Sony SPP-A968 Service Manual

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Summary of Contents:

[Page 1] Sony SPP-A968 - Cordless Telephone

MICROFILM SERVICE MANUAL General Spread method Direct-Sequence Spread-Spectrum Access method FDMA-TDD Frequency band 902 - 928 MHz Operating channel 20 channels Dial signal Tone, 10 PPS (pulse) selectable Supplied accessories AC power adaptor (AC-T46...

[Page 2] Sony SPP-A968 - Cordless Telephone

3232 SPP-A968 6-5. SCHEMATIC DIAGRAM – BASE MAIN Board (1/3) – • See page 31 for Waveform. • See page 42 for IC Block Diagrams. (Page 33) (Page 34) ...

[Page 3] Sony SPP-A968 - Cordless Telephone

3333 SPP-A968 6-6. SCHEMATIC DIAGRAM – BASE MAIN Board (2/3), BASE MICROPHONE Board – • See page 31 for Waveform. • See page 42 for IC Block Diagrams. (Page 32) (Page 34) (Page 34) ...

[Page 4] Sony SPP-A968 - Cordless Telephone

3434 SPP-A968 6-7. SCHEMATIC DIAGRAM – BASE MAIN Board (3/3) – • See page 31 for Waveform. • Semiconductor Location (Side A) Ref. No. Location • Semiconductor Location (Side B) Ref. No. Location D100 B-5 D102 C-10 D103 C-10 D104 E-10 D105 ...

[Page 5] Sony SPP-A968 - Cordless Telephone

3737 SPP-A968 6-10. SCHEMATIC DIAGRAM – DSP Board – • See page 31 for Waveforms. • See page 42 for IC Block Diagrams. (Page 34) ...

[Page 6] Sony SPP-A968 - Cordless Telephone

3939 SPP-A968 6-12. SCHEMATIC DIAGRAM – BASE KEY Board – (Page 34) (Page 34) ...

[Page 7] Sony SPP-A968 - Cordless Telephone

4141 SPP-A968 6-14. SCHEMATIC DIAGRAM – HAND MAIN Board – • See page 31 for Waveform. • See page 42 for IC Block Diagrams. ...

[Page 8] Sony SPP-A968 - Cordless Telephone

4242 + – 1 2 3 4 5 6 7 8 9 10 16 15 14 13 12 11 BAND-PASS FILTER 2.4V REFERENCE RECEIVE SHIFT REGISTOR TRANSMIT SHIFT REGISTOR SEQUENCE AND CONTROL 1.575V REF ADCDAC SHARED DAC BAND-PASS FILTER + – 18 19 17 20 VAG TI+ TI– TG MU/A VSS FST DT BCL...

[Page 9] Sony SPP-A968 - Cordless Telephone

43 IC951 S-24C01AFJA-TB-01 (BASE MAIN Board) START/STOP DETECTION CIRCUIT SERIAL CLOCK CONTROL CIRCUIT DEVICE ADDRESS COMPARATOR HIGH VOLTAGE GENERATOR DATA OUTPUT/ ACK OUTPUT CONTROL CIRCUIT DATA REGISTER EEPROM SELECTOR ADDRESS COUNTER Y DECODER DO...