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Sony SPP-A985 Service Manual

2-line cordless telephone
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SERVICE MANUAL
Ver 1.0 2000.12
General
Frequency band
902 - 928 MHz
Operating channel
30 channels
Dial signal
Tone, 10 PPS (pulse) selectable
Supplied accessories
Telephone line cords (3)
Handset AC power adaptor (AC-T128)
Wall bracket for base unit
Base unit
Rechargeable battery pack (BP-T23)
Belt clip
Handset
Power source
Rechargeable battery pack BP-T23
Battery charging time
Approx. 12 hours
Battery life
Standby: Approx. 7 days
Talk: Approx. 7 hours
Dimensions
3
1
13
Approx. 2
⁄
x 7
⁄
x 1
⁄
inches (w/h/d), antenna excluded
8
2
16
(approx. 58 x 177 x 46 mm)
7
Antenna: Approx. 2
⁄
inches
8
(approx. 72 mm)
Mass
Approx. 9.5 oz
(approx. 270 g), battery included
SPP-A985
SPECIFICATIONS
Base unit
Power source
DC 9V from AC power adaptor
AC-T131
Battery charging time
Approx. 24 hours
Dimensions
Approx. 7
3
⁄
x 2
8
(approx. 186 x 68 x 229 mm)
Antenna: Approx. 4
(approx. 120 mm)
Mass
Approx. 1 lb 8 oz
(approx. 664 g), wall bracket excluded
Answering machine
Maximum recording time
About 15 minutes, using incorporated IC
Greeting message
Up to 90 seconds per each
Incoming and Memo message
Up to 4 minutes per message
Design and specifications are subject to change without notice.
2-LINE CORDLESS TELEPHONE
US Model
3
⁄
x 9
1
⁄
inches (w/h/d), antenna excluded
4
8
3
⁄
inches
4

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  • Page 1 SPP-A985 SERVICE MANUAL US Model Ver 1.0 2000.12 SPECIFICATIONS General Base unit Frequency band Power source 902 - 928 MHz DC 9V from AC power adaptor Operating channel AC-T131 30 channels Battery charging time Dial signal Approx. 24 hours Tone, 10 PPS (pulse) selectable...

  • Page 2: Table Of Contents

    MARK !ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS 5-2. Base Unit Section ............50 LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE 6. ELECTRICAL PARTS LIST ........51 PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.
  • Page 3 SECTION 1 This section is extracted from GENERAL instruction manual. – 3 –...
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  • Page 18: Disassembly

    SECTION 2 DISASSEMBLY The equipment can be removed using the following procedure. Handset H/S Rear “RF unit ASSY, hand”, Hand main board Base unit Base bottom Base main board RF unit ASSY, base Base key board, LCD board Note : Follow the disassembly procedure in the numerical order given. 2-1.

  • Page 19: Base Bottom

    2-3. BASE BOTTOM 2 +BVTP 3x12 6 Base bottom 3 +BVTP 3x12 1 +BVTP 3x12 4 Claw 5 Claw 2-4. BASE MAIN BOARD 1 +BVTP 3x12 3 Remove the solders. (Base RF unit) (11places) 4 Remove the solders. (Baseb key board) (32places) 7 Base main board 5 Remove the solders.

  • Page 20: Rf Unit Assy, Base

    2-5. RF UNIT ASSY, BASE 1 BVTP 3x12 3 B 2x10 2 BVTP 3x12 4 RF unit ASSY, base 2-6. BASE KEY BOARD, LCD BOARD 1 +BTP 2.6x8 2 Speaker bracket 3 +BTP 2.6x8 5 LCD board 4 +BTP 2.6x8 5 Base key board 4 +BTP 2.6x8 6 Remove the solders (2 places)

  • Page 21: Electrical Adjustments

    SECTION 3 ELECTRICAL ADJUSTMENTS BASE UNIT 3. Check the 18.4 MHz Frequency Error Procedure: 1. Test Mode 1. Enter the Test Mode. [Entering the Test Mode] 2. Connect the frequency counter to the test point J1 on the RF While pressing the [INTERCOM ] key, turn the power ON, then unit.
  • Page 22 I TAD UNIT 1. Test Mode [Entering the Test Mode] While pressing the [ERASE] and [MAIL BOX 1] keys at turn the power When enter the test mode, the 7-segment LED display will be lighted up, i.e. “88” will be shown on the display. [Releasing the Test Mode] Turn the power OFF.

  • Page 23: Handset

    HANDSET 2. Adjustment Equipment and Connection frequency counter 1. Test Mode [Entering the Test Mode] 1. Press the [PGM ] key, then displayed “DIRECTORY AREA RINGER” on the LCD. 2. Press the [*], [*], [8], [3], [7], [8] keys, then displayed on the LCD as below.

  • Page 24: Diagrams

    SPP-A985 SECTION 4 DIAGRAMS 4-1. BLOCK DIAGRAM – BASE UNIT SECTION – • Signal Path BASE MAIN BOARD ANT3001 TELESCOPIC ANTENNA : TX (To Tel Line) BASE RF UNIT (BU) : RX (From Tel Line) TEL AMP U6001 RX AUDIO...

  • Page 25: Block Diagram- Handset Section

    SPP-A985 4-2. BLOCK DIAGRAM – HANDSET SECTION – ANT1001 HELICAL ANTENNA HAND MAIN BOARD SYSTEM CONTROL U1001 RF UNIT (HS) 64 PLL REF PLL REF DSIN RX AUDIO U1005 TXDATA TX DATA SPEAKER ADIN2 RSSI GPIO2/MON2 PLL EN SER DATA OUT...

  • Page 26: Schematic Diagram - Base Main Board (1/2)

    SPP-A985 4-3. SCHEMATIC DIAGRAM – BASE MAIN BOARD (1/2) – Refer to page 48 for IC Block Diagrams. Refer to page 47 for Notes. Refer to page 47 for Waveforms. – 29 – – 30 –...

  • Page 27: Schematic Diagram - Base Main Board (2/2)

    SPP-A985 4-3. SCHEMATIC DIAGRAM – BASE MAIN BOARD (2/2) – Refer to page 48 for IC Block Diagrams. Refer to page 47 for Notes. Refer to page 47 for Waveforms. – 31 – – 32 –...
  • Page 28 SPP-A985 4-5. PRINTED WIRING BOARDS – BASE MAIN BOARD (1/2)– Refer to page 47 for Notes. Semiconductor Location BASE MAIN BOARD (SIDE A) Ref. No. Location D1001 D1011 R3016 R3004 R3002 D1012 C3032 R3049 C3047 C3048 D1015 C3033 R3062 D1016...
  • Page 29 SPP-A985 4-6. PRINTED WIRING BOARDS – BASE MAIN BOARD (2/2) – Refer to page 47 for Notes. S3001 DIAL MODE Semiconductor BASE MAIN BOARD (SIDE B) Location Ref. No. Location D1006 S3002 EC6001 D1007 D1008 EC3037 EC3027 EC3050 LTMTH EC3034...
  • Page 30 SPP-A985 4-7. PRINTED WIRING BOARDS – BASE KEY BOARD (1/2) – BASE KEY BOARD (SIDE A) ANSWER ON/OFF VOL+ CALL WAITING/ ERASE REC/MEMO REDIAL/PAUSE SPEED DIAL INTERCOM FLASH VOL– QUICK SKIP SPEAKERPHONE MAIL BOX PLAY/STOP BASE MAIN BOARD SLOW J3008...
  • Page 31 SPP-A985 4-8. PRINTED WIRING BOARDS – BASE KEY BOARD (2/2) – Refer to page 47 for Notes. BASE KEY BOARD (SIDE B) ANSWER ON/OFF INTERCOM LCD MODULE BOARD I-TAD BOARD MAIL BOX3 Semiconductor Location Ref. No. Location MAIL BOX1 MAIL BOX2...

  • Page 32: Schematic Diagram - Base Key Board

    SPP-A985 4-9. SCHEMATIC DIAGRAM – BASE KEY BOARD – Refer to page 48 for IC Block Diagrams. Refer to page 47 for Notes. Refer to page 47 for Waveforms. – 41 – – 42 –...

  • Page 33: Printed Wiring Board - Hand Main Board

    SPP-A985 4-10. PRINTED WIRING BOARDS – HAND MAIN BOARD – Refer to page 47 for Notes. Semiconductor Location Ref. No. Location S1003 HAND MAIN BOARD (SIDE A) D1001 LTMTH D1002 D1003 D1004 D1006 LCD1001 D1023 S1035 S1032 S1029 S1023 S1038...

  • Page 34: Schematic Diagram – Hand Main Board (1/2)

    SPP-A985 4-11. SCHEMATIC DIAGRAM – HAND MAIN BOARD (1/2) – Refer to page 48 for IC Block Diagrams. Refer to page 47 for Notes. Refer to page 47 for Waveforms. – 45 – – 46 –...

  • Page 35: Schematic Diagram - Hand Main Board (1/2)

    4-12. SCHEMATIC DIAGRAM – HAND MAIN BOARD (2/2) – Note on Printed Wiring Boards: Waveforms • X : parts extracted from the component side. – BASE UNIT SECTION – • x : parts extracted from the conductor side. • : parts mounted on the conductor side. •...

  • Page 36: Handset Section

    IC Block Digrams – BASE UNIT SECTION – U3007 CAT93C86S – HANDSET SECTION – U1006 CAT93C86S INSTRUCTION DECODER, CONTROL LOGIC AND CLOCK INSTRUCTION GENERATORS 7 NC REGISTER ADDRESS 6 ORG REGISTER HIGH VOLTAGE GENERATOR PROGRAM DECODER EEPROM ARRAY 16384 BIT TIMER IOF 1024 &...
  • Page 37 SECTION 5 EXPLODED VIEWS NOTE : • -XX, -X mean standardized parts, so they • The mechanical parts with no reference may have some difference from the original number in the exploded views are not one. supplied. • Items marked “ * ”are not stocked since they •...

  • Page 38: Base Unit Section

    5-2. BASE UNIT SECTION ANT3001 (including U3006 J1003, 1004 J1002, 1005 Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark * 51 A-3673-152-A BASE MAIN BOARD, COMPLETE A-3649-146-A RF UNIT ASSY, BASE 7-685-648-79 SCREW +BVTP 3X12 TYPE2 IT-3 4-356-741-21 SCREW, TAPPING (BIND 2X8) 3-044-144-01 TERMINAL BOARD, ANTENNA 3-220-214-01 BASE BOTTOM...

  • Page 39: Electrical Parts List

    SECTION 6 BASE KEY BASE MAIN ELECTRICAL PARTS LIST NOTE : • Due to standardization, replacements in the • SEMICONDUCTORS In each case, u : µ , for example : The components identified by mark 0 parts list may be different from the parts or dotted line with mark 0 are critical uA..
  • Page 40 BASE MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark C3003 1-107-826-11 CERAMIC CHIP 0.1uF C6020 1-163-038-00 CERAMIC CHIP 0.1uF C3005 1-163-038-11 CERAMIC CHIP 0.1uF C3007 1-163-038-11 CERAMIC CHIP 0.1uF C6021 1-117-370-11 CERAMIC CHIP 10uF C3008 1-162-916-11 CERAMIC CHIP 12PF <...
  • Page 41 BASE MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark Q3003 8-729-026-07 TRANSISTOR MMBT3906LT1 R3016 1-216-833-11 METAL CHIP 1/16W Q6001 T-941-615-31 TRANSISTOR MMBT3904LT1 R3019 1-216-813-11 METAL CHIP 1/16W Q6002 T-941-615-31 TRANSISTOR MMBT3904LT1 R3022 1-216-813-11 METAL CHIP 1/16W Q6003 T-941-615-31 TRANSISTOR MMBT3904LT1...
  • Page 42 BASE MAIN HAND MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R6026 1-216-845-11 METAL CHIP 100K 1/16W C1014 1-163-038-11 CERAMIC CHIP 0.1uF R6027 1-216-098-00 METAL CHIP 110K 1/10W R6028 1-216-098-00 METAL CHIP 110K 1/10W C1015 1-163-038-11 CERAMIC CHIP 0.1uF R6030...
  • Page 43 HAND MAIN I TAD Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark D1034 8-719-077-35 DIODE BB555 R1095 1-216-864-11 METAL CHIP 1/16W R1100 1-216-833-11 METAL CHIP 1/16W < TRANSISTOR > R2000 1-216-797-11 METAL CHIP 1/16W R2003 1-216-815-11 METAL CHIP 1/16W Q1002 8-729-026-07 TRANSISTOR MMBT3906LT1...
  • Page 44 SPP-A985 Ref. No. Part No. Description Remark MISCELLANEOUS *************** A-3649-143-A RF UNIT ASSY, HAND A-3649-146-A RF UNIT ASSY, BASE ANT1001 1-754-103-11 ANTENNA ANT3001 1-501-999-31 ANTENNA LCD1 A-3763-158-A LCD BOARD, COMPLETE * LCD1001 A-3649-144-A LCD ASSY (HS) 1-505-231-11 SPEAKER (5cm) U1003...

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