Somy IT-B2 Manuel utilisateur

SERVICE MANUAL

SPECIFICATIONS

Dial signal Tone, 10 PPS (pulse) selectable

Dimensions Approx. 152 ×71 ×216 mm (w/h/d)

(Approx. 6 ×2 7/8 ×8 5/8 inches)

Mass Approx. 560 g

(Approx. 1 lb 4 oz)

Supplied accessories Telephone line cords (2)

Wall bracket (1)

Screws (2) (attached inside the wall bracket)

Directory label (1 sheet)

Design and specifications are subject to change without notice.

IT-B2

Mexican Model

TELEPHONE

MICROFILM

Notes on Chip Component Replacement

•Never reuse a disconnected chip component.

•Notice that the minus side of a tantalum capacitor may be dam-

aged by heat.

SECTION 1

GENERAL This section is extracted

from instruction manual.

SECTION 2

DISASSEMBLY

Note : Follow the disassembly procedure in the numerical order given.

2-1. CABINET (LOWER)

2-2. MAIN BOARD

Open the cabinet (lower).

BTP 3X10

BTP 2X6

BTP 2.6X8

MAIN board

BTP 2.6X8

buzzer

modular jack

(J201)

2-3. KEY BOARD

BTP 2.6X8

KEY board

rubber key switch

button (12 key)

BTP 2.6X8

IT-B2

3-1. PRINTED WIRING BOARDS

SECTION 3

DIAGRAMS

D101 B-2

D102 B-2

D103 B-2

D104 B-2

D105 A-3

D106 A-3

D107 A-3

D108 A-3

D109 B-6

D202 C-2

D205 C-5

D206 C-5

D207 D-5

IC101 A-4

IC201 D-2

Q201 C-1

Q202 C-1

Q204 E-4

Q205 C-4

Q206 B-4

Q207 E-4

Q208 C-4

ZD101 B-3

ZD201 C-2

ZD202 D-5

• Semiconductor

Location

Ref. No. Location

Note:

•X: parts extracted from the component side.

•: Carbon pattern.

•¢: internal component.

•b: Pattern from the side which enables seeing.

IT-B2

3-2. SCHEMATIC DIAGRAM • Refer to page 6 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 Ωand 1/4W or less unless otherwise

specified.

•¢: internal component.

•C: panel designation.

•U: B+ Line.

• Power voltage is dc 12V and fed with regulated dc power

supply from J101 with 100 Ωin series.

• Voltage is dc with respect to ground under no-signal

condition.

no mark : OFF HOOK

( ) : ON HOOK

• Voltages aretakenwith aVOM(Input impedance10MΩ).

Voltage variations may be noted due to normal produc-

tion tolerances.

• Signal path.

N: RX (fromTEL LINE)

O:TX (to TEL LINE)

P: bell

• IC Block Diagrams

IC101 DBL5002

IC201 HM91652B

REGULATOR

WITH

HYSTERESIS

VCC

RSL

LFI

LFO

OUT

HFI

HFO

GND

AMP

LOW FREQ

OSC HIGH FREQ

OSC

COLUMN

INTERFACE

CIRCUIT

OSC

DIVIDER

LNB

MEMORY

KERNEL CONTROL CIRCUIT

HDO

MODE

DTMF

HKS

VDD

HFO

HDI

OSC IN

OSD OUT

MUTE

VSS

HFI

VDD

ROW/COLUMN

PROGRAMMING

COUNTER

OUTPUT

INTERFACE

CIRCUIT

INPUT

INTERFACE

CIRCUIT

ROW

INTERFACE

CIRCUIT

SAVE

MEMORY MEMORY

DECODER &

DATA LATCH

PULSE

GENERATOR D/A

CONVERTER

SECTION 4

EXPLODED VIEW

NOTE:

• The mechanical parts with no reference

number in the exploded views are not supplied.

• Items marked “*” are not stocked since

they are seldom required for routine service.

Some delay should be anticipated

when ordering these items.

• -XX and -X mean standardized parts, so

they may have some difference from the

original one.

• Color Indication of Appearance Parts

Example :

KNOB, BALANCE (WHITE) ... (RED)

Parts Color Cabinet’s Color

Ref. No. Part No. Description Remark

• Accessories and packing materials are

given in the last of this parts list.

12 12

13 5

SP101

J201

SW101

1 3-925-103-01 FOOT, RUBBER

2 7-685-533-19 SCREW +BTP 2.6X6 TYPE2 N-S

3 X-3371-275-1 HANDSET ASSY, LOCAL

*4 A-3672-801-A MAIN BOARD, COMPLETE

5 1-762-340-11 SWITCH, RUBBER KEY

6 4-908-618-21 SCREW (+BTP) (2X6)

7 3-925-097-01 CABINET (UPPER)

8 3-925-098-01 CABINET (LOWER)

9 3-925-099-01 BUTTON (12 KEY)

10 3-925-100-01 LEVER (HOOK)

11 3-925-101-01 HANGER (HANDSET)

12 7-685-547-11 SCREW +BTP 3X10 TYPE2 N-S

*13 1-660-943-11 KEY BOARD

14 1-769-626-11 WIRE (FLAT TYPE) (9 CORE)

15 1-696-455-11 CORD, CURL

J201 1-770-504-11 JACK, MODULAR (4C) 4P (HANDSET)

SP101 1-529-116-11 BUZZER, PIEZOELECTRIC

SW101 1-692-494-11 SWITCH, HOOK (HOOK)

SECTION 5

ELECTRICAL PARTS LIST

NOTE:

• Due to standardization, replacements in

the parts list may be different from the

parts specified in the diagrams or the

components used on the set.

• -XX and -X mean standardized parts, so

they may have some difference from the

original one.

• RESISTORS

All resistors are in ohms.

METAL:Metal-film resistor.

METAL OXIDE: Metal oxide-film resistor.

F:nonflammable

• Items marked “*” are not stocked since

they are seldom required for routine service.

Some delay should be anticipated

when ordering these items.

• SEMICONDUCTORS

In each case, u : µ, for example:

uA.. : µA.. uPA.. : µPA..

uPB.. : µPB.. uPC.. : µPC.. uPD.. : µPD..

• CAPACITORS

uF : µF

• COILS

uH : µH

Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark

When indicating parts by reference

number, please include the board.

KEY MAIN

*1-660-943-11 KEY BOARD

**********

< CONNECTOR >

*CN101B 1-569-704-11 HOLDER, CABLE (PC BOARD) 9P

*************************************************************

*A-3672-801-A MAIN BOARD, COMPLETE

*********************

1-769-626-11 WIRE (FLAT TYPE) (9 CORE)

< CAPACITOR >

C101 1-137-479-11 FILM 1uF 5% 400V

C102 1-126-964-11 ELECT 10uF 20% 50V

C103 1-126-959-11 ELECT 0.47uF 20% 50V

C104 1-163-215-00 CERAMIC CHIP 0.0027uF 10% 50V

C201 1-128-551-11 ELECT 22uF 20% 25V

C203 1-163-038-00 CERAMIC CHIP 0.1uF 25V

C204 1-126-933-11 ELECT 100uF 20% 16V

C205 1-163-038-00 CERAMIC CHIP 0.1uF 25V

C206 1-163-205-00 CERAMIC CHIP 0.001uF 5% 50V

C207 1-163-205-00 CERAMIC CHIP 0.001uF 5% 50V

C208 1-163-205-00 CERAMIC CHIP 0.001uF 5% 50V

C209 1-163-205-00 CERAMIC CHIP 0.001uF 5% 50V

C210 1-163-205-00 CERAMIC CHIP 0.001uF 5% 50V

C211 1-163-205-00 CERAMIC CHIP 0.001uF 5% 50V

C212 1-163-205-00 CERAMIC CHIP 0.001uF 5% 50V

C213 1-163-205-00 CERAMIC CHIP 0.001uF 5% 50V

C215 1-126-959-11 ELECT 0.47uF 20% 50V

C216 1-163-021-11 CERAMIC CHIP 0.01uF 10% 50V

C217 1-163-021-11 CERAMIC CHIP 0.01uF 10% 50V

C218 1-163-021-11 CERAMIC CHIP 0.01uF 10% 50V

C220 1-126-796-11 ELECT 22uF 20% 25V

C222 1-126-176-11 ELECT 220uF 20% 10V

C223 1-163-055-00 CERAMIC CHIP 0.0047uF 10% 50V

C224 1-163-038-00 CERAMIC CHIP 0.1uF 25V

C225 1-115-871-11 ELECT 1uF 20% 50V

C226 1-163-213-00 CERAMIC CHIP 0.0022uF 5% 50V

C227 1-163-021-11 CERAMIC CHIP 0.01uF 10% 50V

C228 1-163-213-00 CERAMIC CHIP 0.0022uF 5% 50V

C230 1-163-063-00 CERAMIC CHIP 0.022uF 50V

C240 1-163-063-00 CERAMIC CHIP 0.022uF 50V

C250 1-163-205-00 CERAMIC CHIP 0.001uF 5% 50V

C251 1-163-063-00 CERAMIC CHIP 0.022uF 50V

C252 1-161-039-00 CERAMIC 0.001uF 10% 50V

C260 1-164-159-21 CERAMIC 0.1uF 50V

< CONNECTOR >

*CN101A 1-569-704-11 HOLDER, CABLE (PC BOARD) 9P

< DIODE >

D101 8-719-059-25 DIODE 1A6

D102 8-719-059-25 DIODE 1A6

D103 8-719-059-25 DIODE 1A6

D104 8-719-059-25 DIODE 1A6

D105 8-719-989-91 DIODE 1N4148A-T265

D106 8-719-989-91 DIODE 1N4148A-T265

D107 8-719-989-91 DIODE 1N4148A-T265

D108 8-719-989-91 DIODE 1N4148A-T265

D109 8-719-989-91 DIODE 1N4148A-T265

D202 1-808-100-11 DIODE MA700

D205 8-719-989-91 DIODE 1N4148A-T265

D206 8-719-989-91 DIODE 1N4148A-T265

D207 8-719-989-91 DIODE 1N4148A-T265

< FUSE >

F101 1-533-713-11 FUSE (500mA/250V)

< IC >

IC101 8-759-595-76 IC DBL5002

IC201 8-759-582-35 IC HM91652B

< JACK >

J101 1-766-250-21 JACK, MODULAR (2C) 6P (LINE)

< TRANSISTOR >

Q201 8-729-804-21 TRANSISTOR 2SA1319TP-S

Q202 8-729-803-98 TRANSISTOR 2SC3332TP-S

Q204 8-729-173-38 TRANSISTOR 2SA733TP-Q

Q205 8-729-173-38 TRANSISTOR 2SA733TP-Q

Q206 8-729-025-58 TRANSISTOR KSC2331Y

Q207 8-729-173-38 TRANSISTOR 2SA733TP-Q

Q208 8-729-119-76 TRANSISTOR 2SA733TP-P

< RESISTOR >

R101 1-249-421-11 CARBON 2.2K 5% 1/4W

R102 1-249-421-11 CARBON 2.2K 5% 1/4W

Sony Corporation

Digital Telecommunication Company

9-923-812-31 99G04034-1

Printed in Japan C1999. 7

Published by Mobile Electronics Company

Quality Assurance Dept.

IT-B2

MAIN

R103 1-216-071-00 METAL CHIP 8.2K 5% 1/10W

R104 1-216-101-00 METAL CHIP 150K 5% 1/10W

R105 1-218-763-11 RES,CHIP 300K 5% 1/10W

R106 1-216-049-11 RES,CHIP 1K 5% 1/10W

R107 1-216-073-00 METAL CHIP 10K 5% 1/10W

R108 1-216-097-00 RES,CHIP 100K 5% 1/10W

R201 1-259-882-11 CARBON 3.3M 5% 1/4W

R202 1-259-882-11 CARBON 3.3M 5% 1/4W

R203 1-216-113-00 METAL CHIP 470K 5% 1/10W

R204 1-216-033-00 METAL CHIP 220 5% 1/10W

R205 1-216-295-00 SHORT 0

R206 1-216-093-00 RES,CHIP 68K 5% 1/10W

R207 1-216-053-00 METAL CHIP 1.5K 5% 1/10W

R210 1-216-121-00 RES,CHIP 1M 5% 1/10W

R211 1-216-069-00 METAL CHIP 6.8K 5% 1/10W

R213 1-216-057-00 METAL CHIP 2.2K 5% 1/10W

R214 1-216-113-00 METAL CHIP 470K 5% 1/10W

R215 1-216-073-00 METAL CHIP 10K 5% 1/10W

R216 1-216-073-00 METAL CHIP 10K 5% 1/10W

R217 1-216-113-00 METAL CHIP 470K 5% 1/10W

R218 1-216-029-00 METAL CHIP 150 5% 1/10W

R219 1-216-059-00 METAL CHIP 2.7K 5% 1/10W

R220 1-216-049-11 RES,CHIP 1K 5% 1/10W

R221 1-216-065-00 RES,CHIP 4.7K 5% 1/10W

R222 1-216-071-00 METAL CHIP 8.2K 5% 1/10W

R223 1-216-053-00 METAL CHIP 1.5K 5% 1/10W

R224 1-249-400-11 CARBON 39 5% 1/4W

R225 1-249-400-11 CARBON 39 5% 1/4W

R226 1-249-400-11 CARBON 39 5% 1/4W

R227 1-249-400-11 CARBON 39 5% 1/4W

R228 1-216-057-00 METAL CHIP 2.2K 5% 1/10W

R229 1-216-113-00 METAL CHIP 470K 5% 1/10W

R230 1-216-001-00 METAL CHIP 10 5% 1/10W

R231 1-216-093-00 RES,CHIP 68K 5% 1/10W

R232 1-216-053-00 METAL CHIP 1.5K 5% 1/10W

R242 1-216-049-11 RES,CHIP 1K 5% 1/10W

R244 1-216-049-11 RES,CHIP 1K 5% 1/10W

R245 1-216-049-11 RES,CHIP 1K 5% 1/10W

R251 1-216-198-00 RES,CHIP 1K 5% 1/8W

R253 1-259-882-11 CARBON 3.3M 5% 1/4W

R261 1-216-017-00 RES,CHIP 47 5% 1/10W

R300 1-249-441-11 CARBON 100K 5% 1/4W

< VARISTOR >

SA101 1-801-271-11 VARISTOR (VF07M10820K)

< SWITCH >

SW101 1-692-494-11 SWITCH, HOOK (HOOK)

SW102 1-692-207-21 SWITCH, SLIDE (RINGER LEVEL)

SW201 1-572-903-51 SWITCH, SLIDE (DIAL MODE)

< VIBRATOR >

X201 1-579-673-11 VIBRATOR, CERAMIC (3.58MHz)

< DIODE >

ZD101 8-719-155-07 DIODE RD27EL2TN

ZD201 8-719-101-50 DIODE RD5.1EL2TN

ZD202 8-719-154-61 DIODE RD6.8EL2TN

*************************************************************

MISCELLANEOUS

***************

5 1-762-340-11 SWITCH, RUBBER KEY

15 1-696-455-11 CORD, CURL

J201 1-770-504-11 JACK, MODULAR (4C) 4P (HANDSET)

SP101 1-529-116-11 BUZZER, PIEZOELECTRIC

*************************************************************

ACCESSORIES & PACKING MATERIALS

********************************

1-696-453-11 CORD (WITH MODULAR PLUG) (LINE) (215cm)

1-696-454-11 CORD (WITH MODULAR PLUG) (LINE) (15cm)

3-378-839-01 LABEL (SCALE CARD)

3-798-915-14 MANUAL, INSTRUCTION (ENGLISH)

3-798-915-24 MANUAL, INSTRUCTION (SPANISH)

X-3370-607-1 CASE ASSY, WALL HOOK

Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark

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