone

1. It is recommended to install the microphone where it is 30-45 cm (12-18Ó) away from the driver. Choose the location where is least susceptible to interference caused by external noise sources, ie, adjacent windows, radio speakers, etc. Normal place is the sun visor.

2. Once the microphone has been correctly positioned, connect the microphone wire to the MIC jack on the hands-free box.

Figure 3-3 Hands-Free Box Installation

Samsung Electronics 3-3

Installation

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3-3-5 Cables

1. Connect the cradle and the hands-free box with the data cable. See the figure 3-4.

2. Connect the antenna cable to the RF jack of the cradle.

3. Connect one of the power cable to the battery or ignition terminal. Connect the red wire to the battery (+) terminal, black wire to the vehicle chassis. Then connect the battery (-) terminal to the vehicle chassis.

4. Connect the other end of the power cable to the PWR jack of the hands-free box.

Notes: ¥It is recommended to connect the power cable

directly to the battery to avoid power noise.

¥Make sure the connection between the battery (-)

terminal and vehicle chassis is made correctly.

¥Make sure the fuse having a proper capacity is

used on the power cable.

¥Make sure the cables do not pass over any sharp

metal edge that may damage it.

Figure 3-4 Cable Connections

3-4 Samsung Electronics

4. NAM Programming

NAM features can be programmed as follows:

Notes:

- If you enter the NAM program mode, each item shows the currently stored data. Go to the next item by

pressing OK.

- You can modify the data by entering a new data.

- If you enter a wrong digit, press CLR to delete the last digit. Press and hold CLR to delete all digit.

- To scroll items backwards press the VOLUME button on the left side of the phone.

4-1 Single NAM

4-1-1 General Setup

LCD Display Key in Function

Menu, 5, 0 Select NAM programming

Enter Lock

??????

SVC Menumi 1:Phone# 2:General 3:NAM

ESN

B0000000

CAI version

SCM

10101010

Lock Code

0000

Slot Mode

6-digit code Enter random 6 digit code (MSL)

2 Choose ÔGENERALÕ

Volume ¹ Electronic Serial Number of the phone is displayed

Volume ¹ Common Air Interface version is displayed

Volume ¹ Station Class Mark displays the power class, transmission,

slotted class, dual mode.

Lock code, current status is displayed. 4-digit code -to change, enter new code. OK -stores it.

Slot mode. ÔYesÕ indicates the slot mode. m or i -changes the status. OK -store it.

Slot Index

Samsung Electronics 4-1

0 ~ 7 -to change, enter new one. OK -stores it.

Slot mode index. The higher, the longer sleeping time.

NAM Programming

4-1-2 Phone #

LCD Display Key in Function

SVC Menumi 1:Phone# 2:General 3:NAM

Phone #

1234567890

Mobile ID #

1234567890

1 Choose ÔPhone#Õ

Phone number

Mobile ID

4-1-3 Setting Up NAM

LCD Display Key in Function

SVC Menumi 1:Phone# 2:General 3:NAM

Volume ¹ NAM Programming Menu is displayed.

SVC Menumi 3:NAM

IMSI_MCC

310

IMSI_MNC

CDMA ACCOLC

4-2 Samsung Electronics

3 Choose ÔSetup NAMÕ.

IMSI Mobile Country Code, current code is displayed. Number -to change, enter new one. OK -stores it.

IMSI Mobile Network Code, current code is displayed. Number -to change, enter new one. OK -stores it.

CDMA Access Overload Class, current status is displayed. Class number -to change, enter new one. OK -stores it.

LCD Display Key in Function

NAM Programming

CDMA Home SID

Yes

CDMA fSID

Yes

CDMA fNID

Yes

HOME SID

1700

NID

CDMA Home system ID, current status is displayed m or i -changes the status OK -stores it.

CDMA foreign SID, current status is displayed. m or i -changes the system. OK -stores it.

CDMA foreign NID, current status is displayed. m or i -changes the system OK -stores it.

SID written in the list, current status is displayed. Number -to change, enter new one. OK -store it.

NID written in the list, current status is displayed. Number -to change, enter new one. OK -stores it.

Samsung Electronics 4-3

NAM Programming

4-2 Dual NAM

4-2-1 General Setup

LCD Display Key in Function

Menu, 5, 0 Select NAM programming

Enter Lock

??????

SVC Menumi 1:Phone# 2:General 3:NAM1 4:NAM2

ESN

B0000000

CAI version

SCM

10101010

Lock Code

0000

6-digit code Enter random 6 digit code (MSL)

2 Choose ÔGENERALÕ

Volume ¹ Electronic Serial Number of the phone is displayed

Volume ¹ Common Air Interface version is displayed

Volume ¹ Station Class Mark displays the power class, transmission,

slotted class, dual mode.

Lock code, current status is displayed. 4-digit code -to change, enter new code. OK -stores it.

Slot Mode

Slot Index

4-4 Samsung Electronics

m or i -changes the status.

OK -store it.

0 ~ 7 -to change, enter new one. OK -stores it.

Slot mode. ÔYesÕ indicates the slot mode.

Slot mode index. The higher, the longer sleeping time.

4-2-2 Phone # NAM1

LCD Display Key in Function

NAM Programming

SVC Menumi 1:Phone# 2:General 3:NAM1 4:NAM2

Phone # 1:NAM1 2:NAM2

Phone #

1234567890

Mobile ID #

1234567890

4-2-3 Phone # NAM2

1 Choose ÔPhone#Õ

1 Choose ÔNAM1Õ

Phone number

Mobile ID

LCD Display Key in Function

SVC Menumi 1:Phone# 2:General 3:NAM1 4:NAM2

Phone # 1:NAM1 2:NAM2

Phone #

1234567890

Mobile ID #

1234567890

1 Choose ÔPhone#Õ.

2 Choose ÔNAM2Õ.

Phone number

Mobile ID

Samsung Electronics 4-5

NAM Programming

4-2-4 Setting Up NAM1

LCD Display Key in Function

SVC Menumi 1:Phone# 2:General 3:NAM1 4:NAM2

SVC Menumi 3:NAM1

IMSI_MCC

310

IMSI_MNC

CDMA ACCOLC

Volume ¹ NAM Programming Menu is displayed.

3 Choose ÔSetup NAM1Õ.

IMSI Mobile Country Code, current code is displayed. Number -to change, enter new one. OK -stores it.

IMSI Mobile Network Code, current code is displayed. Number -to change, enter new one. OK -stores it.

CDMA Access Overload Class, current status is displayed. Class number -to change, enter new one. OK -stores it.

CDMA Home SID

Yes

CDMA fSID

Yes

CDMA fNID

Yes

HOME SID

1700

NID

CDMA Home system ID, current status is displayed m or i -changes the status OK -stores it.

CDMA foreign SID, current status is displayed. m or i -changes the system. OK -stores it.

CDMA foreign NID, current status is displayed. m or i -changes the system OK -stores it.

SID written in the list, current status is displayed. Number -to change, enter new one. OK -store it.

NID written in the list, current status is displayed. Number -to change, enter new one. OK -stores it.

4-6 Samsung Electronics

4-2-5 Setting Up NAM2

LCD Display Key in Function

NAM Programming

SVC Menumi 1:Phone# 2:General 3:NAM1 4:NAM2

SVC Menumi 4: NAM2

IMSI_MCC

310

IMSI_MNC

CDMA ACCOLC

Volume ¹ NAM Programming Menu is displayed.

4 Choose ÔSetup NAM2Õ.

IMSI Mobile Country Code, current code is displayed. Number -to change, enter new one. OK -stores it.

IMSI Mobile Network Code, current code is displayed. Number -to change, enter new one. OK -stores it.

CDMA Access Overload Class, current status is displayed. Class number -to change, enter new one. OK -stores it.

CDMA Home SID

Yes

CDMA fSID

Yes

CDMA fNID

Yes

HOME SID

1700

NID

CDMA Home system ID, current status is displayed m or i -changes the status OK -stores it.

CDMA foreign SID, current status is displayed. m or i -changes the system. OK -stores it.

CDMA foreign NID, current status is displayed. m or i -changes the system OK -stores it.

SID written in the list, current status is displayed. Number -to change, enter new one. OK -store it.

NID written in the list, current status is displayed. Number -to change, enter new one. OK -stores it.

Samsung Electronics 4-7

NAM Programming

Memo

4-8 Samsung Electronics

5. Product Support Tools

5-1 General

These tools enable you to edit or transfer all the EEPROM data of SCH-1500 DBDM phone.

Equipment Required

¥ IBM compatible PC (above 386, 33MHz, 8MB

RAM, DOS 5.0, 500K of memory free to execute program, and 1MB of disk space free for software upgrade.)

¥ SCH-1500 DM cable

¥ SCH-1500 Battery

Connection

Connect the test jig to COM1 port on the PC and connect the interface cable of the test jig to the phone.

Caution : When you use the PST program with a notebook PC, you might encounter some problems. Check your serial port setup in your notebook PC (see your notebook PC manual).

Software Installation

1. Insert the PST floppy disk into drive (A:).

2. Create an appropriate directory to the drive (C:) for PST software.

3. Copy all files of the drive (A:) to the directory you made.

4. Execute PSTxx.EXE to run the PST program.

Note : There are three executable files in the new directory you made: PSTxx.EXE: PST program where xx is the PST version number.

DonÕt worry about the serial port setup when you use a desktop PC.

Samsung Electronics 5-1

Product Support Tolls

5-2 Product Support Tool (PST)

The Product Support Tool(PST) offers you the ability to interface with the SCH-1500 DBDM phone using a personal computer. You can program the phone, swap phone data, and download software upgrades.

Notes :

¥ This software is made to be executed on the MS-

DOS, not on the DOS mode within Windows95. If this software is executed on Windows 95 by mistake, it may work abnormally and damage the phone especially while downloading. Please

check the mode you are using. ¥ You can transfer EEPROM data one unit at a time. ¥ It is illegal to copy to several units.

5-2-1 Getting Started

MAIN MENU SCREEN

1. At the DOS prompt, type ÒPSTxxÓ where xx is

the release version.

2. The Main Menu screen is displayed.

Notes :

¥ The Main Menu screen shows the basic tasks that

are available. ¥ Move the cursor through the menu choices and

press <Enter> key to select a task.

EXITING THE PROGRAM

1. Press <Esc> key until you find the Main Menu

screen.

2. Select the ÒQUITÓ option on the Main Menu or

press <Alt-X> key, and the PST program is over.

EDITING FIELDS

Once you are in a particular screen, you may want to change a value of any field. A highlighted cursor can be moved to each editable field by using the arrow keys. A field can only be edited if the cursor is on that field (that is, if the field is highlighted.)

1. Begin the editing process by pressing <Enter> key.

2. To accept the new value, press <Enter> key. To about edit mode and return to the old value, press <Esc> key.

3. The value of some field that is fixed types will be changed by just pressing <Enter> key.

See table 5-1 for the list of editing keys.

5-2-2 Operation Procedure

SERVICE PROGRAMMING

The Service Programming screens enable you to set and change the service parameters of the phones, read and write to internal phone book, and transfer phone book data to other phone. There five options listed on the Service Programming Main Menu.

The parameter modification is done on the ÒEdit ParametersÓ screens. The variables found on those screens can be preset from a phone or a previously saved file. Select ÒRead Data from FileÓ or ÒRead Data from PhoneÓ to preset the values.

READ DATA FROM FILE

Use this command to enter the name of a file whose extension is ÒmmcÓ. The values read from the named file will initialize the parameter values seen on the ÒEdit Parameters.Ó

5-2 Samsung Electronics

Product Support Tolls

READ DATA FROM PHONE

Use this command to replace the current programmable parameter values with the values that are currently programmed into the phone. The values are read from the phone that must be properly connected to the PST with power on.

EDIT PARAMETERS

Use this command to edit Number Assignment Module (NAM) items and User Preference (U1) items There are five screens.

1. General Settings: some writable, some read only.

2. Parameters associated with NAM 1.

3. Parameters associated with NAM 2.

4. First User Preferences.

5. Second User Preferences.

Function Keys

SAVE DATA TO FILE

Use this command to save the current parameters in a file. Once you enter a filename, press <Enter> key to write all current parameters to the file.

WRITE ALL TO PHONE

Use this command to write the changed parameter values to the phone. Writing the changed values to the phone may take up to a minute.

Notes :

¥ Some items have dependencies on other items,

and they will be written to the phone together.

¥ If you intend to use this ÒWrite All to PhoneÓ

feature, it is recommended that you do a ÒRead Data from PhoneÓ first, and then make the changes, so that nothing gets inadvertently overwritten.

Esc : Save and Exit

F1 : Displays help message about a selected field.

F6 : Takes you to the General parameters screen.

F7 : Takes you to the NAM 1 parameters screen.

F8 : Takes you to the NAM 2 parameters screen.

F9 : Takes you to the first UI preferences.

F10 : Takes you to the second UI preferences.

Valid & Invalid Data

Upon startup, all items are initialized ÒinvalidÓ. All fields display the question marks instead of data. After reading from a phone or a file, if the question marks still show in a field, then that item has never been written to the phone or saved to the file.

5-3Samsung Electronics

Product Support Tolls

SOFTWARE DOWNLOADER

Use this screen to download new software to the phone. The various windows are displayed to inform the user of the phone data and the progress of download.

The software downloader task of the PST is responsible for downloading a BIN file into the flash memory on the phone. It verifies that the given BIN file is compatible with the target phone, and performs all the protocol necessary to successfully download the file.

To begin a software downloader, use the following procedure.

1. Press <F4> key to choose a BIN file of the new software to be loaded into the phone. An Edit box will pop up asking for BIN file name. Enter full file name or press <Enter> key to see the lists of BIN files in the current directory. Using the arrow key, choose the appropriate BIN file, then press <Enter> key.

SETUP

You can setup SCH-1500 only. Use this screen to choose com.port. you want to setup.

Function keys

SPACE : Scroll through menu.

ENTER : Accepts the phone type chosen.

ESC and ALT-x : Cancel operation and returns to

Main Menu.

QUIT

You can exit the PST program.

2. Press <F8> key to change the mode of the phone from hands-free mode to DM offline mode. This function is to view the software and hardware version of the phone. By setting the phone to DM offline mode, the upper left window should display the phone's data. If the phone fails to change mode, an error sound and message will occur. In that case, please check the power, link, and COM port configuration.

3. Press <ALT-D> key to begin download. Various messages and progress bar will inform the user of the progress of the download.

Caution : DO NOT REMOVE POWER WHILE THE PHONE IS BEING DOWNLOADED !

4. Press <Esc> key to return to Main Menu.

5-4 Samsung Electronics

6. Circuit Description

6-1 Logic Section

6-1-1 Power Supply

With the battery installed on the phone and by pressing the PWR key, the VBATT and ON_SW signals will be connected. This will turn on Q110 (2SC4081BR) and will drive DC-DC converter (U130) to output 5.2V. This in turn will be supplied to regulators (U110 and U120), thus releasing them from the shut-down state to output regulated 3.3V.

The VBATT applied to ON_SW will turn on Q111 (DTC144EE) resulting in the signal ON_SW_SENSE to change state from HIGH to LOW. This will allow MSM to send out PS_HOLD (logical HIGH) to turn on Q110 even after the PWR key is released.

The voltage (+3.3VD) from U120 is used in the digital parts of MSM and BBA. The voltage (+3.3VA) from U110 is used in the analog part of BBA and Audio circuit.

CPU

INTEL 80186 CMOS type 16-bit microprocessor is used for the main processing. The CPU controls all the circuitry. For the CPU clock, 27MHz resonator is used.

FLASH ROM (U106)

One 8 MBIT FROM is used to store the terminal's program. Using the down-loading program, the program can be changed even after the terminal is fully assembled.

SRAM (U107)

One 2 MBIT SRAM is used to store the internal flag information, call processing data, and timer data.

6-1-2 Logic Part

The Logic part consists of internal CPU of MSM, RAM, ROM and EEPROM. The MSM receives TCXO and CHIPX8 clock signals from the BBA and controls the phone during the CDMA and the FM mode. The major components are as follows:

¥CPU : INTEL 80186 core ¥FROM : U126 (MBM29LV800T) - 8MBIT

FLASH ROM

¥SRAM : U127 (KM68U2000LTGI) - 2MBIT

STATIC RAM

¥EEPROM : U113 (AT24C128W) - 128KBIT

SERIAL EEPROM

EEPROM (U108)

One 128 KBIT EEPROM is used to store ESN, NAM, power level, volume level, and telephone number.

KEYPAD

For key recognition, key matrix is setup using SCAN0-6 of STORE signals and KEY0-3 of input ports of MSM. Eight LEDs and backlight circuitry are included in the keypad for easy operation in the dark.

LCD MODULE

LCD module contains a controller which will display the information onto the LCD by 8-bit data from the MSM. It also consists a DC-DC converter to supply -3.5V for fine view angle and LCD reflector to improve the display efficiency.

Samsung Electronics 6-1

Circuit Description

6-1-3 Baseband Part

MOBILE SYSTEM MODEM (MSM)

The MSM equipped with the INTEL 80186 CPU core is an important component of the CDMA cellular phone. The MSM comes in a 176 pins TQFP package. The interface block diagram is shown on page 6-3.

MICROPROCESSOR INTERFACE

The interface circuitry consists of reset circuit, address bus (A0-A19), data bus (AD0-AD15), and memory controls (ALE, DT_R, HWR/, LWR/, RAM_CS/, ROM_CS).

INPUT CLOCK

¥CPU clock: 27 MHz ¥TXCO/4 (pin 34): 4.92 MHz. This clock signal from

the BBA is the reference clock for the MSM except in CDMA mode.

¥CHIPX8 : 9.8304 MHz. The reference clock used

during the CDMA mode.

BBA INTERFACE

ADC Interface

ADC_CLK (pin 3), ADC_ENABLE (pin 1) and ADC_DATA (pin 2) are required to control the internal ADC in the BBA.

Data Port Interface

Includes the UART. Also, supports Diagnostic Monitor (DM) and HP equipment interface.

CODEC Interface

The MSM outputs 2.048 MHz PCM_CLK (pin 19) and 8 KHz CODEC_SYNC (pins 16,20) to the CODEC (U310). The voice PCM data from the MSM (U101) PCM_DIN (pin135) is compressed into 8KHz by QCELP algorithm in the CDMA mode. In FM mode, the data is processed by D_FM.

RF Interface

TX : TX_AGC_ADJ (pin 35) port is used to control the TX power level and PA_ON (pin 44) signal is used to control the power amplifier.

CDMA, FM Data Interface

¥TXIQDATA0-7 (pins 24-32) : TX data bus used

during both CDMA and FM mode.

¥C_RX_IDATA0-3 (pins 16-20) and C_RX_QDATA0-

3 (pins 12-15) : RX data bus used during CDMA mode.

¥FM_RX_IDATA (pin 7) and FM_RX_QDATA (pin

8) : RX data bus used during FM mode.

Clock

¥TX_CLK (pin 22), TX_CLK/(pin 23) : Analog to

Digital Converter (ADC) reference clock used in TX mode.

¥CHIPX8 : ADC reference clock used in CDMA RX

mode.

¥FMCLK : Reference clock in FM RX mode.

RX : AGC_REF (pin 36) port is used to control the RX gain and TRK_LO_ADJ (pin 45) is used to compensate the TCXO clock.

General Purpose I/O Register Pins

Input/output ports to control external devices.

Power Down Control

When the IDLE/ signal turns LOW, only the TX sections will be disabled. If both the IDLE/ and SLEEP/ changes to LOW, all the pins except for the TXCO is disabled.

6-2 Samsung Electronics

ANTENNA

PA_ON

SYNTH_LOCK

TRK_LO_ADJ

TX_AGC_ADJ

RX_AGC_ADJ

RESIN/

XTAL

RESOUT LWR/ HWR/ RD/

DT_R/ PCS6/

RAM_CS/ ROM_CS/ EEPROM_CS/

AD0~AD15 A0~A19

PCM_CLK PCM_SYNC PCM_DIN PCM_DOUT

DP_TX_DATA DP_RX_DATA

KEYSENSE0~4

RINGER

IDLE/

SLEEP/

FM/

C_RX_IDATA0~3

C_RX_QDATA0~3

CHIPX8

FM_RX_IDATA

FM_RX_QDATA

FM_RX_STB

ADC_ENABLE

ADC_DATA

ADC_CLK

FM_RX_CLK

TXCO/4

I_OFFSET, Q_OFFSET TXCLK, TXCLK/ TX_IQDATA0~7

CDMA MODE

FM MODE

RF UNIT

Q5312 CDMA BASEBAND ANALOG 2 (BBA2)

MODE CONTROL SUPPORT

GENERAL PURPOSE INTERFACE

CODEC

AMP

SPK

MIC

KEYPAD

VOCODER CORE

MSM 1. 0 CORE (CDMA PROCESSING)

DFM PROCESSING

GENERAL PURPOSE ADC SUPPORT

RF INTERFACE

MSM2

80186 MICROPROCESSOR CORE

FIFOED SERIAL DATA PORT

EXTERNAL RAM, ROM, EEPROM, DISPLAY & OTHER PERIPHERALS

RINGER

Circuit Description

Figure 6-1 Baseband Block Diagram

6-3Samsung Electronics

Circuit Description

6-1-4 Audio Part

TX AUDIO PATH

The voice signal output from microphone is filtered and amplified by the internal OP-AMP and is converted to PCM data by the CODEC (U310). This signal is then applied to the MSM (U100)'s internal vocoder.

RX AUDIO PATH

The PCM data out from the MSM is converted to audio signal by ADC of CODEC (U310), is then amplified by the speaker amplifier (U330) to be sent to the speaker unit.

FM TX PATH

RX AUDIO PATH

De-Emphasis Circuit

This circuit is 1st LPF featuring -6dB/oct to reduce signal loss and noise in Rx path.

Expander

The expander features 1:2 level to reduce signal loss and noise in Rx path. The zero crossing level of the expander is ±2.9 kHz/dev, attack time is 3 mS, and release time is 13.5 mS.

Volume Adjust

Volume can be adjusted up to 6 steps for the user to obtain a proper loudness of received signal.

Pre-Emphasis Circuit

The circuit features +6dB/oct to reduce signal loss and noise in Tx path.

Compressor

The compressor features 2:1 level to reduce signal loss and noise in Tx path. The zero crossing level of the compressor is ±2.9 kHz/dev, attack time is 3 mS, and release time is 13.5 mS.

Limiter

The limiter performs to cut ±0.53 Vp-p or higher audio signal level so that the FM frequency deviation is not over ±12kHz/dev. The function is used to avoid confusion over phone line. LPF is used to reduce a specific high frequency of limited signal.

6-1-5 TX WBD, ST, And SAT

These signals are generated from MSM. The modulation level of TX WBD and ST is ±8kHz/dev, and SAT is ±2kHz/dev.

6-1-6 Buzzer Driving Circuitry

Buzzer generates alert tone. When the buzzer receives the timer signal from the MSM, it generates alert tone. The buzzer level is adjusted by the alert signal's period generated from the MSM timer.

6-1-7 Key Tone Generator

Ringer signal (pin 49) out from MSM (U100) is passed through 2 serial LPF consisting of R341, C342, R340, and C341, amplified at the speaker amp (U330), and comes out to speaker. In hands-free mode, the key tone is applied to RX audio line through the LPF and C338, R335.

6-4 Samsung Electronics

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