Sony MP-7001-SC, MP-7001-SM, MP-7001-SP, MP-7001-SS, MP-7001-ST Service manual

MP-7001SC/7001SM/7001SP/

SERVICE MANUAL

For Technical Service

Ver 1.1 2000. 03 With SUPPLEMENT-1 (9-927-621-82)

7001SS/7001ST

US Model

SKYTEL

TABLE OF CONTENTS

1. TOOLS.......................................................................... 2

2. ELECTRICAL ADJUSTMENTS

PD Voltage Adjustment ................................................... 3

Local Frequency Adjustment.......................................... 4

Antenna Adjustment........................................................ 4

3. DIAGRAMS

3-1. Block Diagram ................................................................ 5

3-2. Printed Wiring Boards..................................................... 8

3-3. Schematic Diagram ......................................................... 11

3-4. IC Pin Function Description ........................................... 17

4. ELECTRICAL PARTS LIST ............................... 19

Flexible Circuit Board Repairing

• Keep the temperature of the soldering iron around 270 ˚C during repairing.

• Do not touch the soldering iron on the same conductor of the circuit board (within 3 times).

• Be careful not to apply force on the conductor when soldering or unsoldering.

Notes on chip component replacement

• Never reuse a disconnected chip component.

• Notice that the minus side of a tantalum capacitor may be damaged by heat.

SECTION 1

TOOLS

Fig. Description Part No. Remarks

1 Programming Jig J-2503-006-A Include 23456 2 Programming Jig J-2502-043-2 3 ROM Writer Software J-2503-007-A

3

ROM Writer Software

6

Cable (RS-232C)

1

2

Programming Jig

5

AC Adaptor

Fig. Description Part No. Remarks

4 Manual J-2503-008-A 5 AC Adaptor 1-473-709-11 6 Cable (RS-232C) 1-777-797-12

4

Manual

MANIAL

[ Connecting the Set and Programming Jig ]

1

Peel off the label (Blank) on the back of the pager cabinet.

2

Remove the batteries.

3

Set the pager in the programming jig.

4

Lower the programming jig clamp and secure the pager in place.

Label (Blank)

1

Set

2

Dry Battery

3

4

25 pin D-Sub

IBM-PC (not supplied)

Cable (RS-232C)

9 pin D-Sub

Programming Jig

– 2 –

AC Adaptor

SECTION 2

digital voltmeter

SIGNAL board

TP (PD)

ELECTRICAL ADJUSTMENTS

0 dBm = 0.775 V

Carrier Frequency of each channel

(Frequency intervals are 25 kHz at each channel)

Channel Frequency Channel Frequency

1 929.0125 61 930.5125 2 929.0375 62 930.5375 3 929.0625 63 930.5625 4 929.0875 64 930.5875 5 929.1125 65 930.6125 6 929.1375 66 930.6375 7 929.1625 67 930.6625 8 929.1875 68 930.6875

9 929.2125 69 930.7125 10 929.2375 70 930.7375 11 929.2625 71 930.7625 12 929.2875 72 930.7875 13 929.3125 73 930.8125 14 929.3375 74 930.8375 15 929.3625 75 930.8625 16 929.3875 76 930.8875 17 929.4125 77 930.9125 18 929.4375 78 930.9375 19 929.4625 79 930.9625 20 929.4875 80 930.9875 21 929.5125 81 931.0125 22 929.5375 82 931.0375 23 929.5625 83 931.0625 24 929.5875 84 931.0875 25 929.6125 85 931.1125 26 929.6375 86 931.1375 27 929.6625 87 931.1625 28 929.6875 88 931.1875 29 929.7125 89 931.2125 30 929.7375 90 931.2375 31 929.7625 91 931.2625 32 929.7875 92 931.2875 33 929.8125 93 931.3125 34 929.8375 94 931.3375 35 929.8625 95 931.3625 36 929.8875 96 931.3875 37 929.9125 97 931.4125 38 929.9375 98 931.4375 39 929.9625 99 931.4625 40 929.9875 100 931.4875 41 930.0125 101 931.5125 42 930.0375 102 931.5375 43 930.0625 103 931.5625 44 930.0875 104 931.5875 45 930.1125 105 931.6125 46 930.1375 106 931.6375 47 930.1625 107 931.6625 48 930.1875 108 931.6875 49 930.2125 109 931.7125 50 930.2375 110 931.7375 51 930.2625 111 931.7625 52 930.2875 112 931.7875 53 930.3125 113 931.8125 54 930.3375 114 931.8375 55 930.3625 115 931.8625 56 930.3875 116 931.8875 57 930.4125 117 931.9125 58 930.4375 118 931.9375 59 930.4625 119 931.9625 60 930.4875 120 931.9875

Adjustment Preparations

Procedure:

1. Set the receive frequency to 930.4875 MHz by ROM writer.

2. Remove the rear cabinet.

3. Short the lands of BP (TSET1) and BP (TEST2) on the SIGNAL board.

4. Set a dry battery (size “AA”).

Note: After adjustments, open the lands of BP (TSET1) and BP (TEST2)

Shorting Location: SIGNAL board (See page 4)

PD V oltage Adjustment

Setting:

Procedure:

1. Connect the digital voltmeter to TP (PD) on the SIGNAL board.

2. Press the [POWER/ESC] button (SW1) to turn the power ON.

3. Adjust CT351 so that the voltage becomes 1.5 V.

Specified Values: 1.45 to 1.55 V

Adjustment Location: SIGNAL board (See page 4)

– 3 –

Local Frequency Adjustment

Setting:

spectrum analyzer

Center frequency: 909.0875 MHz Span : 10 kHz RBW, VBW, SWP: AUTO Reference level : – 50 dBm

• How to make the loop antenna

Wind the lead wire several times to form a loop as shown.

loop antenna

Antenna Adjustment

Setting:

FM RF SSG

Carrier frequency:

930.4875 MHz Frequency deviation: 6.5 kHz Modulation frequency: 1 kHz Output level: 30 dB

loop antenna

µ

V

15 cm

set

Procedure:

1. Connect the audio analyzer or level meter to TP (RSSI) on the SIGNAL board.

2. Press the [POWER/ESC] button (SW1) to turn the power ON.

3. Adjust CT301 for a maximum on the audio analyzer or level meter.

Adjustment Location:

– SIGNAL BOARD (Side B) –

Procedure:

1. Press the [POWER/ESC] button (SW1) to turn the power ON.

2. Adjust CT391 so that the peak of waveform on the spectrum analyzer becomes center of screen.

Specified Values:

Peak of waveform is ± 500 Hz at center frequency.

Adjustment Location: SIGNAL board

ATTEN 0 dB RL - 50.0 dBm

D

X

Center: 909.0875 MHz RBW :1000 Hz

10 dB/

SPAN 10 kHz SWP 2.0 sec

BP

(TEST1)

TP (RSSI)

PD Voltage Adjustment

CT351

CT301

Antenna Adjustment

BP

(TEST2)

Local Frequency Adjustment

TP (RF-IN)

TP (PD)

CT391

– 4 –

3-1. BLOCK DIAGRAM

340 mVp-p

13.2 ns

ANTENNA

RX FREQUENCY:

929.0125MHz to

931.9875MHz

CT301

ANTENNA

AGC

Q303

Q301, 302

D301

RF AMP

929.0125MHz to

931.9875MHz

B.P.F.

FL301

SECTION 3

DIAGRAMS

21.4MHz

1st MIX

Q304

B.P.F.

FL302

2nd MIX, IF AMP, DET

IC301

MIX IN

24

2nd MIX

LOCAL

OSC

IN

X331

20.95MHz

MP-7001SC/7001SM/7001SP/7001SS/7001ST

• Waveforms – SIGNAL Board –

CF302

450kHz

8

QUAD

MIX OUT

1

CF301

450kHz

3

IF IN

IF AMP

5

RSSI

13

QUADRA-

TURE

DET

CIRCUIT B+

LOW-PASS

FILTER

FIL SEL

RF

REG OUT

REGULATOR

22

REGULATOR

Q331

21

REG CONT

COMPARATOR

CHARGE/

DISCHARGE

CHARGE1

16

CHARGE2

1512

BATT B+

FSK

OUT1

19

18

FSK

OUT2

BS

17

MULTIVIBRATOR

IC304

1 Q351 Emitter

DECODER

IC5

EXTSI

11

EXTSO

12

S2

21

S1

22

23

S0

MISO

31

MOSI

30

SCK

28

26

READY

27

SS

24

RESET

XTAL

EXTAL

5

6

SYSTEM CONTROLLER

DEC-SI

98

DEC-SO

99

DEC-SCK

100

DEC-INT

73

87

DEC-SS

88

DEC-RESET

SRAM/LCD-WR

SRAM/LCD-RD

IC1

1MSRAM-CS

A0 – A16

70 – 63, 61, 59 – 52

86 – 79

D0 – D7

46

44

42

S-RAM

IC3

A0 – A16

12, 4, 11, 7, 10

20 – 13, 3, 2, 31, 1,

D0 – D7

21 – 23, 25 – 29

CE1

30

5

R/W

32

OE

100 mV/DIV, 10 ns/DIV

2 IC302 qf XOUT

500 mV/DIV, 50 ns/DIV

1.1 Vp-p

5 IC1 8 XCIN

1 V/DIV, 20 µs/DIV

2.6 Vp-p

30.5

µ

s

6 IC1 qd XIN (Turning the power on)

1 V/DIV, 200 ns/DIV

3.2 Vp-p

ESCAPE

16

EEPROM

DIDOSK

3 4

34 35

33

EEP-DI

IC6

2

EEP-DO

CS

1 7

36 26

EEP-CS

EEP-SCK

RDY/BUSY

EEP-RDY/BUSY

BUFFER

Q352, 371

LOCAL OSC

Q351

BUZZ

20 3

LOW-PASS

FILTER

CT351

PD VOLTAGE

BUFFER

Q10

25 89 91

SYN-UNLOCK

X3

76.8kHz

SW101

OSC1

(JOG DIAL)

D0 – D2

11 – 13

ROTARY

ENCODER

1 2

JOGA

JOGB

JOG DIAL ASIC

IC4

18

RD15CSLCD

REQ

16A117

RESET

5

IC302

XIN

XOUT

PS

6

X391

12.8MHz

15

14

CT391

LOCAL

FREQUENCY

8

FIN

PRESCALER

5

DO

CHARGE

8

PUMP

LD

LOCK

7

DET

PHASE

COMPARATOR

PROGRAMMABLE

DIVIDER/COUNTER

SHIFT

REGISTER &

LATCH

DATA3CLK2LE

4

OSC

CIRCUIT

PLL FREQUENCY

SYNTHESIZER

93

RSSI

LCD-RS

LCD-CS

JOG/LCD-RESET

LCD CONT

23

22

21

2

DATA BUS

LCD CONTRAST

SWITCHING

Q9

LIQUID CRYSTAL

DISPLAY MODULE

33 – 26

DB0 – DB7

WR

35

RD

34

36

RS

37

CS

38

RES

VCI

23

LCD1

78.1 ns

3 IC301 2 OSC OUT

100 mV/DIV, 50 ns/DIV

47.7 ns

– MICROCOMPUTER Board –

256 mVp-p

204 ns

7 IC5 6 EXTAL

500 mV/DIV, 10 µs/DIV

13.1

µ

s

8 IC7 1 CLK

1 V/DIV, 20 µs/DIV

1.5 Vp-p

4 IC4 8 OSC1

90

SYN-LE

SYN-CLK

SYN-DATA

MELODY-SI

MELODY-SC

MELODY-ST

4

XIN13XOUT

115

XCIN8XCOUT

9

18

JOG-PUSH

74 – 76

JOG-D0 – JOG-D2

RESET

10 17 19

VDET (0.7V)

VDET (1.1V)

72 78 77

JOG-RD

JOG-INT

JOG-CS

LIGHT

VIBRATOR

ELECTRO LUMINESCENT

24

1

LIGHT DRIVE

IC8, Q7, 8

VIBRATOR

MOTOR DRIVE

Q1

M

EL1 ELECTRO LUMINESCENT LIGHT

M1

(VIBRATOR)

1 V/DIV, 20 µs/DIV

2.8 Vp-p

05

SW1

POWER/ESC

• SIGNAL PATH

: RX

SP1

(BUZZER)

BUZZER

DRIVE

Q5, 6

– 5 –

MELODY GENERATOR

IC7

MTO

6

CLK

µ

s

1.8

30.5

µ

s

3.7 Vp-p

X1

4.91MHz

SI

2 3

SC ST

4 1

X2

32.768kHz

RESET SIGNAL

GENERATOR

IC11

VOLTAGE DETECT

IC9

VOLTAGE DETECT

Q2

D2

PLL FREQUENCY

SYNTHESIZER (IC302) B+

LOCAL OSC CIRCUIT B+

BATT B+

µ

s

30.5

3V

B+ SWITCH

Q372

DC/DC

CONVERTER

IC10

REGULATOR

IC303

DRY BATTERY

SIZE “AA”

(IEC DESIGNATION R6)

1PCS. 1.5V

9 IC10 3 LX

1 V/DIV, 5 µs/DIV

– 6 – – 7 –