Sony SPP-M920 Primary Service Manual Download | Manualshive

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Adjustments Location :

ATE TERMINAL

ATE GND

SP BAT

CHIG ATE

ATE RX

ATE TX

QUAD-TUNE

ATE EN

MCU PWR

RX PWR

RX LOOP V

TX LOOP V

TX PWR

12 11 10

9

8

7

6

5

4

3

2

1

RX LOOP V : Digital voltmeter

QUAD-TUNE : Digital voltmeter

TX LOOP V : Digital voltmeter

[BASE MAIN BOARD] (SIDE B)

R97 : TX DEVIATION Adjustment

C88 : RX LOOP VOLTAGE Adjustment

C87 : QUAD-TUNE VOLTAGE Adjustment

C49 : TX LOOP VOLTAGE Adjustment

C120 : 18.25MHz CLOCK REFERENCE Adjustment

[BASE MAIN BOARD]
(SIDE A)

IC8

IC1

IC12

IC13

IC23

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Summary of Contents for SPP-M920 Primary

Page 1: ...MICROFILM SPP M920 SPECIFICATIONS CORDLESS TELEP0HONE US Model SERVICEMANUAL ...

Page 2: ... of IC Terminals 26 6 2 Block Diagrams 29 6 3 Printed Wiring Boards Base Key Section 35 6 4 Schematic Diagram Base Key Section 37 6 5 Schematic Diagram Base Unit Section 42 6 6 Printed Wiring Boards Base Unit Section 47 6 7 Printed Wiring Boards Handset Section 52 6 8 Schematic Diagram Handset Section 55 7 EXPLODED VIEWS 7 1 Base Unit Section 58 7 2 Handset Section 59 8 ELECTRICAL PARTS LIST 60 SA...

Page 3: ...utton LINE 2 FLASH button LCD panel Antenna 1 LINE 1 lamp 2 LINE 1 FLASH button 3 MUTE button 4 LINE 2 lamp 5 LINE 2 FLASH button 6 INTERCOM button 7 OFF button 8 VOLUME button 9 L1 RINGER ON OFF button º L2 RINGER ON OFF button VOLUME button BASE UNIT INTERCOM lamp Speaker Antenna MUTE lamp POWER lamp CHARGE lamp SPARE BATTERY lamp ª DIAL MODE PULSE TONE º HOLD button CONF button OPEN c Spare Bat...

Page 4: ... 4 This section is extracted from instruction manual ...

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Page 11: ...Note Follow the disassembly procedure in the numerical order given Battery pack BP T23 Lid Battery pack 1 2 Hand cabinet Rear Hand cabinet Front 3 3 2 4 2 1 Screws BTP 3x12 2 1 BATTERY PACK REMOVAL 2 2 HAND CABINET REAR REMOVAL ...

Page 12: ... Tube Antenna ANT1 Hand main board Hand main cabinet Front Switch Rubber key VOL 2 7 8 Holder Antenna 1 Screws BTP 2x6 3 Screw BTP 3x12 4 Screws P 2x8 5 Screw BTP 3x12 6 Screw P 3x8 2 3 ANTENNA REMOVAL 2 4 HAND MAIN BOARD REMOVAL ...

Page 13: ...udio signal It is important to note that the synthesizer prescaler IC only operates up to 500MHz The VCO s therefore oscillate at roughly 450MHz The 900MHz signals needed for the transmit and receive sections are generated from the second harmonic of the VCO frequencies The following section will outline the transmit frequencies used as well as the corresponding LO frequency which is used for the ...

Page 14: ...The antenna is not matched to 50Ω and requires a simple microstrip matching network to achieve this If a network analyzer is attached to the BFA connector after disconnecting the duplexer the antenna match may be measured In order to achieve a good 50Ω match one must be careful not to obstruct the antenna as any object near the antenna will affect its impedance 2 1 2 Duplexer The Duplexer ensures ...

Page 15: ...he 925 928MHz band has 25dB attenuation This filter is used for the RX filter in the handset or the TX filter in the base The high band filter characteristic is shown below This filter is used for the handset TX filter and base RX filter 902 905MHz Passband 925 928MHz Reject Band 1015 815 10dB div 0dB 925 928MHz Passband 902 905MHz Reject Band 1015 815 10dB div 0dB ...

Page 16: ...er The function of the mixer is to combine the incoming signal with a LO signal in order to convert the desired signal to the 10 7MHz IF frequency The mixer used for this task is a dual gate FET CF739R The LO and RF signals are placed on the gates of the FET and the IF signal is coupled off of the drain The FET provides conversion gain along with adequate power handling characteristics Both the RF...

Page 17: ...A coneector required to guarantee less then 50mV meter radiated field strength measured at 3meters 2 3 2 TX VCO The basic operation of the TX VCO is the same as the RX VCO except for one detail The TX VCO is also FSK modulated by the transmit data through a second varactor in the tank 25kHz peak to peak The data is first filterd and then the amplitude is adjusted through TBD to set the deviation o...

Page 18: ... a reset unless serviced by software 6 Wakeup Timer The wakeup timer is a multivibrator controlled by external passive components to effect a low power periodic wakeup for call detection 7 Interrupt Controller The interrupt controller structures the various interrupts for manageable service by the microcontroller 8 Clock Generator The clock generator creates required internal timing signals from t...

Page 19: ... test mode is ignored with no subsequent key beep OFF key Exit test mode immediately A slightly longer than normal key beep will indi cate that this in occurring Normal handset start up display blank then channel scanning message until channel found HOLD key LCD segment test When the key is pressed there is a key beep All pixel seg ments of all the LCD alphanumeric display are enabled for as long ...

Page 20: ...e level Standard volume control operation as in product specification Standard volume display as per product specification VOL Volume Down key Decrease the user audio volume level Standard volume control operation as in product specification Standard volume display as per product specification Power Cycle Test mode access is not affected by removing and restoring power to the hand set When power i...

Page 21: ...ULSE switch on the bottom of the unit The CHARGE LED will be illuminated and the LINE 1 LED will blink at a slow rate On entering test mode these will be the start up conditions Rx and Tx cannel will be set to the default channel num ber five Tx power will be turned off Rx power will be turned on Line one RF module audio paths will be enabled speak erphone audio paths will be disabled VOLUME Volum...

Page 22: ...er frequency 903 5MHz Modulation 1kHz Deviation 25kHz Output level 70dBm EMF 2 Connect the digital voltmeter to QUAD TUNE ATE terminal 3 Adjust the C87 for 1 2V 0 75V reading on the digital voltme ter 3 18 25MHz CLOCK REFERENCE Adjustment Procedure 1 Connect the frequency counter to IC8 pin 2 Adjust the C120 for 18 25MHz 750Hz reading on the frequency counter 5 TX DEVIATION Adjustment Procedur e 1...

Page 23: ...11 10 9 8 7 6 5 4 3 2 1 RX LOOP V Digital voltmeter QUAD TUNE Digital voltmeter TX LOOP V Digital voltmeter BASE MAIN BOARD SIDE B R97 TX DEVIATION Adjustment C88 RX LOOP VOLTAGE Adjustment C87 QUAD TUNE VOLTAGE Adjustment C49 TX LOOP VOLTAGE Adjustment C120 18 25MHz CLOCK REFERENCE Adjustment BASE MAIN BOARD SIDE A IC8 IC1 IC12 IC13 IC23 ...

Page 24: ...2 Connect the digital voltmeter to RX LOOP V ATE terminal 3 Adjust the C88 for 1 2V 0 2V reading on the digital voltmeter 5 TX DEVIATION Adjustment Procedur e 1 Connect the modulation meter to ANTENNA point 2 Adjust the R114 for DEVIATION 17kHz 1 5kHz reading on the modulation meter 6 TX power and TX frequency Confirmation Procedur e 1 Connect the modulation meter to ANTENNA point 2 Confirm the TX...

Page 25: ...data input terminal 24 CAR DET I Carrier frequency detect terminal 25 CAS DET I CAS signal detection terminal of CID CW 26 RING DET1 I Ringer signal detection terminal of line 1 27 RING DET2 I Ringer signal detection terminal of line 2 28 LINE DROP1 I Line drop external off hook detect terminal for line 1 29 LINE DROP2 I Line drop external off hook detect terminal for line 2 30 FST CHG O Charge cu...

Page 26: ...SS4 Digital power supply terminal Ground 62 XTAL1 I System clock oscillator input 18 25MHz 63 XTAL2 O System clock oscillator output 18 25MHz 64 DVCC4 Digital power supply terminal 3V 65 SCLK O Serial clock output to the EEPROM IC11 and PLL IC2 66 SD IN I Serial data input from EEPROM IC11 67 SD OUT O Serial data output to EEPROM IC11 and PLL IC2 68 CS O Chip select output to the EEPROM IC11 69 PL...

Page 27: ... output terminal 19 COL 3 O Key matrix scan output terminal 20 COL 4 O Key matrix scan output terminal 21 DVSS1 Digital power supply terminal Ground 22 DVCC1 Digital power supply terminal 3V 23 ON CARD I Charge ON detect terminal 24 Not used Open 25 ATE EN I ATE enable input 26 LCD RESET O Reset signal output to the LCD driver SED1235 27 CS O Chip select output to the LCD driver SED1235 28 A0 O Ad...

Page 28: ... supply terminal Ground 57 PLL REF O 18 25MHz PLL reference frequency output 58 WAKE UP I Activation input for intermittent reception Stand by cancellation input 59 INT 0 Not used Open 60 INT 1 Not used Open 61 DVSS4 Digital power supply terminal Ground 62 XTAL1 I System clock oscillator 18 25MHz 63 XTAL2 O System data oscillator 18 25MHz 64 DVCC4 Digital power supply terminal 3V 65 SCLK O Serial ...

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Page 37: ...C2 ANT2 1 1 667 523 11 BASE KEY BOARD 2 1 771 244 11 SWITCH RUBBER KEY BASE 3 3 018 755 01 BUTTON 3 KEY 4 3 018 756 01 BUTTON 6 KEY 5 3 018 758 01 LENS 3 LED 6 3 011 484 01 CLAW LOCK 7 3 012 608 01 SPRING 8 3 018 761 01 TERMINAL CHARGE BASE 9 3 011 482 01 SPRING LEAF 10 3 011 483 01 KNOB BATTERY CASE LID 11 3 011 408 11 LID BASE BATTERY CASE 12 3 014 498 01 CABINET UPPER BASE 13 3 011 485 11 HOOK ...

Page 38: ... 57 3 012 611 01 SHEET RECEIVER 58 3 372 738 01 GASKET RECEIVER 59 3 012 336 01 CASE FRONT SHIELD 60 1 771 041 11 SWITCH SHEET VOL 61 1 665 380 11 HAND VOL BOARD 62 A 3672 317 A BASE MAIN BOARD COMPLETE 63 3 012 337 11 CASE REAR SHIELD 64 3 012 329 01 HOLDER ANTENNA 65 1 771 037 11 SWITCH RUBBER KEY VOL 66 3 012 318 11 CABINET REAR HAND 67 3 012 316 11 LID BATTERY CASE 68 3 012 339 01 TERMINAL BAT...

Page 39: ...5 50V C15 1 162 908 11 CERAMIC CHIP 3PF 0 25PF 50V C16 1 162 923 11 CERAMIC CHIP 47PF 5 50V C17 1 162 908 11 CERAMIC CHIP 3PF 0 25PF 50V C18 1 162 907 11 CERAMIC CHIP 2PF 0 25PF 50V C19 1 162 907 11 CERAMIC CHIP 2PF 0 25PF 50V C20 1 162 923 11 CERAMIC CHIP 47PF 5 50V C21 1 162 923 11 CERAMIC CHIP 47PF 5 50V C22 1 162 908 11 CERAMIC CHIP 3PF 0 25PF 50V C23 1 164 004 11 CERAMIC CHIP 0 1uF 10 25V C24...

Page 40: ...uF 20 16V C127 1 164 004 11 CERAMIC CHIP 0 1uF 10 25V C128 1 162 912 11 CERAMIC CHIP 7PF 0 5PF 50V C129 1 165 176 11 CERAMIC CHIP 0 047uF 10 16V C130 1 126 791 11 ELECT 10uF 20 16V C131 1 136 193 11 FILM 0 47uF 5 250V C132 1 164 227 11 CERAMIC CHIP 0 022uF 10 25V C133 1 164 227 11 CERAMIC CHIP 0 022uF 10 25V C134 1 164 004 11 CERAMIC CHIP 0 1uF 10 25V C135 1 162 919 11 CERAMIC CHIP 22PF 5 50V C136...

Page 41: ...DIODE BAS16 D37 8 719 047 37 DIODE BAS16 D38 8 719 047 37 DIODE BAS16 FILTER F1 1 233 888 11 FILTER BAND PASS F2 1 233 889 11 FILTER BAND PASS F3 1 767 454 11 FILTER SAW F4 1 567 107 71 FILTER CERAMIC F5 1 760 785 11 FILTER CERAMIC VIBRATOR F6 1 567 487 11 OSCILLATOR CERAMIC IC IC1 8 759 459 06 IC MC13156DWR2 IC2 8 759 459 05 IC LMX2337MX IC3 8 719 821 66 IC PHOTO COUPLER TLP627 IC4 8 759 487 95 I...

Page 42: ... 11 METAL GLAZE 75 5 1 16W R34 1 216 810 11 METAL CHIP 120 5 1 16W R35 1 218 285 11 METAL GLAZE 75 5 1 16W R36 1 216 833 11 METAL CHIP 10K 5 1 16W R37 1 218 653 11 METAL CHIP 24 0 50 1 16W R38 1 216 675 11 METAL CHIP 10K 0 5 1 10W R39 1 216 679 11 METAL CHIP 15K 0 5 1 10W R40 1 216 627 11 METAL CHIP 100 0 5 1 10W R41 1 216 817 11 METAL CHIP 470 5 1 16W R42 1 216 823 11 METAL CHIP 1 5K 5 1 16W R43 ...

Page 43: ... R170 1 216 833 11 METAL CHIP 10K 5 1 16W R171 1 216 812 11 METAL CHIP 180 5 1 16W R172 1 218 292 11 METAL GLAZE 20K 5 1 16W R173 1 218 272 11 METAL GLAZE 5 1K 5 1 16W R174 1 218 763 11 METAL CHIP 300K 0 50 1 10W R175 1 216 694 11 METAL CHIP 62K 0 5 1 10W R176 1 216 864 11 METAL CHIP 0 5 1 16W R178 1 218 345 11 METAL GLAZE 9 1K 5 1 16W R179 1 216 833 11 METAL CHIP 10K 5 1 16W R180 1 218 292 11 MET...

Page 44: ...R289 1 216 833 11 METAL CHIP 10K 5 1 16W R290 1 216 833 11 METAL CHIP 10K 5 1 16W R291 1 216 833 11 METAL CHIP 10K 5 1 16W R292 1 216 831 11 METAL CHIP 6 8K 5 1 16W R293 1 218 272 11 METAL CHIP 5 1K 5 1 16W R294 1 216 845 11 METAL CHIP 100K 5 1 16W R296 1 216 852 11 METAL CHIP 390K 5 1 16W R297 1 216 845 11 METAL CHIP 100K 5 1 16W R298 1 216 845 11 METAL CHIP 100K 5 1 16W R1000 1 247 855 11 CARBON...

Page 45: ... C76 1 164 245 11 CERAMIC CHIP 0 015uF 10 25V C77 1 164 315 11 CERAMIC CHIP 470PF 5 50V C78 1 164 217 11 CERAMIC CHIP 150PF 5 50V C79 1 164 217 11 CERAMIC CHIP 150PF 5 50V C80 1 162 916 11 CERAMIC CHIP 12PF 5 50V C81 1 162 910 11 CERAMIC CHIP 5PF 0 25PF 50V C82 1 162 910 11 CERAMIC CHIP 5PF 0 25PF 50V C83 1 107 823 11 CERAMIC CHIP 0 47uF 10 16V C84 1 107 826 11 CERAMIC CHIP 0 1uF 10 16V C85 1 162 ...

Page 46: ... 16W R15 1 216 821 11 METAL CHIP 1K 5 1 16W R16 1 216 847 11 METAL CHIP 150K 5 1 16W R17 1 216 823 11 METAL CHIP 1 5K 5 1 16W R18 1 216 037 00 METAL CHIP 330 5 1 10W R19 1 218 653 11 METAL CHIP 24 0 50 1 16W R20 1 218 653 11 METAL CHIP 24 0 50 1 16W R21 1 216 815 11 METAL CHIP 330 5 1 16W R22 1 216 817 11 METAL CHIP 470 5 1 16W R23 1 216 797 11 METAL CHIP 10 5 1 16W R24 1 216 802 11 METAL GLAZE 27...

Page 47: ...ETAL CHIP 1K 5 1 16W VARIABLE RESISTOR R114 1 238 661 11 RES ADJ CERMET 1K TX DEVIATION SPEAKER SP1 1 505 593 11 SPEAKER 2 8cm VIBRATOR X1 1 767 458 11 VIBRATOR CRYSTAL 18 25MHz 1 665 380 11 HAND VOL BOARD 1 771 041 11 SWITCH SHEET VOL MISCELLANEOUS 2 1 771 244 11 SWITCH RUBBER KEY BASE 53 1 771 042 11 SWITCH SHEET HAND 54 1 771 038 21 SWITCH RUBBER KEY HAND 60 1 771 041 11 SWITCH SHEET VOL 65 1 7...

Page 48: ...S Model Page INCORRECT CORRECT Ref No Part No Description Remark Ref No Part No Description Remark 68 Indicates corrected portion 1 696 453 21 CORD WITH MODULAR PLUG LINE 15cm 1 696 454 11 CORD WITH MODULAR PLUG LINE 215cm ECN CP800994 Sony Corporation Personal Mobile Communication Company 98L0413 1D Printed in Japan 1998 12 Published by Quality Assurance Dept 9 925 736 91 ...

Page 49: ...bile Communication Company 98C0213 1D Printed in Japan 1998 3 Published by Quality Assurance Dept Before change After change Ref No Part No Description Remark Part No Description Remark IC11 8 759 540 48 IC NM93C46LM8 ID910B IC13 8 759 540 47 IC NM93C86LM8 ID910H Subject ELECTRICAL PARTS LIST r ELECTRICAL PARTS LIST Service Manual see page 62 67 ...

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