WITH MARK ! ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. TEST MODE REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE 3-1. Base Unit ................. 14 PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL 3-2. Handset ................15 OR IN SUPPLEMENTS PUBLISHED BY SONY.
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SECTION 1 This section is extracted from instruction manual. GENERAL – 3 –...
SECTION 2 DISASSEMBLY Note: Follow the disassembly procedure in the numerical order given. HAND CABINET (REAR) 2 two screws (BTP3 × 12) 1 Remove the battery case lid to direction of the arrow A . 3 two claws 5 Remove the hand cabinet (rear) to direction of the arrow B .
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HAND MAIN BOARD 2 two screws (BTP3 × 10) 3 washer 5 Remove the HAND MAIN board to direction of the arrow C . 1 two screws (P2 × 5) 4 antenna (ANT2) 1 two screws (P2 × 5) BASE CABINET (UPPER) 3 base cabinet (upper) 2 claw 1 two screws...
SECTION 3 TEST MODE [INTERCOM] 3-1. BASE UNIT • Toggle mic mute signal ON/OFF (U12 !™ pin). [Start-up] • CHARGE LED is ON at mic mute enable, off at mic mute disable. 1. When powered up, press and hold keys at the same time for 1 ~ 2 seconds.
3-2. HANDSET [Start-up] 1. When powered up, press and hold at the same time for 1 ~ 2 seconds. 2. Then press at the same time. 3. Release and press again at the same time to enter testmode, and happy tone is emitted. Default setting: •...
SECTION 4 ELECTRICAL ADJUSTMENTS 4-1. BASE UNIT SECTION 3. RX LOOP VOLTAGE check Setting: digital voltmeter • Make the set in Test Mode (See page 14) 1. TX LOOP VOLTAGE check TP (RX-LOOP-VOLTAGE) – Setting: digital voltmeter Precedure: • Connect a voltmeter to TP3 (RX-LOOP-VOLTAGE) and GND. TP4 (TX-LOOP-VOLTAGE) •...
4-2. HANDSET SECTION 3. RX LOOP VOLTAGE check Setting: frequency counter • Make the set in test mode (See page 15) 1. TX LOOP VOLTAGE check J2 (RX-LOOP-VOLTAGE) – Setting J2 (GND) digital voltmeter Precedure: J2 (TX-LOOP-VOLTAGE) • Connect a frequency counter to J2 (RX-LOOP-VOLTAGE) and –...
5-3. NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS • Waveforms – BASE UNIT Section – – HANDSET Section – Note on Schematic Diagram: Note on Printed Wiring Boards: • All capacitors are in µF unless otherwise noted. pF: µµF •...
SPP-935 5-5. PRINTED WIRING BOARD – BASE MAIN Board (SIDE B) – • Semiconductor Location (SIDE B) Ref. No. Location F-13 G-13 G-13 F-13 G-13 G-12 F-10 E-14 F-10 (Page 33) – 27 – – 28 –...
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SPP-935 5-6. SCHEMATIC DIAGRAM – BASE MAIN Section (1/2) – • See page 24 for Waveforms. • See page 40 to 42 for IC Block Diagrams. (Page 31) The components identified by mark ! or dotted line with mark ! are critical for safety.
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SPP-935 5-7. SCHEMATIC DIAGRAM – BASE MAIN Section (2/2) – • See page 24 for Waveforms. • See page 40 to 42 for IC Block Diagrams. (Page 34) (Page 30) (Page 34) The components identified by mark ! or dotted line with mark ! are critical for safety.
5-13. IC PIN FUNCTION DESCRIPTION • BASE MAIN BOARD U3 LSC433399FB (SYSTEM CONTROLLER) Pin No. Pin Name Function DTMF EN DTMF tone control signal output to the KS58015D (U17) “H”: enable, “L”: disable EEPROM CS Chip select signal output to the EEPROM (U4) “H” active, Normally: “L” Serial data latch pulse output to the MC74HC595AF (U15) When LATCH 1 goes from “L”...
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• HAND MAIN BOARD U3 LSC433400FB (SYSTEM CONTROLLER) Pin No. Pin Name Function RX ENABLE RX system power supply on/off control signal output “L”: power on LO BAT Battery level detect signal input from the LP2953IM (U11) “L”: battery low level OPEN Not used (open) 4 to 7...
SECTION 6 EXPLODED VIEWS NOTE: • -XX and -X mean standardized parts, so they • Items marked “*” are not stocked since they • The mechanical parts with no reference num- may have some difference from the original are seldom required for routine service. Some ber in the exploded views are not supplied.
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(2) BASE UNIT SECTION not supplied not supplied ANT1 (including r A) Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark * 51 1-670-653-11 BASE KEY BOARD * 62 A-3672-439-A BASE MAIN BOARD, COMPLETE 1-771-451-11 SWITCH, RUBBER KEY (BASE) 3-026-666-01 CABINET (LOWER), BASE 3-026-669-01 LENS (3 LED) 3-383-270-01 FOOT, RUBBER...
BASE KEY SECTION 7 ELECTRICAL PARTS LIST BASE MAIN NOTE: • Due to standardization, replacements in the • Items marked “*” are not stocked since they The components identified by mark ! or dotted line with mark parts list may be different from the parts speci- are seldom required for routine service.
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BASE MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 1-216-853-11 METAL CHIP 470K 1/16W 1-216-841-11 METAL CHIP 1/16W 1-216-815-11 METAL CHIP 1/16W 1-216-809-11 METAL CHIP 1/16W 1-216-815-11 METAL CHIP 1/16W 1-216-679-11 METAL CHIP 0.5% 1/10W R100 1-216-815-11 METAL CHIP 1/16W...
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BASE MAIN HAND MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R163 1-216-833-11 METAL CHIP 1/16W < IC > R164 1-216-833-11 METAL CHIP 1/16W R165 1-216-833-11 METAL CHIP 1/16W 8-759-459-06 IC MC13156DWR2 R166 1-218-292-11 RES, CHIP 1/16W 8-759-294-10 IC TB31202FN R167...
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HAND MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 1-218-653-11 METAL CHIP 0.5% 1/16W 8-719-047-37 DIODE BAS16 1-218-653-11 METAL CHIP 0.5% 1/16W 8-719-047-37 DIODE BAS16 1-216-815-11 METAL CHIP 1/16W 8-719-909-90 DIODE BAV99 8-719-063-75 LED SML-010JT-T86 (INTERCOM) 1-216-817-11 METAL CHIP 1/16W 1-801-729-11 DIODE VARISTOR, CHIP...
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HAND MAIN Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R142 1-216-817-11 METAL CHIP 1/16W 1-216-853-11 METAL CHIP 470K 1/16W R143 1-216-845-11 METAL CHIP 100K 1/16W 1-218-759-11 METAL CHIP 200K 0.5% 1/10W R144 1-216-853-11 METAL CHIP 470K 1/16W 1-216-699-11 METAL CHIP...