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SPP-874/884
SERVICE MANUAL
E Model
Handset

Base unit Photo: SPP-884

SPECIFICATIONS
General
Operating channel 25 channels Dial signal Tone, 10 PPS (pulse) selectable Supplied accessories AC power adaptor (AC-T56) (1) (E92) AC power adaptor (AC-T124) (1) (E12) AC power adaptor (AC-T125) (1) (ARGENTINE) Telephone line cord (1) Rechargeable battery pack (BP-T16) (1) (SPP-874) Rechargeable battery pack (BP-T16) (2) (SPP-884) Wall bracket/stand (1) Screws (2)

Base unit
Power source DC 9V from AC power adaptor Rechargeable battery pack BP-T16 (SPP-884 only) Battery charging time Approx. 20 hours (SPP-884 only) Dimensions Approx. 120 × 64 × 223 mm (w/h/d), antenna excluded (approx. 4 3/4 × 2 5/8 × 8 7/8 inches) Antenna: Approx. 680 mm (approx. 26 7/8 inches) Mass Approx. 350 g (approx. 12 oz), wall bracket and battery excluded Design and specifications are subject to change without notice. · Abbreviation E12 : 220­240V area of E model E92 : 120V area of E model

Handset
Power source Rechargeable battery pack BP-T16 Battery life Standby : Approx. 14 days Talk : Approx. 6 hours Battery charging time Approx. 12 hours Dimensions Approx. 54 × 195 × 49 mm (w/h/d), antenna excluded (approx. 2 1/4 × 7 3/4 × 1 15/16 inches) Antenna: Approx. 285 mm (approx. 11 1/4 inches) Mass Approx. 240 g (approx. 8 oz), battery included

CORDLESS TELEPHONE
MICROFILM

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SPP-874/884 SECTION 5 DIAGRAMS
5-1. BLOCK DIAGRAM -- BASE SECTION --

ANT1 TELESCOPIC ANTENNA +5V MIX, IF AMP, DET IC501 (1/3) 1st MIX IN 1st MIX OUT CF501 10.68MHz 2nd MIX IN 2nd MIX OUT IF IN FL501 RX DISCRI 28 AF OUT PRE IN 15 PRE AMP 24 RSSI D-COMP IN RELAY DRIVE Q701

EXPANDER IC501 (2/3) EXP OUT 17 MUTE RECE IN 18 RX AMP T701 R02 R01 20 19 AF AMP Q702

MJ701 LINE

BPF501

RF AMP Q501

40

1st MIX

38

36

2nd MIX

34

CF502 460kHz

32

DET

27

EXPANDER

D-COMP OUT

VCO CONT

RX VCO VCO1 VCO2

RX PLL RX OUT LO1

LOCAL OSC TX IN LO2

TX PLL TX OUT RSSI

RY701

43 44

42

46

3

4

1

47

22

23 COMPRESSOR IC501 (3/3) RV501 RSSI Hi 9 FIL OUT FIL IN 10 COMP OUT 11 MUTE MIC IN 14

D706 LINE

PH702 RING DET

L503 RX VT BPF601 RF AMP Q601 RV601 POWER LEVEL POWER CONTROL Q906 Q904,905 RECHARGEABLE BATTERY (BP-T16) CN901 REG IC903 TX POWER CONTROL Q603 B+ +5V REG IC901 2 VOLTAGE DET 3 IC902 RESET Q901 D908 +5V X801 4.048MHz

X501 10.22MHz TX VCO Q602

L602 TX VT

COMPRESSOR

REG IC904

9

OSC1

10 OSC2

D904 VOLTAGE DET Q902,903

REG IC905

+B TX

20 TX+B CTRL 12 RESET

RSSI CTRL RX DATA MUTE TX DATA CLK PLL DATA STB SIG DATA IN DP RING DET

1 4 7 6 17 18 16 19 22 15

6 7 8

J901 DC IN 9V

COL1 COL2 COL3 COL4

23 24 25 26

MATRIX D800, D804,805,808

CHARGE REG Q907

SWITCH Q803 D841 RESET Q801,802 14 AC DET

SYSTEM CONTROL IC801

P S801 HANDSET LOCATOR ROW1 27 ROW2 28 D810 POWER T S802 DIAL MODE

D842 (CHARGE) CHARGE L. IN Q909 CHARGE DET Q908 04

SIG OUT

SPP-884

DATA LATCH CONTROL CLK DATA STB

LIMITER

5

D902 CHARGE 15 CHARGE DET POWER LED 30

+5V

Signal path : RX (From TEL LINE) : RX (To TEL LINE) : BELL

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SPP-874/884

5-2. BLOCK DIAGRAM -- HANDSET SECTION --

ANT2 TELESCOPIC ANTENNA MIX, IF AMP, DET IC1 (1/3) 1st MIX IN 1st MIX OUT CF1 10.7MHz 2nd MIX IN 2nd MIX OUT IF IN

B+

L4 RX DISCRI 28 AF OUT PRE IN 15 PRE AMP

EXPANDER IC1 (2/3)

BPF1

40

1st MIX

38

36

2nd MIX

34

CF2 460kHz

32

DET

27

EXPANDER MUTE

EXP OUT 17

RECE IN 18 RX AMP

R02 R01

20 19

SP1 SPEAKER

D-COMP IN 24

RSSI D-COMP OUT RX VCO VCO1 VCO2 RX PLL RX OUT LO1 LOCAL OSC TX IN LO2 TX PLL TX OUT RSSI BATT ALARM BAT ALM

VOLUME CONTROL Q1 RV501

43 44

VCO CONT 42

46

3

4

1

47

22

23

21 COMPRESSOR IC1 (3/3) FIL OUT 9 FIL IN 10 COMP OUT 11 MUTE MIC IN 14

L3 RX VT BPF101 RF AMP Q101 RV101 POWER LEVEL

X1 10.2MHz TX VCO Q102

L101 TX VT

RV1 RSSI Hi

INVERTER Q405

COMPRESSOR

MIC401

EEPROM IC402 S201 (JOG DIAL) SDA 5 SCL 6 WP 7 62 SDA 63 SCL 61 WP

SYSTEM CONTROL IC401

6 7 8

EEPROM RSSI H/L RX DATA IN BATT ALM IN HICUT MUTE TX DATA CLK CTRL DATA STB SIG STAGE VOL CTRL MIC ON/OFF 27 20 18 26 2 23 22 21 24 28 64 LCD1 LIQUID CRYSTAL DISPALY PANEL

KEY ACTIVE IC201,202 D202

46 EN1 47 PUSH 48 EN2 25 TX+B CTRL

D201 17 CHARGE IN D404 (CHARGE) VOLTAGE DET IC404

RESET Q404 Q403

8 12 49 50 51 52

SYSTEM RESET HOLD RETURN 0 RETURN 1 KEY RETURN 2 RETURN 3

E,R/W,RS DB4 54 | | DB7 60

CLOCK1 5 CLOCK2 6

CN2 RECHARGEABLE BATTERY (BP-T16) B+ 41 42 43 44 45 OUT 0 OUT 1 OUT 2 OUT 3 OUT 4

X401 4.048MHz

B+

POWER CONTROL Q301

REG IC301 B+ RINGER DRIVE Q401,402 BZ401 D302-308 B+ LED ON/OFF Q302

SIG OUT

+BTX

CLK DATA STB

TX POWER CONTROL Q103

B+

DATA LATCH CONTROL

LIMITER

5

KEY MATRIX S202-221

LCD+B CTRL 53 KEY BEEP ATT 1 RINGER 3 LIGHTS 39 TALK LED 40 D301 TALK B+

Signal path : RX (From TEL LINE) : RX (To TEL LINE)

04

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SPP-874/884

5-3. PRINTED WIRING BOARD -- BASE SECTION --

· Semiconductor Location Ref. No. D501 D502 D601 D701 D702 D703 D704 D706 D801 D804 D805 D806 D807 D808 D810 D841 D842 D901 D902 D903 D904 D908 D909 IC501 IC801 IC901 IC902 IC903 IC904 IC905 Q501 Q601 Q602 Q603 Q701 Q702 Q801 Q802 Q803 Q901 Q902 Q903 Q904 Q905 Q906 Q907 Q908 Q909 Location C-8 C-5 A-8 F-8 E-8 F-8 E-7 A-9 B-4 A-2 A-2 C-5 B-4 A-2 A-9 D-4 D-4 C-10 A-8 E-4 F-5 E-3 F-2 C-7 A-3 D-10 D-4 F-4 F-2 E-4 C-8 B-9 B-8 A-6 E-6 E-5 D-4 C-4 D-4 D-4 E-4 F-4 E-4 F-4 F-3 F-2 E-2 E-2

Note: · X : parts extracted from the component side. · p : parts mounted on the conductor side. ¢ · : internal component. · b : Pattern from the side which enables seeing. · Abbreviation E12 : 220-240V area of E model E92 : 120V area of E model

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SPP-874/884
5-4. SCHEMATIC DIAGRAM -- BASE SECTION -- · Refer to page 37 for IC Block Diagrams.

Note: · All capacitors are in µF unless otherwise noted. pF: µµF 50 WV or less are not indicated except for electrolytics and tantalums. · All resistors are in and 1/4 W or less unless otherwise specified. ¢ · : internal component. · C : panel designation. · U : B+ Line. · H : adjustment for repair. · Power voltage is dc 9 V and fed with regulated dc power supply from external power voltage jack. · Voltage is dc with respect to ground under no-signal condition. · Voltage dc with respect to ground under no-signal conditions. · Voltages are taken with a VOM (Input impedance 10 M). Voltage variations may be noted due to normal production tolerances. · Signal path. N : RX O : TX P : bell · Abbreviation E12 : 220-240V area of E model E92 : 120V area of E model

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SPP-874/884
5-5. PRINTED WIRING BOARD -- HAND MAIN SECTION --

· Semiconductor Location Ref. No. D3 D101 IC1 Q1 Q101 Q102 Q103 Location A-1 C-4 B-6 B-9 D-2 C-3 C-2

(Page 34)

Note: · X : parts extracted from the component side. · Y : parts extracted from the conductor side. r · : Through hole. · b : Pattern from the side which enables seeing. (The other layer's patterns are not indicated.) · Abbreviation E12 : 220-240V area of E model E92 : 120V area of E model Caution: Pattern face side: (Side B) Parts face side: (Side A) Parts on the pattern face side seen from the pattern face are indicated. Parts on the parts face side seen from the parts face are indicated.

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SPP-874/884

5-6. SCHEMATIC DIAGRAM -- HAND MAIN SECTION -- · Refer to page 37 for IC Block Diagrams.

(Page 36)

Note: · All capacitors are in µF unless otherwise noted. pF: µµF 50 WV or less are not indicated except for electrolytics and tantalums. · All resistors are in and 1/4 W or less unless otherwise specified. ¢ · : internal component. · U : B+ Line. · H : adjustment for repair. · Power voltage is dc 3.6 V and fed with regulated dc power supply from battery connector (CN2). · Voltage is dc with respect to ground under no-signal condition. · Voltages are taken with a VOM (Input impedance 10 M). Voltage variations may be noted due to normal production tolerances. · Signal path. N : RX O : TX · Abbreviation E12 : 220-240V area of E model E92 : 120V area of E model

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SPP-874/884

5-7. PRINTED WIRING BOARDS -- HAND KEY SECTION --
Note: · X : parts extracted from the component side. · Y : parts extracted from the conductor side. r : Through hole. · · b : Pattern from the side which enables seeing. · b : Carbon pattern (The other layer's patterns are not indicated.) · Abbreviation E12 : 220-240V area of E model E92 : 120V area of E model Caution: Pattern face side: (Side B) Parts face side: (Side A) Parts on the pattern face side seen from the pattern face are indicated. Parts on the parts face side seen from the parts face are indicated.

· Semiconductor Location Ref. No. D201 D202 (D301) (D302) (D303) (D304) (D305) (D306) (D307) (D308) D401 D402 D403 D404 IC201 IC202 IC301 IC401 IC402 IC404 Q301 Q302 Q401 Q402 Q403 Q404 Q405 ( Location B-3 B-3 A-4 A-2 B-2 B-2 A-5 B-5 A-7 B-7 A-9 B-5 B-5 B-8 B-3 B-3 B-2 B-4 B-4 B-6 B-2 A-4 A-8 A-8 B-6 B-5 B-6

(Page 30)

) : SIDE A

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SPP-874/884

5-8. SCHEMATIC DIAGRAM -- HAND KEY SECTION -- · Refer to page 37 for IC Block Diagrams.

(Page 32)

Note: · All capacitors are in µF unless otherwise noted. pF: µµF 50 WV or less are not indicated except for electrolytics and tantalums. · C : panel designation. · U : B+ Line. · Power voltage is dc 3.6 V and fed with regulated dc power supply from battery connector (CN2). · Voltage is dc with respect to ground under no-signal condition.

· Voltages are taken with a VOM (Input impedance 10 M). Voltage variations may be noted due to normal production tolerances. · Abbreviation E12 : 220-240V area of E model E92 : 120V area of E model

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