Philips CT6558 Tuning Up Procedure & Operational Manual
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Philips CT6558 Tuning Up Procedure & Operational Manual

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PHILIPS
Tuning Up procedure & Operational Manual
1.0 Objective
This document outlines
2.0 Scope
1. Used for radio trouble shooting in factory.
Used for radio trouble shooting in customer service
2.
3.0 Definition of terms
Nil
4.0 Responsibility
Nil
5.0 Detail procedure
5.1
General description............................................................................
5.11 Product Overview......................................................................
5.12 Product technical parameters ......................................................
5.2
CT6558 Signal Flow Overview........................................................
5.21 Receiver Principle and troubleshooting............................................
5.22 Transmitter Principle and troubleshooting.........................................
5.23 Logic circuit Principle and troubleshooting.......................................
5.3
Exploded view and figures.....................................................................
6.1
CPU (OM6357-7).............................................................................
6.2
PMU (PCF50603).............................................................................
6.3
Tranceiver (UAA3537HN)...................................................................
6.4
PA&PAC IC (SKY77324)....................................................................
6.5
CAMERA IC (BU1594GS)..................................................................
6.6
MEMORY (M36L0R7050T0ZAQT/STM)................................................
6.7
MELODY IC (ML2864)......................................................................
6.8
CHARGE IC (UBA2008).....................................................................
CONTENT
the trouble shooting for the CT6558
1
Revision
:
Date
:2004-9-7
Page No.
: Page 1 of 1
.
.
01

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  • Page 1: Table Of Contents

    Page No. : Page 1 of 1 CONTENT 1.0 Objective This document outlines the trouble shooting for the CT6558 2.0 Scope 1. Used for radio trouble shooting in factory. Used for radio trouble shooting in customer service 3.0 Definition of terms 4.0 Responsibility...

  • Page 2: General Description

    General description 5.11 Product overview: CT6558 product is new model phone designed by CECW, it works at Tri-band, EGSM、DCS and PCS band CT6558 is a more powerful product, with 300,000 pixels camera its weight is only 85g, the size is...

  • Page 3: Ct6558 Signal Flow Overview

    200KHz 200KHz band width Channel 975-1023,0-124 512-885 512-810 Modulation GMSK,BT=0.3 GMSK,BT=0.3 GMSK,BT=0.3 TX/RX channel 45MHz 95MHz 80MHz space Fn=890.2+(N-1)*0.2 Fn=1850.2+(N-512)*0.2 (Fn)Freq. Fn=1710.2+(N-512)*0.2 Unit: MHz EGSM calculating Unit: MHz Fn=880.2+(N-975)*0.2 formula N: Channel No. Unit: MHz 5.2 CT6558 Signal Flow Overview:...
  • Page 4 Revision PHILIPS Date :2004-9-7 Tuning Up procedure & Operational Manual Page No. : Page 4 of 4...
  • Page 5 Revision PHILIPS Date :2004-9-7 Tuning Up procedure & Operational Manual Page No. : Page 5 of 5 RF Connector SAW Filter Tranceiver RF Switch PA&PAC Backup Battery 26M oscillator Bat. Conn. 32K oscillator MIDI IC IRDA Charger IC SIM Conn.

  • Page 6: Receiver Principle And Troubleshooting

    Revision PHILIPS Date :2004-9-7 Tuning Up procedure & Operational Manual Page No. : Page 6 of 6 Blue backlight Hall IC 5.2.1 Receiver principle and troubleshooting CT6558 RX signal flow chart(Figure 1)： Antenna 7010 7130...
  • Page 7 I&Q Receiver 7300 Figure 1 1.CT6558 downlink signal flow from Antenna to RF-Connector： From Antenna RF-Connector The aerial signal mobile phone received go from antenna to RF Connector。 RF Connector, which is a special parts developed for RF test. By connecting U501 and RF cable to spectrum analyzer, you can measure the signal.
  • Page 8 Revision PHILIPS Date :2004-9-7 Tuning Up procedure & Operational Manual Page No. : Page 8 of 8 RF Switch Following is the relative controlling signal status : 3. The RX signal output from RF_SW, flowing to relative SAW Filter, then go through Balun circuit , input to tranceiver.
  • Page 9 Revision PHILIPS Date :2004-9-7 Tuning Up procedure & Operational Manual Page No. : Page 9 of 9 EGSM For example:(EGAM, 925-960Mhz) SAW Filter (EGSM) 4. 7130 is the main IC in RF circuit, which response for signal modulation and demodulation. Signal input in 7130 after pass BPF, Signal pass LNA, then mix with local signal (RF-VCO) get the -100Khz signal.
  • Page 10 Revision PHILIPS Date :2004-9-7 Tuning Up procedure & Operational Manual Page No. : Page 10 of 10 IQ Down mixer Channel Filter The receiver consists of two distinct parts, the RF receiver front-end and IF section. The RF front-end amplifies the EGSM/DCS/PCS aerial signal, converts the chosen channel down to a low IF of –100kHz,and provides in addition more than 35dB image suppression.
  • Page 11 Revision PHILIPS Date :2004-9-7 Tuning Up procedure & Operational Manual Page No. : Page 11 of 11 Receiver Trouble shooting to receiver circuit 1． We separate the failures in 3 parts: Logic failure, receiver failure and transmission failure. First we need define the failure according to the failed item then we begin the analysis in detail.
  • Page 12 Revision PHILIPS Date :2004-9-7 Tuning Up procedure & Operational Manual Page No. : Page 12 of 12 RF Connector RF Switch Connect to Antenna Step2: Measure the output signal from 7010 to check if the signal is right, EGSM signal: measured from pin 7 (Measure at 2011);...

  • Page 13: Transmitter Principle And Troubleshooting

    Revision PHILIPS Date :2004-9-7 Tuning Up procedure & Operational Manual Page No. : Page 13 of 13 Step3: Measure the input signal and output signal of BPF. If the input signal is wrong, check on 2011: EGSM and 2015: DCS, 2014:PCS. If the output signal is wrong , check the filter 5010：EGSM，5014：DCS, 5012:PCS: 2014 Measure I/Q signal output from 7130.
  • Page 14 Revision PHILIPS Date :2004-9-7 Tuning Up procedure & Operational Manual Page No. : Page 14 of 14 1. Micphone to CPU (7300): Audio signal input from Micphone , Micphone convert the voice signal to analog signal and input to CPU (7300).
  • Page 15 Revision PHILIPS Date :2004-9-7 Tuning Up procedure & Operational Manual Page No. : Page 15 of 15 2. Then the I/Q signal modulate in 7130. The transmitter is fully differential using a direct-up conversion architecture. It consists of a single side band power up mixer. The fully-integrated VCO and the power mixer are designed to achieve LO suppression, quadrature phase error, quadrature amplitude balance and low noise floor specifications.
  • Page 16 Revision PHILIPS Date :2004-9-7 Tuning Up procedure & Operational Manual Page No. : Page 16 of 16 Balun Circuit DCS/PCS 4.TX signal flow through balun circuit, then input to PA&PAC IC. DCS/PCS PA&PAC IC 5. Tx signals output from PA, flow through RF-SW, RF-Connector to antenna.
  • Page 17 Revision PHILIPS Date :2004-9-7 Tuning Up procedure & Operational Manual Page No. : Page 17 of 17 RF-Switch TX circuit troubleshooting: Key parameter of Tx circuit is “Freq. error”, “MAX POWER”, “TX-CURRENT”, “PA table”, etc. Following is normal analysis of the circuit, according to failed item to do more analysis.

  • Page 18: Logic Circuit Principle And Troubleshooting

    Revision PHILIPS Date :2004-9-7 Tuning Up procedure & Operational Manual Page No. : Page 18 of 18 Tranceiver RF connector RF Switch PA&PAC IC Step5: Measure the input signal and output signal of RF-SWITCH (7010). Also need check and control signal of 7010 .
  • Page 19 Revision PHILIPS Date :2004-9-7 Tuning Up procedure & Operational Manual Page No. : Page 19 of 19 D. After resetting CPU, the basic turning on information read from ROM inside will be sent out by TXD0 pin, these codes will be sent to connector, if connector is connected with PC Sever by I/O CABLE, PC Sever will send back a reply code by RXD0 pin to CPU, Radio hand in PC successfully.
  • Page 20 Revision PHILIPS Date :2004-9-7 Tuning Up procedure & Operational Manual Page No. : Page 20 of 20 No hand free function: Check the soldering issue of component. Check Audio PA 7200,whether CS,US CD. Check Speaker, LCD FPC, otherwise change them.
  • Page 21 Revision PHILIPS Date :2004-9-7 Tuning Up procedure & Operational Manual Page No. : Page 21 of 21 Check SIM card issue: Check whether the SIM card can work Check no soldering issue to SIM connector. Check the good contact between SIM card and the connector Check if the power signal is correct.
  • Page 22 Revision PHILIPS Date :2004-9-7 Tuning Up procedure & Operational Manual Page No. : Page 22 of 22 No back light： 1．Check back light and Resistance。 2．Check voltage of BLVDD，if it is abnormal, change 7400。 3．Check T602,T601 and relative parts, otherwise change it。...
  • Page 23 Revision PHILIPS Date :2004-9-7 Tuning Up procedure & Operational Manual Page No. : Page 23 of 23 charging function figure：...
  • Page 24 Revision PHILIPS Date :2004-9-7 Tuning Up procedure & Operational Manual Page No. : Page 24 of 24 5.3 Figure: 5.3.1 Product exploded view: 5.3.2Defect description abbreviation: 冷焊 CS（Cold Solder） 多余焊锡 ES（Excess Solder） 元件歪斜 SP（Skewed Part） 连焊 SS（Solder Short） 元件翘起 TP （Tombstone Part） 元件移动...

  • Page 25: Referrence

    Revision PHILIPS Date :2004-9-7 Tuning Up procedure & Operational Manual Page No. : Page 25 of 25 6 Reference CT6558 main IC introduction: 6.1 CPU (OM6357-7) 7300：...
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  • Page 34: Pmu (Pcf50603)

    Revision PHILIPS Date :2004-9-7 Tuning Up procedure & Operational Manual Page No. : Page 34 of 34 6.2 PMU (PCF50603)
  • Page 35 Revision PHILIPS Date :2004-9-7 Tuning Up procedure & Operational Manual Page No. : Page 35 of 35 7400：POWE-SIM-MANAGEMENT...
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  • Page 42: Tranceiver (Uaa3537Hn)

    Revision PHILIPS Date :2004-9-7 Tuning Up procedure & Operational Manual Page No. : Page 42 of 42 6.3 Transceiver (UAA3537HN)
  • Page 43 Revision PHILIPS Date :2004-9-7 Tuning Up procedure & Operational Manual Page No. : Page 43 of 43...
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  • Page 45 Revision PHILIPS Date :2004-9-7 Tuning Up procedure & Operational Manual Page No. : Page 45 of 45 6.4 PA&PAC (SKY77324)
  • Page 46 Revision PHILIPS Date :2004-9-7 Tuning Up procedure & Operational Manual Page No. : Page 46 of 46...
  • Page 47 Revision PHILIPS Date :2004-9-7 Tuning Up procedure & Operational Manual Page No. : Page 47 of 47 6.5 CAMERA &LCD CONTROL IC(...
  • Page 48 Revision PHILIPS Date :2004-9-7 Tuning Up procedure & Operational Manual Page No. : Page 48 of 48...
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  • Page 53: Memory (M36L0R7050T0Zaqt/Stm)

    Revision PHILIPS Date :2004-9-7 Tuning Up procedure & Operational Manual Page No. : Page 53 of 53 6.6 MEMORY (M36L0R7050T0ZAQT/STM)

  • Page 54: Melody Ic(Ml2864)

    Revision PHILIPS Date :2004-9-7 Tuning Up procedure & Operational Manual Page No. : Page 54 of 54 6.1.7 MELODY IC(ML2864)
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  • Page 58 Revision PHILIPS Date :2004-9-7 Tuning Up procedure & Operational Manual Page No. : Page 58 of 58 6.1.8 Charge Management IC(UBA2008) Features：...
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