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Ares Communications Technology . , INC

2051P Service manual 1~3 V3.0- .doc

DB-2051P Service Manual

2004/12/17 Page 21 of 90

Confidential Document

9. Load the board into the rear housing

and wedge the hook of the rear housing.

11. Use a T5 starlike

to spin

the fixing screw in and to fix the board
between the front and rear housings.

12.

8. Assemble the MICROPHONE in the rear

housing.

7. Assemble the vibrator in the rear housing.

10. Combine the front and rear housings

from top to bottom after the upper hook
slot of the front and rear housings is
wedged.

Summary of Contents for DB2051P

Page 1: ...Page 1 of 90 Confidential Document Service Manual Level1 3 COPYRIGHT ARES INC THIS NOTICE DOES NOT IMPLY PUBLICATION ARES CONFIDENTIAL PROPRIETARY THIS DRAWING ON THIS PRINT AND INFORMATION THEREWITH...

Page 2: ...Ares Communications Technology INC 2051P Service manual 1 3 V3 0 doc DB 2051P Service Manual 2004 12 17 Page 2 of 90 Confidential Document Record The first edition Update 5 8 Software Upgrade P62...

Page 3: ...le 8 4 Disassembly Assembly 14 4 1 Brief Introduction to Disassembly and Assembly 14 4 2 Recommended Tool 14 4 3 Disassembly Procedures 15 4 4 Exploded Parts Diagram 18 4 5 Parts List for Each Portion...

Page 4: ...l 1 3 V3 0 doc DB 2051P Service Manual 2004 12 17 Page 4 of 90 Confidential Document 1 Introduction 1 1 Brief Introduction 1 2 Reminder of the Safety 1 2 1 For Portable Mobile Phone l l 1 2 2 For Car...

Page 5: ...2 Brief Introduction to DB 2051P 2 1 Appearance of the DB2051P Item Name of the Part Remarks 1 Dust guard cover 2 Battery cover hook 3 Front housing of the phone 4 Battery cover 5 Rear housing of the...

Page 6: ...129hr Charging time Ultra battery Around 2 5 hrs to get a full power Phone book 50 groups of phone book built in the phone 600 groups of phone book embedded in the SIM card 2 Vibrator Vibration while...

Page 7: ...24 channels 374 channels Same as the left item l 1 channels 8 Time Slots TDMA Same as the left item l 200KHz l GMSK BT 0 3 l 270 833kb s l FR 13kbps EFR 13kbps l GSM Phase 2 0 1ppm 0 1ppm l 5 RMS 20 P...

Page 8: ...Ares Communications Technology INC 2051P Service manual 1 3 V3 0 doc DB 2051P Service Manual 2004 12 17 Page 8 of 90 Confidential Document 3 Menu 3 1 Available Menu...

Page 9: ...of 90 Confidential Document 3 1 1 Messages Voice Mail C Off Direct Reply On Off Voice Mail Cell Broadcast On Off Read new CB Topic List New Topic Auto Display On Off Capacity 3 1 2 Records Recent Call...

Page 10: ...ok Calls Family Group Calls Friend Alarm Workmate Message VIP Cell Broadcast Call Alert Vibrator Only Ringer Only Vibrator Ringer Vibrator Then Ringer No Ringer Vibrator Beep Only 3 1 4 Clock Alarm Cl...

Page 11: ...1 5 Settings Key Tones CLick Tone Off Key Lock Auto Key Lock On Off Keypad Lock Now Anykey Answer On Off Auto Answer On Off Connection Alert Tones Vibrator Tones Vibrator IP number setting Restore Ca...

Page 12: ...International Activate Cancel Status Barrings Outgo International Except Home Activate Cancel Status All Incoming Activate Cancel Status All Incoming When Roaming Activate Cancel Status Clear All Wait...

Page 13: ...cap Tank War Settings Sounds On Off Backlight On Calendar On Off Off Vibrator On Off Screen Saver On Bear Night Sun Moon Digital Clock Off 3 1 7 Phone book View Search Name Group Family Friend Workmat...

Page 14: ...precise element easily damaged Determine to wear an anti static wristband fully grounded because many parts in the mobile phone are easily damaged from electrostatic effect No stress on the housings o...

Page 15: ...ce the mobile phone has not been disassembled but asked to be repaired it should be taken apart The following steps will guide you to disassemble the 2051P 1 Open the battery cover 3 Remove the screws...

Page 16: ...V3 0 doc DB 2051P Service Manual 2004 12 17 Page 16 of 90 Confidential Document 10 Take the Vibrator out of the rear housing 9 Take out the keypad 7 Take out the LCD panel 8 Remove the receiver and t...

Page 17: ...Lens panel scraped at the case of disassembly of the housings 3 Hooks are provided at the front and rear housings take care of the hook sites at the case of dissembly Do not put forth your strength o...

Page 18: ...Ares Communications Technology INC 2051P Service manual 1 3 V3 0 doc DB 2051P Service Manual 2004 12 17 Page 18 of 90 Confidential Document 4 4 Exploded Parts Diagram...

Page 19: ...ONGE 1 6 LCD HOLDER 1 7 SCREW NUT 4 8 KEYPAD 1 9 LCD PLATE SPONGE 1 10 INSULATING TAPE 1 11 METAL DOME 1 12 LCD 1 13 LCM TAPE 1 14 RECEIVER SPEAKER 1 15 LCD PLATE 1 16 ANTENNA INTERNAL 1 17 VIBRATOR M...

Page 20: ...Manual 2004 12 17 Page 20 of 90 Confidential Document 4 6 Assembly Procedure 2 Assemble back the receiver to the site as shown in the figure above 1 Assemble back the keypad 3 Load the LCD plate 4 Cer...

Page 21: ...housing and wedge the hook of the rear housing 11 Use a T5 starlike to spin the fixing screw in and to fix the board between the front and rear housings 12 8 Assemble the MICROPHONE in the rear housin...

Page 22: ...t the front and rear housings take care of the hook sites at the case of dissembly Do not put forth your strength on them or otherwise the hooks of the front and rear housings will be cracked 4 At the...

Page 23: ...se by improper use It is generally caused by the user s improper operation or wrong adjustment Several cases are frequently caused as fallows 1 Mechanical damage the phone s part s cracked and or dist...

Page 24: ...malfunctioning mobile phone according to the following process 1 To find out the cause before repair First of all ask the user when the phone failed which fault phenomenon occurred and which irregular...

Page 25: ...ion 8 Check whether the audio frequency signal I O interfaces SIM card ring keypad display panel microphone receiver vibrator and the like work normally 9 Disassemble the phone in order Refer to chapt...

Page 26: ...CD holder LCD plate Microphone Receiver vibrator keypad b Simple manual test instructions Check whether the software version vibrator LCD module buzzer microphone and headphones work normally using th...

Page 27: ...eries of instructions Manual Test Mode Step 1 Input a 80 instruction by way of a keypad When the mobile phone shows a message telling Test Mode ON it means that the phone has entered Test Mode and the...

Page 28: ...regulator of IC6 is correct See the power supply circuit Check IC6 and the related circuit and re solder or replace the relevant part s in worst case N It is allowed to measure TP26 by an oscilloscop...

Page 29: ...e download the phone software N Y Y Y After switch on check whether the phone stays at a vibration mode Check whether the voltage of T1_2 is high Check re solder IC7 R40 and R16 or replace the relevan...

Page 30: ...For the phone able to be switched on Locate the LCM module or check whether LCM Zebra is in good condition for better solution N Measure whether the voltage of TP32 is around 2 65V 1 Check whether the...

Page 31: ...For the phone able to be switched on and set to a call ring mode Check whether the signal of the ring working is set to T7_2 Check whether the circuits related to IC7 and FLASH are well soldered or w...

Page 32: ...The voice from the other side is not clear In the condition of call Check whether a signal is sent to SP1_2 from IC7 Check C88 C85 C86 TG26 and TG25 are not well soldered Re solder or replace the rel...

Page 33: ...side cannot clearly hear the voice During a call Check whether a signal is sent to the terminals of C79 from IC7 Check whether C79 C80 A C80 B C82 C84 A C84 B and R45 are not well soldered Re solder...

Page 34: ...YMPTOM 7 After the phone is switched on the keys get failure At the state of switch on Check Keypad and Metal Doom are well connected to PCB Re stick the Keypad Metal Doom or replace it in worst case...

Page 35: ...age trigger signal in T8_2 is sent from IC7 Check whether IC7 and R44 are not well soldered if any then re solder or replace the relevant part s in worst case Check whether T8 is driven Check whether...

Page 36: ...rating voltage of J4_1 and J4_5 is 2 85V Check whether the output voltage of IC6_21 is 2 85V if not replace IC 6 if yes check whether C89 is in worst case or not well soldered Check whether IC7 has a...

Page 37: ...8kHz Check whether C17 is not well soldered or whether the part is damaged Check whether C78 C81 and XTAL1 are not well soldered if any re solder or replace the relevant part s Check whether the phone...

Page 38: ...er is normal Measure to check whether the charge voltage of TP30 is approximately 5V Check whether J5 is not well soldered if any re solder or replace the relevant part Measure to check whether the ch...

Page 39: ...below Points for Attention 1 At the time of RF testing an Inline mode in DBService is generally selected and a channel ARFCN required Power Level AFC values and RX or TX mode should be set 2 General...

Page 40: ...RX 1 At case of GSM measurement ARFCN 62 947 4MHz Generator RF level 20dBm 2 At case of DCS measurement ARFCN 698 1842 4MHz Generator RF level 20dBm 3 Test probe attenuation 20 dBm TX 1 At case of GSM...

Page 41: ...er the antenna is well installed Check by a spectrum analyzer For GSM whether SW1_8 has a signal as shown in figure 1 or For DCS whether SW1_8 has a signal as shown in figure 2 Check C154 C46 C153 L22...

Page 42: ...ure 5 or for DCS whether IC9_30 and IC9_31 have signals as shown in figure 6 Check C37 L15 and L16 Or C103 L20 and L4 re solder or replace the related part s in worst case Check whether IC9_13 IC9_16...

Page 43: ...RBW 1 MHz VBW 3 MHz SWT 2 5 ms Att 20 dB 1 PK MAXH PRN 120 110 100 90 80 70 60 50 40 30 20 Marker 1 T1 49 48 dBm 947 400000000 MHz 1 Date 27 DEC 2002 14 34 45 Ref 20 dBm Att 20 dB A 7 5 MHz Center 1...

Page 44: ...Ares Communications Technology INC 2051P Service manual 1 3 V3 0 doc DB 2051P Service Manual 2004 12 17 Page 44 of 90 Confidential Document Figure 7 Figure 8...

Page 45: ..._37 is 2 85V and check C60 C57 and so on re solder or replace the part s in worst case Check by a spectrum analyzer For GSM whether IC9_18 and IC9_19 have a signal as shown in figures 11 and 12 or For...

Page 46: ...nal Re solder or replace IC7 N Y Re solder or replace IC5 Check by a spectrum analyzer For GSM whether IC3_7 has a signal as shown in figure 19 or For DCS whether IC3_1 has a signal as shown in figure...

Page 47: ...GSM C151 or DCS C150 re solder or replace the related part s in worst case Y Check by a spectrum analyzer For GSM whether SW1_8 has a signal as shown in figure 24 or For DCS whether SW1_8 has a signal...

Page 48: ...tt 50 dB Center 902 4 MHz Span 25 MHz 2 5 MHz 1 PK MAXH PRN 80 70 60 50 40 30 20 10 0 10 20 Marker 1 T1 19 10 dBm 902 400000000 MHz 1 Date 27 DEC 2002 13 53 26 Figure 11 Figure 12 A Ref 20 dBm Att 50...

Page 49: ...Hz Span 75 MHz RBW 3 MHz VBW 10 MHz SWT 2 5 ms 1 PK MAXH PRN 80 70 60 50 40 30 20 10 0 10 20 Marker 1 T1 20 21 dBm 1 747400000 GHz 1 Date 30 DEC 2002 14 27 08 A Ref 20 dBm Att 50 dB 7 5 MHz Center 1 7...

Page 50: ...Center 1 7475 GHz Span 75 MHz 7 5 MHz 1 PK MAXH PRN 80 70 60 50 40 30 20 10 0 10 20 Marker 1 T1 6 41 dBm 1 747400000 GHz 1 Date 30 DEC 2002 09 29 59 Figure 22 Figure 23 A RBW 1 MHz VBW 3 MHz SWT 2 5...

Page 51: ...0 1 2 Power supply 2303 1 3 Power supply 2304 1 4 Power cable 2 5 Fixture 1 6 Computer 1 7 GPIB card PCI interface 1 8 GPIB cable 3 9 RF cable 1 10 Level shift 20cm 1 11 Dangle used to drive the test...

Page 52: ...e phone is connected with PC 2 Mobile Info IMEI SERIO S W EEPROM Part No Fail ID Station and Fail Value CODE of the phone are shown 3 Mode Function Inline Test Calib MMI and Audio are currently provid...

Page 53: ...tting 5 KEITHLEY 2304A GPIB Address b Test set Address setting 14 CMU 200 GPIB Address c Charger Address setting 6 KEITHLEY 2303A GPIB Address d COM Port setting e Click Init Instrument Check whether...

Page 54: ...librate Function as shown below Menu of the PA Offset Calibration and Rx gain Calibration 1 Calibration Control Switch Calibration Control ON 2 PA Offset Cal Click PA Offset Cal to perform GSM PA Offs...

Page 55: ...u the items will be shown as follows Menu of the AFC Calibration 1 Calibration Control Switch Calibration Control ON 2 AFC Cal Click AFC Cal to perform AFC Calibration 3 AFC parameter Transmit Power T...

Page 56: ...90 Confidential Document 2 ADC Calibration to calibrate the battery of the phone Menu of the ADC Calibration 1 Calibration Control Switch Calibration Control ON 2 ADC Cal Click ADC Cal to perform ADC...

Page 57: ...transformed or that a gap clearly caused between the battery after loaded and the rear housing so the transformed rear housing or the malfunctioned battery jack of rear housing should be replaced If...

Page 58: ...Ares Communications Technology INC 2051P Service manual 1 3 V3 0 doc DB 2051P Service Manual 2004 12 17 Page 58 of 90 Confidential Document...

Page 59: ...if the phone s function recovers it is known that the former receiver was in poor condition If the faults are still not solved using the methods above it is possible that PCB has something wrong Plea...

Page 60: ...n bad condition The vibrator is not fixed in place so it hits the rear housing when rotating so as to produce noises Pull out the vibrator re load it on the rear housing and check with instructions wh...

Page 61: ...10 The battery is unable to be charged LEVEL PROBABLE CAUSE VERIFICATION AND REMEDY 1 Battery in bad condition Load a normal battery into the phone After the battery is charged using a charger if it...

Page 62: ...ng IMEI Label FCT Label and DSN Label from the rear housing and then stick them on the new rear housing Before you tear off the labels heat them a bit using an air gun in order to prevent the labels f...

Page 63: ...above l Print Port Dongle or USB Dongle l Ares Download Cable Level Shifter 2 Connection Method 1 At the time of use of the Print Port Dongle 2 At the time of use of the USB Dongle PC x 1 PrintPort Do...

Page 64: ...l 2004 12 17 Page 64 of 90 Confidential Document 3 File Location Master Program Location A model data file clip to store the config file and the parameter setting file mdl of each model Master Program...

Page 65: ...5 2062 and 2063 It indicates that the calibration state is checked or not at the case of upgrade 0 check 1 check To set an item to be kept an additional function of V2 5 If the predetermined item requ...

Page 66: ...up file clip of which the file name is Serial number and the sub file name is eep and after the erase step if the download is failed you can click this backup to renew the value in the static eep of t...

Page 67: ...Select a model 2 Select a method of Download 3 Select a COM Port of the transmission line 4 Select a fls file location of the downloaded software 5 Select an eep file location of the downloaded softwa...

Page 68: ...pgraded to that of 2049_04 11 00M4 version including M4 and 2051_04 11 00M3 version including M3 above the DBTEL Service center utility must be used before the software is updated to read the IMEI cod...

Page 69: ...Ares Communications Technology INC 2051P Service manual 1 3 V3 0 doc DB 2051P Service Manual 2004 12 17 Page 69 of 90 Confidential Document 8 Click the icon to power off the phone at Test mode...

Page 70: ...resent in the model data file clip 4 In the backup menu 1 Select a model 2 Select a piece of data to read from the phone 3 Select an item for a backup 4 Click Browse to determine the path of the store...

Page 71: ...able to the phone from PC 5 Make sure that there is a cfg file corresponding to former software for the phone in the model data file clip and a cfg file corresponding to the later software for the pho...

Page 72: ...rder to make the settings of the phone be present in an initial state Notes 1 Make sure of the model 2 Make sure that there is a mdl file in the model data file clip 3 Make sure of the com port of the...

Page 73: ...Communications Technology INC 2051P Service manual 1 3 V3 0 doc DB 2051P Service Manual 2004 12 17 Page 73 of 90 Confidential Document In the download menu booting key to start programming Download i...

Page 74: ...ROM Default value of the new version of software and update the calibrated value in EEPROM if you want to update the phone software and further to keep the calibrated value of the phone you can select...

Page 75: ...2004 12 17 Page 75 of 90 Confidential Document Notes 1 Make sure of the model 2 Make sure that there is a mdl file in the model data file clip 3 Make sure that there is a config file cfg of the origi...

Page 76: ...ep if the download is failed you can click this backup to renew the value in the original static eep of the phone 7 Before updating the software remember to read the IMEI code from the phone using the...

Page 77: ...data if the download is failed 1 Re download once the software Flash EEP_Default to be updated but partially the last failed eep file must be selected in the EEP_Backup data file clip for EEPROM Load...

Page 78: ...ownload do not power on the phone the eep file of EEP_Backup is that of the software before updated so you must again execute flash EEP_Calibrated Download once for updating the software and at this t...

Page 79: ...Confidential Document 3 After the download is OK the recovery of failed data and the software upgrade are completed Select a fls file of the software to be updated Select an eep file of the new softwa...

Page 80: ...ect or the default value may be wrong and some functions are abnormal 6 Before updating the software remember to read the IMEI code from the phone using the DBTEL Service center utility software 7 Bef...

Page 81: ...t yet been written to Hidden Zone Operation Flow Backup IMEI Update S W Restore IMEI Backup IMEI a Have the phone enter Test Mode b Use a version of Fastload or ServiceLoad with a Dongle v2 7 above To...

Page 82: ...ice Manual 2004 12 17 Page 82 of 90 Confidential Document 4 Select a Backup Read IMEI from phone 5 Tick off an IMEI item 6 Click Start button to backup Determine a Com port Select a Backup Read IMEI f...

Page 83: ...Ares Communications Technology INC 2051P Service manual 1 3 V3 0 doc DB 2051P Service Manual 2004 12 17 Page 83 of 90 Confidential Document 7 Poweroff MS...

Page 84: ...c DB 2051P Service Manual 2004 12 17 Page 84 of 90 Confidential Document SW upgrade 1 Use Fastload or ServiceLoad to upgrade the software Select Flash EEP_Calibrated 3 After the download is successful...

Page 85: ...d have the phone enter Test mode b ClickMenu Backup c 1 Select a path of the backup file to be recovered and determine the file name 2 Determine a Com port 3 Select Restore write IMEI to phone from fi...

Page 86: ...Ares Communications Technology INC 2051P Service manual 1 3 V3 0 doc DB 2051P Service Manual 2004 12 17 Page 86 of 90 Confidential Document Restore is successful 6 power off MS...

Page 87: ...al Document Attachment 1 Newly added Flash types supported by ServiceLoad V2 5 An additional Key is provided SECOND_FLASH CS3 or CS2 can be set in a PIN section of the mdl file Newly added Flash ID SA...

Page 88: ...at the data cannot be restored as a result of a wrong definition of Header of the backup file but ServiceLoad V2 6 will make a correction If you want to upgrade the preserved data of 2056 series some...

Page 89: ...ow in order to perform the test for trouble shooting 1 The entire phone s functions check Observe the performance of the entire phone Verify by calling and answering a call whether the call functions...

Page 90: ...ow in order to perform the test for trouble shooting 1 The entire phone s functions check Observe the performance of the entire phone Verify by calling and answering a call whether the call functions...

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