Samsung SCH-611 Service Manual

SERVICE

CDMA Cellular Phone

SCH-611

Manual

CDMA Cellular Phone CONTENTS

1. General Introduction

2. Specification

3. Installation

4. NAM Programming

5. Product Support Tools

6. Troubleshooting

7. Exploded view and its Part List

8. Electrical Parts List

9. Block diagram

10. PCB diagrams

11. Circuit diagrams

©Samsung Electronics Co.,Ltd. Oct. 99

Printed in Korea. Code No.: GH68-00668A BASIC.

ELECTRONICS

1. General Description

The SCH-611 cellular phone functions as digital cellular phone working in CDMA(Code Division Multiple Access) mode. CDMA type digital mode applies DSSS (Direct Sequential Spread Spectrum) mode which first came to be used in the military. The DSSS reduces channel cross talk and allow to use one frequency channel by multiple users in the same specific area, resulting in increase of channel capacity to about ten times compared to that of analog mode currently used. Soft/Softer Handoff, Hard Handoff, and Dynamic RF Power Control technologies are combined into this phone to reduce the call drop while usage. CDMA digital cellular network consists of MSO (Mobile Switching Office), BSC (Base Station Controller), BTS(Base Station Transmission System), and MS (Mobile Station). MS meets the specifications of the below:

• IS-95A : Mobile Station-Base Station Compatibility Standard for Dual-Mode Wideband Spread Spectrum Cellular System

• IS-96A : Speech Service Option 1 Standard for Dual-Mode Wideband Spread Spectrum Cellular Systems

• IS-98A : Standards for Dual-Mode Wideband Spread Spectrum Cellular Mobile Station

• IS-126 : Mobile Station Loopback Service Options Standard

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1-1

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2-1

2. Specification

2-1 General

Frequency Range Digital Mode Transmitter : 824 ~ 849 MHz Receiver : 869 ~ 894 MHz

Channel Spacing : 1.23 MHz Number of Channels : 20 FA Duplex Spacing : 45 MHz Frequency Stability : ±2.5 ppm (-30˚C ~ +60˚C, -4˚F ~ +140˚F) Operating Temperature : -30˚C~+60˚C (-4˚F ~ +140˚F) Operating Voltage

HHP : 3.6V DC (±10%) Hands-free : 13.7V DC (±10%)

Operating Time

Digital Mode

Item Size Weight (g) including slim battery 105 x 45 x 18 89 including standard battery 105 x 45 x 21 120 including extended battery 105 x 45 x 24 138

Item Standby Time Talk Time slim battery up to 40 hours up to 80 hours standard battery up to 75 hours up to 150 hours extended battery up to 120 hours up to 240 hours

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2-2

Specification

2-2 Digital Mode

Waveform Quality 0.944 or more Time Reference ±1uS or less Rx Sensitivity and Dynamic Range -104 dBm, FER=0.5 % or less

-25 dBm, FER=0.5 % or less Tx Output Power 280 mW (24.5 dBm) Tx Frequency Deviation ±300 Hz or less Occupied Band Width 1.32 MHz Tx Conducted Spurious Emission 900 kHz : -42 dBc / 30 kHz below

1.98 MHz: -54 dBc / 30 kHz below

Minimum Tx Power Control below -50 dBm

-25 dBm: -57.0 dBm ~ -38.5 dBm

Open Loop Power Control -65 dBm: -17.5 dBm ~ + 1.5 dBm

-104 dBm: +18.0 dBm ~ +30.0 dBm

Standby Output Power below -61 dBm

Test1: ±24 dB or less

Test2: 0 mS ~ 2.5 mS

Colsed Loop Tx Power Control Range Test3: ±24 dB or more

Test4: ±24 dB or more Test5: ±24 dB or more

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2-3

Specification

2-3 CDMA Debug Display Information (menu 8)

IN IDLE MODE

IN CONVERSATION MODE

1 : Sxxxxx : SID (System ldentification) toggle

Nxxxxx : NID (Network Identification) toggle 2 : SIx : Slot cycle index (lowest between the system and the phone will be used) 3 : Handset Status : 0 - Acquisition

1 - Synchronization 2 - Paging (Idle) 3 - Traffic Initialization 4 - Traffic Mode

5 - Exit 4 : T-xx : Tx adjust, Value ranges from +63 ~ -63dB 5 : Dxxx : sector power in dBm 6 : -xx : Ec/Io 7 : Pxxx : PN offset 8 : CHxxxx : channel number 9 : TEx : Tx vocoder rate (8 is full rate, 1 is 1/8th rate)

E : EVRC

V : 13k or 8k 10 : REx : Rx vocoder rate (8 is full rate, 1 is 1/8th rate) 11 : xx : Walsh code used in traffic channel

1253

Sxxxx

TEx T-xx Dxxx -xx

CHxxxxPxxx

REx xx x

T-xx Dxxx -xx

CHxxx

Pxxx

SIx x

91011

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3-1

3. Installation

3-1 Installing a Battery Pack

1. To attach the battery pack after charging, align it with the phone about 1cm (1/2 inch 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. 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 (1/2inch and lift it away from the phone.

Press this button to release the battery pack

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3-2

Installation

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 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.

Figure 3-1 Charging the Phone and Battery

SPECIFICATIONS USING “DTC 61AB”

Product Charging time (hours) Stand by time (hours) Talking time(min)

Front Rear Digital Digital Slim Battery Pack (Li-ion: 500mAh) 2 2 40 80 Standard Battery Pack (Li-ion: 1000mAh) 2 2 75 150 Extended Battery Pack (Li-ion: 1600mAh) 2.5 6 120 240

Item Model Name Service Part# Desk Top Rapid Charger DTC61AB GH44-00063A Slim Battery Pack BTI61AB GH43-00023A Standard Battery Pack BTS61AB GH43-00022A Extended Battery Pack BTE61AB GH43-00021A

SLIM BATTERY PACK

STANDARD BATTERY PACK

EXTENDED BATTERY PACK

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3-3

Installation

3-3 For Mobile Mount

3-3-1 Cradle

1. Choose a location where it is easy to reach and does not interfere with the driver’s 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

3-3-2 Hands-Free Box

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

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

HANDS FREE BOX

CELLULAR PHONE

CRADLE

CLAM SHEEL MOUNT UPPER

CLAM SHEEL MOUNT LOWER

FIXED SCREW

CAR

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3-4

Installation

3-3-3 Hands-Free Microphone

1. It is recommended to install the microphone where it is 30-45 cm (12-18inch 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 1 Installation

MOUNTING BRACKET

Yellow(Ignition)

Micro Phone

White(Stereo Mute) Red(Vehicle Battery) Black(GND)

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3-5

Installation

3-3-4 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 the power cable as follows: Connect the red wire to the battery (+) terminal, black wire to the vehicle chassis. Then connect the battery (-) terminal to the vehicle chassis. Connect the yellow wire to the switched side of the ignition switch, and then connect the white to the stereo mute wire from your vehicle stereo.

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, in the vehicle, 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.

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 digits.

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

4-1 General Setup

LCD Display Key in Function

47 869#08#9 -selects NAM programming NAM program 1 -choose ‘GENERAL’ 1:General 2:Setup NAM1 3:Setup NAM2

ESN Volume ▼ -Electronic Serial Number of the phone is displayed

E9031F77

CAI version Volume ▼ -Common Air Interface version is displayed

VOC8/13/EVRC

SO_VOIC_EVRC Volume ▼ -Vocoder Rate

SCM Volume ▼ -Station Class Mark displays the power class,

00101010 transmission, slotted class, dual mode.

Lock Code Lock code, current ststus is displayed

0000 4-digit code -to change, enter new code.

OK -store it

Slot Mode Slot mode. ‘Yes’ indicates the slot mode.

Yes or # -changes the status.

OK -store it.

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

2 0-7 -to change, enter new one.

OK -store it.

Pref NAM(1~4)... Preferred system selection for NAM(1~4). Digital only o r # Up to four NAMs are allowed for the phone. This lists

OK one of the four NAMs and allows you to program

CDMA settings.

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4-1

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4-2

NAM Programming

4-2 Setting Up NAM1

LCD Display Key in Function

NAM Program 2 -Choose ‘Setup NAM1.’ 1:General 2:Setup NAM1 3:Setup NAM2

Setup NAM1 1 -Choose ‘Phone #’ 1:Phone # 2:CDMA

Phone # -directory number

1234567890 Phone number -to change, enter new one.

OK -store it.

Mobile ID # -Phone number currently used.

1234567890 Phone number -to change, enter new one.

OK -store it.

Setup NAM1 2 -choose ‘CDMA’ 1:Phone # 2:CDMA

IMSI_MCC IMSI Moble Country Code, current code is displayed.

000 number -to change, enter new one.

OK -store it.

IMSI_MNC IMSI Mobile Network Code, current code is displayed.

00 number -to change, enter new one.

OK -store it.

CDMA pref.. Preferred system selection, current system is displayed.

A only or # -changes the system.

OK -store it.

CDMA ACCOLC CDMAAccess Overload Class, current status is displayed.

0 class number -to change, enter new one.

OK -store it.

Pchn Sys A Preferred channel currently used under system A

779 channel number -to change, enter new one.

OK -store it.

Pchn Sys B Preferred channel currently used under system B

779 channel number -to change, enter new one.

OK -store it.

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4-3

NAM Programming

LCD Display Key in Function

Schn Sys A Second channel currently used under system A

738 channel number -to change, enter new one.

OK -store it. Schn Sys B Second channel currently used under system B

738 channel number -to change, enter new one.

OK -store it.

CD Acq SID 1 1st Acquisition system ID, current status is displayed.

0 ID number -to change, enter new one.

OK -store it.

CD lockSID 1 1st lock system ID,current status is displayed.

0 ID number -to change, enter new one.

OK -store it.

CDMA Home SID CDMA Home system ID, current status is displayed

Yes or # -changes the status.

OK -store it.

CDMA fSID CDMA foreign SID, current status is displayed.

Yes or # -changes the system.

OK -store it.

CDMA fNID CDMA foreign NID, current status is displayed.

Yes or # -changes the system.

OK -store it.

SID #1 first SID written in the list, current status is displayed.

2222 number -to change, enter new one.

OK -store it.

NID #1 first NID written in the list, current status is displayed.

1 number -to change, enter new one.

OK -store it.

SID #2 2nd SID written in the list, current status is displayed.

2222 number -to change, enter new one.

OK -store it.

NID #2 2nd NID written in the list, current status is displayed.

2 number -to change, enter new one.

OK -store it.

SID #3 3rd SID written in the list, current status is displayed.

2222 number -to change, enter new one.

OK -store it.

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4-4

NAM Programming

4-3 Setting Up NAM 2, 3, 4

The NAM 2, 3, 4 setup program is the same as ‘4-2 Setting Up NAM1’.

LCD Display Key in Function

SNID #3 3rd SID written in the list, current status is displayed.

3 number -to change, enter new one.

OK -store it. SID #4 4th SID written in the list, current status is displayed.

2222 number -to change, enter new one.

OK -store it. NID #4 4th NID written in the list, current status is displayed.

15 number -to change, enter new one.

OK -store it.

Setup NAM1 LCD returns to the NAM1 setup mode. 1:Phone # 2:CDMA

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5-1

5. Product Support Tools

5-1 General

IMPORTANT INFORMATION Purpose

The Product Support Tool (PST) offers you the ability to interface with the SAMSUNG CDMA telephone using a PC. With this tool you can program the phones network system requirements and functionality, swap phone data, and download software upgrades. This document supports UniPST version 1.xx.

NOTE: This software must be executed in the Windows95/98 mode.

EQUIPMENT REQUIRED

Make sure you have the following equipment setup:

1. Minimum PC configuration: 586 CPU, 16MB RAM, Windows95/98, 5MB of disk space free for software upgrade.

2. PST Software with appropriate cable (DM Cable for SAMSUNG CDMA phone).

3. Serial Port (16550 Serial Interface Card).

4. Power Supply (3.8 V) or Battery

INST

ALLATION

Software

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

2.Create an appropriate directory on the C:\ drive for PST software, Execute Setup.exe file,

The installation program creates folder and task bar on the windows95/98 start bar.

SAMSUNG CDMA Phone

The serial port should be configured to COM1 or COM2. Use the following procedure to connect the phone, cable, and PC . Plug the female end of the DM Cable into the 16550 card. Pull the black rubber connector away from the socket at the base of the phone. Plug the special connector on the cable into the socket at the base of the phone.

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5-2

Product Support Tools

5-2. PST (Product Support Tool)

5-2-1 Getting Started

MAIN MENU SCREEN

1. At the Windows95/98, Double Click “UniPst.exe”.

2. The Main Menu Screen will be displayed. The Main Menu Screen shows the basic tasks that are available.

CAUTION: DO NOT attempt to program phone with a low battery.

PST SETUP

UniPst supports SAMSUNG CDMA portable telephone. You can select serial port COM1 or COM2.

5-2-2 Operation Procedure

Service Programming The Service Programming screens enable you to set and change the service activation parameters of the phones. These items can be changed individually or as a group via the “Edit Items” Property Sheet of the PST. There are several pages on the Service Programming Property Sheet (See below Figure).

Read Data from File

Click “open” icon to select the name of a file whose extension is “mmc”. The values will be read from the named file, and will initialize the parameter values seen on the Service programming screen

Read Data from Phone

Click Read from the Phone icon to upload the current programmable parameters of the phone. The values are read from the phone, so the phone must have the power ON and be properly connected to the PST.

NOTE: To actually view the data you need to go to the Edit Items screens.

Edit Items

Click this icon to edit Number Assignment Module (NAM) items or UI items.

There are two types of screens:

1. Parameters associated with a particular Number Assignment Module (NAM)

2. UI items settings

Phone Book

Click this icon to edit Phone Book. While you edit cell, you can use <Enter> and < UP , DOWN,LEFT,LIGHT Arrow> and <SPACE> key. If you want to edit phone number or name , you must move rectangle box to cell where you want to edit , Write it down . if <UP and DOWN Arrow> key is pressed, the cursor moves to next cell or previous cell.

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5-3

Product Support Tools

Save Data to File

Click this icon to save the current parameters to a file. Once you enter a filename, Click <OK> button to write all current parameters to that file. This way the same information can be downloaded into multiple phones.

Write to Phone

Click this icon to write the selected parameter values to the phone. Writing the selected values to the phone may take up to a minute. If there are dependencies in a field you can make all the changes in the proper fields and download the information all together. If you intend to use this “Write to Phone” feature, it is recommended that you do a “Read Data from Phone” first, and then make the changes, so that nothing gets inadvertently overwritten.

NOTE: DO NOT TOUCH THE PHONE WHILE WRITING IS IN PROGRESS.

Software Download and Upgrade Screen

To begin a software upgrade or download, perform the following steps:

1. From the main menu screen choose DOWNLOAD MODE? Click open icon to choose a BIN file of the new software to be loaded. Choose the appropriate BIN file, then Click <Open> (see below figure).

2. Click Download? to begin downloading the file. You will notice various messages and a progress bar that informs the user what percentage of the downloading has already occurred.

3.Click Mode Select box, then Select SERVICE MODE?to return to the Service Mode Screen.

NOTE: DO NOT POWER OFF WHILE THE PHONE IS BEING DOWNLOADED!

Test Jig

5-3 TEST PROCEDURE

5-3-1 Configuration of Test

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5-4

Product Support Tools

ITEMS PARTS # REMARK RF test Cable GH39-00002A

Test cable GH39-30516A DM Cable GH39-30525A Test JIG GH80-10502A Including (RF Interface Pack Ass’y) 1. Power Cable(Black,Red)

2. 9-pin RS232 data Cable

❈ CAUTION : Because there is the loss (0.33V at Max Power) of the test jig and Data cable, you’d better input

3.93V to the DC Power Supply to use 3.6V (Battery normal voltage) at Cellular phone

Items needed to purchase from SAMSUNG

Spectrum Analyzer

HP8924C

RF In

In/Out

Audio

Out

Audio

Directional

Coupler

To A-Out

To A-In

DC Power Supply

(+3.93V)

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5-5

Product Support Tools

5-3-2 List of Equipment

- DC Power Supply

- Test Jig

- Test Cable

- CDMA Mobile Station Test Set HP8924C, HP83236A, CMD-80, etc

- Spectrum Analyzer(include CDMATest Mode) HP8596E

TEST CABLE

TEST JIG

AUDIO SELECT LEFT : AUDIO IN RIGHT : AUDIONOFF

DC POWER INPUT POR

T CHANGE VOLTAGE LEVEL BY MODEL (3.8VDC) RED: + BLACK: GND

D89 CONNECTOR CONNECT TO IBM PC SERIAL PORT

BJ1

1 CONNECTOR CONNECT TO HP SERIAL PORT

NOT USED

CONNECT TO AUDIO IN PORT OF TEST EQUIPMENT (USE BNC CABLE)

CONNECT TO AUDIO OUT PORT OF TEST EQUIPMENT (USE BNC CABLE)

DB25 CONNECT

OR CPMMECT TO DB25 CONNECTOR OF TEST CABLE

UP: AUTO POWER ON DOWN: NOT USE

AUTO

A-OUT

A-IN PROBE

HHP I/F TEST JIG

T E S T

P A C K

A-IN - DC3.8v +

TO_PC

TO_HP

TEST CABLE CONNECTIONS

1 MHC 172 2 RF CABLE (1.4 dB Loss) 3 BNC CONNECTOR (RF) 4 PLUG CONNECT TO SCH-611 5 DATA CABLE 6 Dsub 25PIN CONNECTOR (DATA)

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5-6

Product Support Tools

Dsub 25 PIN CONNECTOR PIN DESCRIPTION (TEST CABLE 1, BACK SIDE)

DATA DESCRIPTION Dsub CONN. DATA DESCRIPTION Dsub CONN.

PIN NO. PIN NO.

V_F 12,21 DP_RX_DATA 8

DGND 2,4,6,13,19 HP_PWR 9

BATT 15,16,22 RI 10

C_F 3,20 CD 11

TX_AUDIO 5 RTS 14

DP_TX_DATA 7 CTS 17

RX_AUDIO 1 DTR 18

15 17 19 21 23 25

14 16 18 20 22 24

246810

1357911 1312

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5-7

Product Support Tools

5-4. CONVERSION TABLE OF FREQUENCY vs CHANNEL

T Y P E CHANNEL CONVERSION EQUATION REMARK TX 1 ≤ N≤ 799 F=0.03 ✕ N + 825.00 FREQUENCY 990 ≤N≤1023 F=0.03 ✕ (N-1023) + 825.00 RX 1 ≤N≤ 799 F=0.03 ✕ N + 870.00 FREQUENCY 990 ≤N≤1023 F=0.03 ✕ (N-1023) + 870.00

Change to Test Mode

A. To change the phone’s state from Normal Mode to Test Mode, You should enter the following keys.

“ 7 5 9 # 8 1 3 5 8 0 “

B. The command “0 1” is Suspend.

C. To finish the Test Mode, You should enter the command “0 2”.

Channel Selection and Tx Power Output Level Control (Digital Mode)

A. Enter to Test Mode ( 7 5 9 # 8 1 3 5 8 0 ).

B. “0 1” : Suspend.

C. “0 9 0 3 6 3 #” : Set to ‘0363’ channel.

D. “0 7” : Carrier On.

E. “3 4” : Spread spectrum to 1.23MHz bandwidth.

F. “7 1 2 7 5 #” : Output RF power level setting.

“275” means AGC level and AGC level range is from 0 to 511.

N ; CH NUMBER F ; FREQUENCY

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6-1

6. Troubleshooting

6-1 Logic Section

6-1-1 No Power

Check the signal from the battery

terminal to U 105 pin 1.

Check U105 and its neighboring

circuits.

Check U106 and its neighboring

circuits.

Check U211 and its neighboring

circuits.

Press button

U208 pin 13=3.6V?

U210 pin 4 input

=4V?

U210 pin 5 output

=3.7V?

U107 pin 5 output

=3.7V?

END

Yes

END/

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6-2

Troubleshooting

6-1-2 Abnormal Initial Operation (Normal +3.3V source)

TCXO CLK

applied to U401 pin 26?

Check TCXO output,

R400 and C400.

Replace if required.

Check U401 and its meighboring

circuit. Replace if required.

Check U109, MSM and its

neighboring circuits.

Check ‘H’ level input from J104

pin 17 to U401 pin 79.

replace if required.

Check Q125 and its neighboring

circuit. Replace if required.

Check the LCD pins and its

neighboring circuit.

Replace if required.

TCXO CLK signal output

from U401 pin 29?

RAM-CS signal output

from U109 pin 44?

CHIPX8 CLK signal output

from U401 pin 52?

Alert LED ON?

Normal initial

display on LCD?

END

Yes

Press button

END/

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6-3

Troubleshooting

6-1-3 Abnormal Backlight Operation

Press and button on the phone

‘H’ level output from

U101 L7 to J105 pin 19?

‘H’ level input to

U139 pin 4,5?

Normal U139 operation?

Normal EL?

EL ON

Check EL.

Replace if required

Check U139, L201, Q139

and its neighboring circuits.

Replace if required

Check FPC.

Replace if required

Check U101 L7.

Replace if required

Yes

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6-4

Troubleshooting

6-1-4 Abnormal Key Data input

Check initial status

Scanning signals

output from U101, C5, B4, D5, A5

C6, A5, D6

Check U101

Check U101 A2, A3, C4, B5, E5

Check J103

Normal key data input?

Replace the key pad assembly

END

Yes

+ 60 hidden pages

Samsung SCH-611 Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual