Sony IT-M704, IT-M804 Service manual

IT-M704/M804

SERVICE MANUAL

Ver 1.1 2000. 07

IT-M704

SPECIFICATIONS

Power source DC 12 V from AC power adaptor

Dial signal Tone, 10 PPS (pulse) selectable Dimensions Approx. 7

Mass Approx. 1 lb 14 oz (approx. 990 g)

Supplied accessories AC power adaptor (AC-T71) (1)

AC-T71

7/8 × 2 5/8 × 9 1/4 inches

(w/h/d) (approx. 199 × 68.2 × 235.5 mm)

(IT-M704) Approx. 2 lb 2 oz (approx. 1010 g) (IT-M804)

Handset (1) Handset cord (1) Telephone line cords (3) Pads (4) Wall bracket for phone (1) Quick sheet (1) Assignment of using line stieker (1)

US Model

IT-M804

Design and specifications are subject to change without notice.

4-LINE CALLER ID TELEPHONE

– 1 –

4-LINE TELEPHONE

IT-M704

IT-M804

TABLE OF CONTENTS

1. GENERAL

1-1. IT-M704 Model ................................................................... 3

Setting up the Phone ...........................................................3

Identifying the parts ............................................................5

Making calls ........................................................................5

Receiving calls ....................................................................7

1-2. IT-M804 Model ................................................................... 8

Setting up the Phone ...........................................................8

Identifying the parts ..........................................................10

Making calls ......................................................................10

Receiving calls ..................................................................12

2. DISASSEMBLY

2-1. Cabinet (Upper) Assy........................................................13

2-2. Speaker .............................................................................. 14

2-3. Main Board ....................................................................... 14

2-4. Key Board, LCD Board (IT-M704)...................................15

2-5. Key Board, LCD Board (IT-M804)...................................15

3. TEST MODE .....................................................................16

4. ELECTRICAL ADJUSTMENT

4-1. 450 kHz Data Receiver Adjustment .................................. 18

5. DIAGRAMS

5-1. IC Pin Descriptions ...........................................................19

5-2. Block Diagram –Main (1) Section– .................................. 23

5-3. Block Diagram –Main (2) Section– .................................. 25

5-4. Block Diagram –System Control Section– .......................27

5-5. Printed Wiring Board –Main Section– .............................. 31

5-6. Schematic Diagram –Main (1/3) Section–........................ 35

5-7. Schematic Diagram –Main (2/3) Section–........................ 37

5-8. Schematic Diagram –Main (3/3) Section–........................ 39

5-9. Schematic Diagram –LCD Section (IT-M704)– ............... 41

5-10. Printed Wiring Board –LCD Section (IT-M704)– ............ 43

5-11. Printed Wiring Board –LCD Section (IT-M804)– ............ 47

5-12. Schematic Diagram –LCD Section (IT-M804)– ............... 51

5-13. Schematic Diagram –Key Section–...................................53

5-14. Printed Wiring Board –Key Section–................................ 55

5-15. IC Block Diagrams............................................................ 57

6. EXPLODED VIEWS

6-1. Cabinet (Lower) Section ...................................................60

6-2. Cabinet (Upper) Section (IT-M704) .................................. 61

6-3. Cabinet (Upper) Section (IT-M804) .................................. 62

7. ELECTRICAL PARTS LIST ....................................63

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.

SAFETY-RELATED COMPONENT WARNING!!

COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE WITH MARK 0 ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE P ART NUMBERS APPEAR AS SHO WN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.

– 2 –

1-1. IT-M704 MODEL

LINE 2 PHONE

LINE 1

LINE 2 PHONE

Step 2

Setting up the phone

Do the following steps:

• Connect the phone

• Assigning station number

• Choose the dialing mode

• Enabling/disabling the line

Note on installation

Install the unit:

• on a level surface

• away from heat sources, such as radiators, airducts, and sunlight

• away from excessive moisture, extremely low temperatures, dust, mechanical

vibration, or shock

Connect the phone

You can connect a maximum of 16 phones (IT-M704 or IT-M804) to use your phone as an intercom phone, in addition to using as the 4-line telephone.

To use the intercom features, you must connect all phones (IT-M704 or IT-M804) to the LINE 1 jack correctly.

If you set the dialing mode and date and time on this phone after connecting other phones, these settings will be set automatically to every phone.

If you want to hang the phone on the wall, mount the phone first (see page 44).

L1 L2 L3 L4

300 feet

SECTION 1

GENERAL

The connection method differs according to the conditions of indoor wiring.

[Wiring 1]

Conduct connections follow the procedure in “To connect the phone to two outlets having two lines” on page 10.

[Wiring 2]

Conduct connections follow the procedure in “To connect the phone to four separate outlets” on page 11.

[Wiring 3, 4]

When there is only one outlet for one telephone, wiring work is necessary.

Telephone

Office

Telephone

Office

Telephone

Office

Line1 Line2 Line3 Line4

This section is extracted from instruction manual.

To a telephone To a telephone To a telephone

Line1 Line2 Line3 Line4

Line1, 2

Line3, 4

To a telephone

Telephone

Office

Line1 Line2 Line3 Line4

Line1, 2

Line3, 4

To a telephone

Line1, 2

Line3, 4

Line1 Line2 Line3 Line4

Getting Started

Line1, 2

Line3, 4

To a telephone

Line1 Line2 Line3 Line4

To a telephone

Line1 Line2 Line3 Line4

TEL-1 TEL-2 TEL-3 TEL-4 TEL-16

Note

If the each line is not connected correctly, you cannot use the functions of this phone.

Getting Started

Step 2: Setting up the phone (continued)

To connect the phone to two outlets having two lines

To the telephone outlets

Line 1, 2

Line 3, 4

To an AC outlet

Tips

• If your telephone outlet is not modular, contact your telephone service

• L1 is the first phone line connected to center pair of wires. L2 is the second

Getting Started

Telephone line cords (supplied)

AC power adaptor (supplied AC-T71)

company for assistance.

phone line connected to outer pair of wires.

To “LINE 1/ LINE 1+2”

To “LINE 3/ LINE 3+4”

Connect the telephone line cords to the “LINE 1/LINE 1+2” and “LINE 3/LINE 3+4” jacks and to the telephone outlets.

Connect the AC power adaptor to the DC IN 12V jack and to an AC outlet.

To DC IN 12V

Hook the cord.

Modular

To connect the handset

Connect one end of the handset cord to the handset and the other end to the HANDSET jack on the phone.

To HANDSET jack

continued

Getting Started

To connect the phone to four separate outlets

If you have single line outlet, you need two Two-Line adaptors (not supplied) to connect the phone to the four separate outlets.

To the telephone outlets

Two-Line adaptors (not supplied)

Line 1

Line 2

2, 3

Telephone line

Line 3

Line 4

Telephone line cord (not supplied)

AC power adaptor (supplied AC-T71)

To an AC outlet

Two-Line adaptor

Two-Line adaptor interconnection

Note

The Duplex Jack adaptor cannot be used as the adaptor, which is used in step1.

cords (supplied)

To “LINE 1/ LINE 1+2”

To “LINE 3/ LINE 3+4”

To DC IN 12V

Connect the Two-Line adaptors to the line 1 and line 3 outlets.

Connect the telephone line cords to the “LINE 1/LINE 1+2” and “LINE 3/LINE 3+4” jacks and to the TwoLine adaptors.

Connect the telephone line cords to the Two-Line adaptors and to the line 2 and line 4 outlets.

Connect the AC power adaptor to the DC IN 12V jack and to an AC outlet.

Hook the cord.

Getting Started

continued

Getting Started

– 3 –

Step 2: Setting up the phone (continued)

LINE SELECTDATA

L2 L3 L4

DATA LINE SELECTDATA

L2 L3 L4

Step 2: Setting up the phone (continued)

Notes

• Conduct connections instructed on page 10 or 11 first, when inserting battery for backup (not supplied) in case for a power failure. If “POWER FAILURE” remains displayed when you connect the AC power adaptor to an AC outlet for the first time, remove the battery from the phone and unplug the AC power adaptor, then plug it into an AC outlet.

• Use only the supplied AC-T71 AC power adaptor. Do not use any other AC power adaptor.

• Connect the AC power adaptor to a continuous power supply.

• Place the phone close to the AC outlet so that you can unplug the AC power adaptor easily.

Tips

• Phones other than the IT-M704 and IT-M804 phones cannot be connected to LINE 1 jack.

• Connection and utilization of Private Branch Exchange (PBX) is not possible.

Connecting a computer or FAX

You can connect a computer or FAX, etc. to the DATA jack. For the line to be used for data communication, select L2, L3 or L4 using the DATA LINE SELECT switch.

Notes

•“LINE 2”, “LINE 3” or “LINE 4” is used for receiving or sending computer or FAX data in addition to making or receiving calls. If a call comes in on the line selected with the “call waiting” service while a computer or FAX connected to the “DATA” jack is receiving or sending data, that data may be effected. If you have data communication frequently, we recommend that you and your callers use the line selected for data communication only.

• Connection to ADSL devices is not possible.

• Noise may occasionally be heard on other

lines during data communication depending on the condition of the indoor wiring.

To “DATA”

Computer

FAX

Polarity of the plug

To “LINE 1/LINE 1+2” and “LINE 3/LINE 3+4”

Assigning station number

Ensure to connect all phones (IT-M704 or IT-M804) to LINE 1 jack correctly, and then assign the station number to all phones. To confirm the assigned station number is set correctly, make an intercom call one another. See “Talking between the phones” on page 37.

Press (PROGRAM).

Press b(*) or (#)B until “STATION #” appears on the display.

Press (PROGRAM).

STATION #=??

Enter the two digits station number (01 to 16) by pressing the dialing keys.

Press (PROGRAM). You will hear a long

confirmation beep.

Note

If the number already used for other phone or a number except for 01 to 16 is entered in step 4, “INVALID NUMBER” will be displayed. Enter the different number.

Getting Started

Choose the dialing mode

For the telephone to work properly, select an appropriate dialing mode (tone or pulse).

When other phones (IT-M704 or IT-M804) are connected to the LINE 1 jack, the same dialing mode is automatically set to all the phones. Be sure to connect the phones beforehand, and set the dialing mode.

Press (PROGRAM).

Press b(*) or (#)B until “DIAL MODE” appears on the display.

Press (PROGRAM).

TONE PULSE

Press b(*) or (#)B to choose the dialing mode (“TONE” or “PULSE”), and then press (PROGRAM).

You will hear a long confirmation beep.

Notes

• Do not allow more than 20 seconds to elapse between each step of the procedure.

• The dialing mode cannot be set for every line.

If you aren’t sure of your dialing system

Make a trial call with the dialing mode set to “TONE”. If the call connects, leave the setting as is; otherwise, set to “PULSE”.

Getting Started

Step 2: Setting up the phone (continued)

Enabling/disabling the line

When you may not use all four lines, you need to disable the unused line for the telephone to work properly.

This setting can be set up at each phone separately.

Getting Started

Note

You cannot disable the line 1.

(ERASE/CLEAR)

Press (PROGRAM).

Press b(*) or (#)B until “DISABLE LINE” appears on the display.

Press (PROGRAM).

LINE2

Press b(*) or (#)B to choose the line you want to change, and then press (PROGRAM).

ENABLE DISABLE

Press b(*) or (#)B to choose “ENABLE” or “DISABLE”, and then press (PROGRAM).

The line next to the selected line will flash and you will hear a long confirmation beep.

Repeat steps 4 and 5 for other line setting, if necessary.

To end the setting, press (ERASE/CLEAR).

continued

Getting Started

– 4 –

Getting Started

Identifying the parts

L2 L3 L4

Refer to the pages indicated in parentheses for details.

2 3 4 5 6 7 8

9 q; qa

qs qd qf qg

1 Display window 2 One-touch dial buttons (p. 31)

Used to store numbers on the onetouch dial.

3 Speaker 4 Handset (p. 9, 23, 28) 5 PROGRAM button

(p. 14, 31)

Used to access the menu.

6 LINE buttons (1, 2, 3, 4)

(p. 23, 28)

Lets you make or receive a call.

7 INTERCOM button (p. 37, 42)

Used to make an intercom call.

8 ALL PAGE button (p. 40)

Used to page all phones through the speakerphone.

9 CONF (conference) button

(p. 34, 41)

Lets you talk with two parties at the same time.

Getting Started

qh qj

qk ql

w; wa ws wd wf wg

q; PAGE button (p. 39)

Used to page the other phone.

qa VOLUME +/- button (p. 24, 29) qs TONE b button (p. 24)

Allows you to switch temporarily to tone dialing.

qd MIC (microphone) qf Dialing keys (p. 23) qg # B button (p. 14) qh ERASE/CLEAR button (p. 33, 36)

Used to erase a stored one-touch dialing memory, end the operation during the procedure.

qj FLASH button (p. 29)

Switches to a second call if you have “call waiting” service, or lets you make a new call.

qk LOWER button (p. 31)

Used to store numbers in the second memory of a one-touch dial button.

wlwk

DATA LINE SELECTDATA

e;ea es

ql HOLD button (p. 24, 29)

Puts a call on hold.

w; TRANSFER button (p. 42)

Used to transfer a call.

wa REDIAL/PAUSE button (p. 26)

Redials the last number called, inserts a pause in the dialing sequence.

ws BUSY REDIAL button (p. 27)

Redials the last number called automatically when the line is busy.

wd MUTING button (p. 24, 29)

Mutes your voice during a conversation.

wf DO NOT DISTURB button

(p. 30)

Used to turn off the call ringing and voice from the speaker.

wg SPEAKERPHONE (HEADSET)

button (p. 23, 24)

Used to make or receive a call through the speakerphone or the headset.

ed ef eg

wh DATA jack (p. 12) wj DATA LINE SELECT switch

(p. 12)

Used to select the line for data communication.

wk LINE 1/LINE 1+2 jack (p. 10, 44) wl LINE 3/LINE 3+4 jack (p. 10, 44) e; DC IN 12V jack (p. 10) ea Battery compartment (p. 45) es Hook for AC power adaptor

cord (p. 10)

ed RESET button (p. 48) ef HANDSET jack (p. 9) eg I (HEADSET) jack (p. 24, 29)

continued

Getting Started

Identifying the parts (continued)

Lamp indications

Lamp/button Lighting pattern Status

eh INTERCOM Lights up Calling extension from your phone or

ej CONF Lights up This function is activated. ek MESSAGES Flashes There are voice mail messages.

el LOWER Lights up Selecting the second memory of the

r; LINE 1 to 4 Lights up You are using this line.

ra BUSY REDIAL Lights up This function is activated. rs MUTING Lights up This function is activated. rd DO NOT DISTURB Lights up This function is activated. rf SPEAKERPHONE Lights up Talking through the speakerphone or

(HEADSET) headset, paging or busy redialing.

Getting Started

Lights up OFF

Flashes Receiving an intercom call.

Flashes Other phone using extension.

Flashes Receiving a call.

Flashes Call being held on your phone line or

Flashes Call being held on other phone line.

Flashes Receiving a transferred call.

Flashes Line is used by other phone.

conversation available.

one-touch dial button.

transferred call being made.

Basics

Making calls

el r;

ra rs rd rf

TONE b(*)

(VOLUME)

Note

If there is a line put on hold, you cannot make a call by just picking up the handset and pressing (SPEAKERPHONE) in step 1. Press a line button that is not used first, and then dial the phone number.

Tip

If you pick up the handset during speakerphone conversation, it will change to handset conversation, and conversely when you press (SPEAKERPHONE) during handset conversation, it becomes speakerphone conversation.

(HOLD)

(REDIAL/PAUSE)

(BUSY REDIAL)

(MUTING)

(SPEAKERPHONE)

(LINE 1) (LINE 2)

(LINE 3)

(LINE 4)

Pick up the handset (or press (SPEAKERPHONE)).

“=== TALK ===” appears on the display, and then the operation duration in hours, minutes and seconds is displayed.

The connected line button lights up.

When you want to select the line beforehand, press (LINE 1), (LINE 2), (LINE 3) or (LINE 4).

The corresponding line button lights up.

Dial the phone number. The phone number dialed

appears on the display.

When you’re done talking, replace the handset in the cradle (or press (SPEAKERPHONE)).

The disconnected line button goes off.

continued

Basics

– 5 –

Making calls (continued)

HANDSET

Making calls when the headset is connected

When the TL-HD1 headset (not supplied) is connected to the I (HEADSET) jack, you can talk through the headset.

Press (SPEAKERPHONE) (HEADSET). The SPEAKERPHONE lamp lights up.

Dial the phone number.

When you’re done talking, press (SPEAKERPHONE) (HEADSET).

The SPEAKERPHONE lamp goes off.

Notes

• If the headset is not connected, you will make a call through the

speakerphone in step 1.

• If there is a line put on hold, you cannot make a call by just pressing

(SPEAKERPHONE) (HEADSET) in step 1. Press a line button that is not used first, and then dial the phone number.

Additional tasks

To Do this

Adjust the handset or During phone conversation, press (VOLUME) headset volume (+) or (--). Each press of (VOLUME)(+) or (--)

Adjust the speaker volume During speakerphone conversation, press

Put a call on hold Press (HOLD). The line button on which a call is

Mute your voice Press (MUTING) to disable the microphone. The

Switch to tone dialing Press TONE b(*) after you’re connected. temporarily The line will remain in tone dialing until

switches the handset or headset volume between “HIGH”, “MID” (middle) and “LOW”.

(VOLUME)(+) or (--). Each press of (VOLUME)(+) or (--) switches the speaker

volume by one of 16 levels.

put on hold will flash. Press (LINE 1), (LINE 2), (LINE 3) or (LINE 4) that is flashing to resume the conversation. The corresponding line button can be pressed on every phone.

MUTING lamp lights up. Press (MUTING) again to cancel.

disconnected.

Notes

• When another extension connected to line is in use, the line button flashes .

• When another call comes in on the other line, the corresponding line button

flashes and two beeps are heard from the speaker, but the phone won’t ring. (see page 30).

• If a call is put on hold for more than about three minutes, you will hear an alarm.

Tips

• You can switch to speakerphone during conversation by pressing

(SPEAKERPHONE). Then you can replace the handset in the cradle. To switch back to the handset, pick up the handset again.

• When you pick up the handset or press (SPEAKERPHONE), the vacant line is automatically connected from line 1 to line 4. When neither line is in use, line

1 is connected.

To obtain the best speakerphone performance

• You may not be able to hear the other party’s voice in a noisy place. Therefore, use the speakerphone in a quiet room.

• Do not bring your hand or other objects too close to the microphone or you will hear a shrill noise (“feedback”).

• When the speaker volume is loud, or the telephone has been placed close to a wall, you may find that the volume drops suddenly. This is due to a circuit in the telephone designed to protect against feedback. In such cases, lower the speaker volume slightly.

Basics

Making calls (continued)

Redialing

Pick up the handset (or press (SPEAKERPHONE)). “=== TALK ===” appears on the display. Press (LINE 1), (LINE 2), (LINE 3) or (LINE 4) to select the

line, if necessary. The corresponding line button lights up.

Press (REDIAL/PAUSE) to redial the last number dialed. The last number dialed appears on the display and is

automatically redialed.

Notes

• The last number dialed cannot be stored separately for each line. It is the very last one you have dialed using any line.

• If the last number dialed exceeds 32 digits or if it is erased, the number cannot be redialed.

Tip

When the redialed number exceeds 16 digits, the first 16 digits are displayed, and then the remaining digits are displayed one by one while the displayed numbers move from right to left across the display.

To check the last phone number dialed

When not making a call, press (REDIAL/PAUSE). The number appears on the display for 20 seconds. To dial the number, pick up the handset (or press (SPEAKERPHONE))

while the number is displayed.

Note

“NO DATA” will appear on the display if the last dialed number exceeds 32 digits or if it is erased.

To erase the last phone number dialed

While the phone is not in use, press (REDIAL/PAUSE) twice within 20 seconds.

The number will be erased from the memory.

Busy redialing

If the other line you called is busy, the phone will automatically redial the last number dialed up to 10 times every 30 seconds until the call is connected.

When not making a call, press (BUSY REDIAL). The BUSY REDIAL lamp, MUTING lamp, SPEAKERPHONE lamp

and selected line button light up and the last number dialed appears on the display.

Notes

• Busy redialing is canceled when you press (BUSY REDIAL), or receive or make a call during busy redialing.

• If the last number dialed exceeds 32 digits or if it is erased, the number cannot be redialed.

Making another call while talking

Example: Making a call on line 2 while talking on line 1

Press (HOLD) while talking. The line 1 is put on hold and the LINE 1 button flashes

slowly.

Press (LINE 2).

Dial a phone number for the second party. Now you can talk to the second party on line 2. To disconnect line 2, press (LINE 1).

Notes

• If you do not press (HOLD) in step 1, line 1 will be disconnected.

• If a call is put on hold for more than about three minutes, you will hear an

alarm.

To talk with two parties at the same time using two lines, see “Having a three-way conference call” on page 34.

continued

Basics

– 6 –

Receiving calls

HANDSET

When you hear the phone ring;

• Pick up the handset from the

(LINE 1)

(PROGRAM)

(VOLUME)

b(*)

(#)B

(LINE 2)

(LINE 3)

(LINE 4)

(FLASH)

(HOLD)

(MUTING) (DO NOT DISTURB)

(SPEAKERPHONE)

When calls come in on two or more lines at the same time

Press (LINE 1), (LINE 2), (LINE 3) or (LINE 4) whichever button is flashing.

To put a call on hold or disconnect the line, see “Receiving a call while talking” on page 30.

Basics

phone (or press (SPEAKERPHONE)).

• Press (LINE 1), (LINE 2), (LINE 3) or (LINE 4)

whichever button is flashing. The SPEAKERPHONE lamp

lights up and you can talk through the speakerphone. To talk through the handset, pick up it from the cradle.

The connected line button lights up. “=== TALK ===” appears on the display and the display also shows the operation duration in hours, minutes and seconds.

When you’re done talking, replace the handset in the cradle (or press (SPEAKERPHONE)).

The disconnected line button goes off.

Receiving calls when the headset is connected

When the TL-HD1 headset (not supplied) is connected to the I (HEADSET) jack, you can talk through the headset.

When you hear the phone ring, press (SPEAKERPHONE) (HEADSET).

The SPEAKERPHONE lamp lights up.

When you’re done talking, press (SPEAKERPHONE) (HEADSET). The SPEAKERPHONE lamp goes off.

Note

If the headset is not connected, you will receive a call through the speakerphone in step 1.

Additional tasks

To Do this

Adjust the handset or During phone conversation, press (VOLUME) headset volume (+) or (--). Each press of (VOLUME)(+) or (--)

Adjust the speaker volume During speakerphone conversation, press

Put a call on hold Press (HOLD). The line button on which a call is

Adjust the ringer volume Press (PROGRAM). Press b(*) or (#)B up

Mute your voice Press (MUTING) to disable the microphone. The

Switch to another call on Press (FLASH). (“call waiting” service*) Press (FLASH) again to return to the first caller.

* You need to subscribe to the service from your telephone company.

switches the handset or headset volume between “HIGH”, “MID” (middle) and “LOW”.

(VOLUME)(+) or (--). Each press of (VOLUME)(+) or (--) switches the speaker

volume by one of 16 levels.

put on hold will flash. Press (LINE 1), (LINE 2), (LINE 3) or (LINE 4) that is flashing to resume the conversation. The corresponding line button can be pressed on every phone.

until “RING VOLUME” appears on the display, and then press (PROGRAM). Press b(*) or (#)B to choose “HIGH”, “MID” (middle), “LOW” or “OFF”, and then press (PROGRAM). You will hear (monitor) the phone ring with the adjusted level. While the phone is ringing, you can adjust the ringer volume by pressing (VOLUME)(+) or (--), however, the ringer volume cannot be set to “OFF”.

MUTING lamp lights up. Press (MUTING) again to cancel.

Basics

continuedcontinued

Basics

Receiving calls (continued)

Notes

• When another phone connected to line is in use, the line button flashes slowly.

• If a call is put on hold for more than about three minutes, you will hear an alarm.

Using Do Not Disturb

You can turn off the outside call and intercom call ringing of all the lines and voice from the speaker during a Page and an All Page using this function. However, when a call comes in, “** RINGING **” will be displayed even if this function is activated.

Making calls is available even if this function is activated. While the phone is not in use or the phone is ringing, you can press

(DO NOT DISTURB). The DO NOT DISTURB lamp lights up. To cancel this function, press (DO NOT DISTURB) again.

Note

An outside call cannot be transferred to the phone with the “DO NOT DISTURB” function activated.

Receiving a call while talking

If another call comes in while talking on the other line, the corresponding line button will flash and two beeps will be heard from the speaker.

Example: Receiving a call on line 2 while talking on line 1

Press (HOLD). Line 1 is put on hold and the LINE 1 button flashes slowly.

Press (LINE 2). Now you can talk to the other caller on line 2. To disconnect line 2, press (LINE 1).

Note

If you do not press (HOLD) in step 1, line 1 will be disconnected.

To talk with two parties at the same time using both line 1 and line 2, see “Having a three-way conference call” on page 34.

Basics

– 7 –

1-2. IT-M804 MODEL

Step 2

Setting up the phone

Do the following steps:

• Connect the phone

• Assigning station number

• Choose the dialing mode

• Enabling/disabling the line

Note on installation

Install the unit:

• on a level surface

• away from heat sources, such as radiators, airducts, and sunlight

• away from excessive moisture, extremely low temperatures, dust, mechanical

vibration, or shock

Connect the phone

You can connect a maximum of 16 phones (IT-M804 or IT-M704) to use your phone as an intercom phone, in addition to using as the 4-line telephone.

To use the intercom features, you must connect all phones (IT-M804 or IT-M704) to the LINE 1 jack correctly.

If you set the dialing mode, area codes and date and time on this phone after connecting other phones, these settings will be set automatically to every phone. Moreover, the Caller ID data can be viewed on every connected phone.

If you want to hang the phone on the wall, mount the phone first (see page 70).

L1 L2 L3 L4

300 feet

The connection method differs according to the conditions of indoor wiring.

[Wiring 1]

Conduct connections follow the procedure in “To connect the phone to two outlets having two lines” on page 12.

Line1

Office

Line2 Line3 Line4

Line1 Line2 Line3 Line4

Telephone

[Wiring 2]

Conduct connections follow the procedure in “To connect the phone to four separate outlets” on page 13.

Telephone

[Wiring 3, 4]

When there is only one outlet for one telephone, wiring work is necessary.

Telephone

Office

To a telephone To a telephone To a telephone

Line1 Line2 Line3 Line4

Line1, 2

Line3, 4

To a telephone

Telephone

Office

Line1 Line2 Line3 Line4

Line1, 2

Line3, 4

To a telephone

Line1, 2

Line3, 4

Line1 Line2 Line3 Line4

Line1, 2

Line3, 4

To a telephone

Line1 Line2 Line3 Line4

To a telephone

Line1 Line2 Line3 Line4

Getting Started

TEL-1 TEL-2 TEL-3 TEL-4 TEL-16

Note

If the each line is not connected correctly, you cannot use the functions of this phone.

Getting Started

Step 2: Setting up the phone (continued)

To connect the phone to two outlets having two lines

To the telephone outlets

Line 1, 2

Line 3, 4

To an AC outlet

Tips

• If your telephone outlet is not modular, contact your telephone service

• L1 is the first phone line connected to center pair of wires. L2 is the second

Getting Started

Telephone line cords (supplied)

AC power adaptor (supplied AC-T71)

company for assistance.

phone line connected to outer pair of wires.

To “LINE 1/ LINE 1+2”

To “LINE 3/ LINE 3+4”

Connect the telephone line cords to the “LINE 1/LINE 1+2” and “LINE 3/LINE 3+4” jacks and to the telephone outlets.

Connect the AC power adaptor to the DC IN 12V jack and to an AC outlet.

To DC IN 12V

Hook the cord.

Modular

To connect the handset

Connect one end of the handset cord to the handset and the other end to the HANDSET jack on the phone.

To HANDSET jack

continued

Getting Started

To connect the phone to four separate outlets

If you have single line outlet, you need two Two-Line adaptors (not supplied) to connect the phone to the four separate outlets.

To the telephone outlets

Two-Line adaptors (not supplied)

Line 1

Line 2

2, 3

Telephone line

LINE 2 PHONE

LINE 1

cords (supplied)

To “LINE 1/ LINE 1+2”

To “LINE 3/ LINE 3+4”

To DC IN 12V

Connect the Two-Line adaptors to the line 1 and line 3 outlets.

Connect the telephone line cords to the “LINE 1/LINE 1+2” and “LINE 3/LINE 3+4” jacks and to the TwoLine adaptors.

Connect the telephone line cords to the Two-Line adaptors and to the line 2 and line 4 outlets.

Connect the AC power adaptor to the DC IN 12V jack and to an AC outlet.

Line 3

Line 4

Telephone line cord (not supplied)

AC power adaptor (supplied AC-T71)

To an AC outlet

Two-Line adaptor

Note

The Duplex Jack adaptor cannot be used as the adaptor, which is used in step1.

LINE 2 PHONE

Two-Line adaptor interconnection

Hook the cord.

Getting Started

continued

Getting Started

– 8 –

DATA LINE SELECTDATA

L2 L3 L4

Step 2: Setting up the phone (continued)

Notes

• Conduct connections instructed on page 12 or 13 first, when inserting battery for backup (not supplied) in case for a power failure. If “POWER FAILURE” appears on the display instead of “NO AREA CODE” when you connect the AC power adaptor to an AC outlet for the first time, remove the battery from the phone and unplug the AC power adaptor, then plug it into an AC outlet.

• Use only the supplied AC-T71 AC power adaptor. Do not use any other AC power adaptor.

• Connect the AC power adaptor to a continuous power supply.

• Place the phone close to the AC outlet so that you can unplug the AC power adaptor easily.

Tips

• Phones other than the IT-M804 and IT-M704 phones cannot be connected to LINE 1 jack.

• Connection and utilization of Private Branch Exchange (PBX) is not possible.

Connecting a computer or FAX

You can connect a computer or FAX, etc. to the DATA jack. For the line to be used for data communication, select L2, L3 or L4 using the DATA LINE SELECT switch.

Notes

•“LINE 2”, “LINE 3” or “LINE 4” is used for receiving or sending computer or FAX data in addition to making or receiving calls. If a call comes in on the line selected with the “call waiting” service while a computer or FAX connected to the DATA jack is receiving or sending data, that data may be effected. If you have data communication frequently, we recommend that you and your callers use the line selected for data communication only.

• Connection to ADSL devices is not possible.

• Noise may occasionally be heard on other

lines during data communication depending on the condition of the indoor wiring.

To “DATA”

Computer

FAX

Polarity of the plug

To “LINE 1/LINE 1+2” and “LINE 3/LINE 3+4”

Assigning station number

Ensure to connect all phones (IT-M804 or IT-M704) to LINE 1 jack correctly, and then assign the station number to all phones. To confirm the assigned station number is set correctly, make an intercom call one another. See “Talking between the phones” on page 63.

Press (PROGRAM).

Turn Jog Dial up until “STATION #” appears on the display.

Press Jog Button.

STATION #=??

Enter the two digits station number (01 to 16) by pressing the dialing keys.

Press Jog Button. You will hear a long

confirmation beep.

Note

If the number already used for other phone or a number except for 01 to 16 is entered in step 4, “INVALID NUMBER” will be displayed. Enter the different number.

Tip

You can press (PROGRAM) instead of Jog Button in the procedure above.

Getting Started

Choose the dialing mode

For the telephone to work properly, select an appropriate dialing mode (tone or pulse).

When other phones (IT-M804 or IT-M704) are connected to the LINE 1 jack, the same dialing mode is automatically set to all the phones. Be sure to connect the phones beforehand, and set the dialing mode.

Press (PROGRAM).

Turn Jog Dial up until “DIAL MODE” appears on the display.

Press Jog Button.

TONE PULSE

Turn Jog Dial to choose the dialing mode (“TONE” or “PULSE”), and then press Jog Button.

You will hear a long confirmation beep.

Notes

• Do not allow more than 20 seconds to elapse between each step of the procedure.

• The dialing mode cannot be set for every line.

Tip

You can press (PROGRAM) instead of Jog Button in the procedure above.

If you aren’t sure of your dialing system

Make a trial call with the dialing mode set to “TONE”. If the call connects, leave the setting as is; otherwise, set to “PULSE”.

continued

Getting Started

Step 2: Setting up the phone (continued)

Enabling/disabling the line

When you may not use all four lines, you need to disable the unused line for the telephone to work properly.

This setting can be set up at each phone separately.

Getting Started

Note

You cannot disable the line 1.

Tip

You can press (PROGRAM) instead of Jog Button in the procedure above.

Getting Started

(ERASE/CLEAR)

Press (PROGRAM).

Turn Jog Dial up until “DISABLE LINE” appears on the display.

Press Jog Button.

LINE2

Turn Jog Dial to choose the line you want to change, and then press Jog Button.

ENABLE DISABLE

Turn Jog Dial to choose “ENABLE” or “DISABLE”, and then press Jog Button.

You will hear a long confirmation beep and the line next to the selected line will flash on the display .

Repeat steps 4 and 5 for other line setting, if necessary.

To end the setting, press (ERASE/CLEAR).

– 9 –

Identifying the parts

L2 L3 L4

Refer to the pages indicated in parentheses for details.

1 2 3

4 5 6 7 8 9 0 qa

qd qf qg qh

1 CALL WAITING/FLASH button

(p. 34, 60)

Switches to a second call if you have “call waiting” service, or lets you make a new call.

2 Display window (p. 37, 51) 3 ERASE/CLEAR button

(p. 40, 44, 53, 61)

Used to erase a stored one-touch dialing and Phone Directory memory or Caller ID data, end the operation during the procedure.

4 Speaker 5 Handset (p. 11, 28, 33) 6 PROGRAM button

(p. 16, 37, 52)

Used to access the menu.

7 LINE buttons (1, 2, 3, 4)

(p. 28, 33)

Lets you make or receive a call.

8 INTERCOM button (p. 63, 67)

Used to make an intercom call.

9 ALL PAGE button (p. 66)

Used to page all phones through the speakerphone.

0 CONF (conference) button

(p. 48, 67)

Lets you talk with two parties at the same time.

qa PAGE button (p. 65)

Used to page the other phone.

qs VOLUME +/- button (p. 29, 34) qd TONE button (p. 29)

Allows you to switch temporarily to tone dialing.

qf MIC (microphone) qg Dialing keys (p. 28) qh # button (p. 58)

Used to change the number of digits of the phone number in the Caller ID list.

qj Jog Button (p. 16) qk Jog dial (p. 16, 51)

w; wa

ws wd wf wg wh wj

Getting Started

continued

Identifying the parts (continued)

Getting Started

ql One-touch dial buttons

w; LOWER button (p. 37)

wa HOLD button (p. 29, 34)

ws TRANSFER button (p. 68)

wd REDIAL/PAUSE button (p. 31)

wf BUSY REDIAL button (p. 32)

wg MUTING button (p. 29, 34)

Getting Started

eae;

DATA LINE SELECTDATA

esed ef

(p. 37, 56)

Used to store numbers on the onetouch dial.

Used to store numbers in the second memory of a one-touch dial button.

Puts a call on hold.

Used to transfer a call.

Redials the last number called, inserts a pause in the dialing sequence.

Redials the last number called automatically when the line is busy.

Mutes your voice during a conversation.

eg eh

DO NOT DISTURB button

Used to turn off the call ringing and voice from the speaker.

wj SPEAKERPHONE (HEADSET)

button (p. 28, 29)

Used to make or receive a call through the speakerphone or the headset.

(p. 35)

wk DATA jack (p. 14) wl

DATA LINE SELECT switch

Used to select the line for data communication.

(p. 14)

e; LINE 1/LINE 1+2 jack (p. 12, 70) ea LINE 3/LINE 3+4 jack (p. 12, 70) es DC IN 12V jack (p. 12) ed Battery compartment (p. 71) ef Hook for AC power adaptor

cord (p. 12)

eg RESET button (p. 74) eh HANDSET jack (p. 11) ej I (HEADSET) jack (p. 29, 34)

Lamp indications

Lamp/button Lighting pattern Status

ek INTERCOM Lights up Calling extension from your phone or

el CONF Lights up This function is activated. r; NEW CALL Flashes There is new data in the Caller ID list.

ra MESSAGES Flashes There are voice mail messages.

rs LOWER Lights up Selecting the second memory of the

rd LINE 1 to 4 Lights up You are using this line.

rf BUSY REDIAL Lights up This function is activated. rg MUTING Lights up This function is activated. rh DO NOT DISTURB Lights up This function is activated. rj SPEAKERPHONE Lights up Talking through the speakerphone or

(HEADSET) headset, paging or busy redialing.

Lights up OFF

Flashes Receiving an intercom call.

Flashes Other phone using extension.

Flashes Receiving a call.

Flashes Call being held on your phone line or

Flashes Call being held on other phone line.

Flashes Receiving a transferred call.

Flashes Line is used by other phone.

conversation available.

one-touch dial button.

transferred call being made.

r; ra

rs rd

rf rg rh rj

Getting Started

Basics

Getting Started

(VOLUME)

Note

Tip

Basics

Making calls

TONE (*)

(HOLD)

(REDIAL/PAUSE)

(BUSY REDIAL)

(MUTING)

(SPEAKERPHONE)

(LINE 1) (LINE 2)

(LINE 3)

(LINE 4)

Pick up the handset (or press (SPEAKERPHONE)).

“=== TALK ===” appears on the display, and then the operation duration in hours, minutes and seconds is displayed.

The connected line button lights up.

When you want to select the line beforehand, press (LINE 1), (LINE 2), (LINE 3) or (LINE 4).

The corresponding line button lights up.

Dial the phone number. The phone number dialed

appears on the display.

When you’re done talking, replace the handset in the cradle (or press (SPEAKERPHONE)).

The disconnected line button goes off.

– 10 –

Making calls when the headset is connected

HANDSET

When the TL-HD1 headset (not supplied) is connected to the I (HEADSET) jack, you can talk through the headset.

Press (SPEAKERPHONE) (HEADSET). The SPEAKERPHONE lamp lights up.

Dial the phone number.

When you’re done talking, press (SPEAKERPHONE) (HEADSET).

The SPEAKERPHONE lamp goes off.

Notes

• If the headset is not connected, you will make a call through the speakerphone in step 1.

• If there is a line put on hold, you cannot make a call by just pressing (SPEAKERPHONE) (HEADSET) in step 1. Press a line button that is not used first, and then dial the phone number.

Additional tasks

To Do this

Adjust the handset or During phone conversation, press (VOLUME) headset volume (+) or (--). Each press of (VOLUME)(+) or (--)

Adjust the speaker volume During speakerphone conversation, press

Put a call on hold Press (HOLD). The line button on which a call is

Mute your voice Press (MUTING) to disable the microphone. The

Switch to tone dialing Press TONE (*) after you’re connected. temporarily The line will remain in tone dialing until

switches the handset or headset volume between “HIGH”, “MID” (middle) and “LOW”.

(VOLUME)(+) or (--). Each press of (VOLUME)(+) or (--) switches the speaker

volume by one of 16 levels.

put on hold will flash. Press (LINE 1), (LINE 2), (LINE 3) or (LINE 4) that is flashing to resume the conversation. The corresponding line button can be pressed on every phone.

MUTING lamp lights up. Press (MUTING) again to cancel.

disconnected.

Basics

Making calls (continued)

Notes

• When another extension connected to line is in use, the line button flashes.

• When another call comes in on the other line, the corresponding line button

flashes and two beeps are heard from the speaker, but the phone won’t ring. (see page 36).

• If a call is put on hold for more than about three minutes, you will hear an alarm.

Tips

• You can switch to speakerphone during conversation by pressing

(SPEAKERPHONE). Then you can replace the handset in the cradle. To switch back to the handset, pick up the handset again.

• When you pick up the handset or press (SPEAKERPHONE), the vacant line is automatically connected from line 1 to line 4. When neither line is in use, line 1 is connected.

To obtain the best speakerphone performance

• You may not be able to hear the other party’s voice in a noisy place. Therefore, use the speakerphone in a quiet room.

• Do not bring your hand or other objects too close to the microphone or you will hear a shrill noise (“feedback”).

Redialing

Pick up the handset (or press (SPEAKERPHONE)). “=== TALK ===” appears on the display. Press (LINE 1), (LINE 2), (LINE 3) or (LINE 4) to select the

line, if necessary. The corresponding line button lights up.

Press (REDIAL/PAUSE) to redial the last number dialed. The last number dialed appears on the display and is

automatically redialed.

Notes

• The last number dialed cannot be stored separately for each line. It is the very last one you have dialed using any line.

• If the last number dialed exceeds 32 digits or if it is erased, the number cannot be redialed.

Tip

To check the last phone number dialed

When not making a call, press (REDIAL/PAUSE). The number appears on the display for 20 seconds. To dial the number, pick up the handset (or press (SPEAKERPHONE))

while the number is displayed.

Note

“NO DATA” will appear on the display if the last dialed number exceeds 32 digits or if it is erased.

To erase the last phone number dialed

While the phone is not in use, press (REDIAL/PAUSE) twice within 20 seconds.

The number will be erased from the memory.

continued

Basics

Making calls (continued)

Busy redialing

If the other line you called is busy, the phone will automatically redial the last number dialed up to 10 times every 30 seconds until the call is connected.

When not making a call, press (BUSY REDIAL). The BUSY REDIAL lamp, MUTING lamp, SPEAKERPHONE lamp

and selected line button light up and the last number dialed appears on the display.

Notes

• Busy redialing is canceled when you press (BUSY REDIAL), or receive or make a call during busy redialing.

• If the last number dialed exceeds 32 digits or if it is erased, the number cannot be redialed.

Making another call while talking

Example: Making a call on line 2 while talking on line 1

Press (HOLD) while talking. The line 1 is put on hold and the LINE 1 button flashes

slowly.

Press (LINE 2).

Dial a phone number for the second party. Now you can talk to the second party on line 2. To disconnect line 2, press (LINE 1).

Notes

• If you do not press (HOLD) in step 1, line 1 will be disconnected.

• If a call is put on hold for more than about three minutes, you will hear an

alarm.

To talk with two parties at the same time using two lines, see “Having a three-way conference call” on page 48.

continued

Basics

– 11 –

Receiving calls

HANDSET

Receiving calls (continued)

When you hear the phone ring;

• Pick up the handset from the phone (or press (SPEAKERPHONE)).

• Press (LINE 1), (LINE 2), (LINE 3) or (LINE 4)

whichever button is flashing. The SPEAKERPHONE lamp

lights up and you can talk through the speakerphone. To talk through the handset, pick up it from the cradle.

The connected line button lights up. “=== TALK ===” appears on the display and the display also shows the operation duration in hours, minutes and seconds.

When you’re done talking, replace the handset in the cradle (or press (SPEAKERPHONE)).

The disconnected line button goes off.

(PROGRAM)

(VOLUME)

(LINE 1) (LINE 2)

(LINE 3)

(LINE 4)

Jog Dial

Jog Button

(CALL WAITING/FLASH)

(HOLD) (MUTING) (DO NOT DISTURB)

(SPEAKERPHONE)

When calls come in on two or more lines at the same time

Press (LINE 1), (LINE 2), (LINE 3) or (LINE 4) whichever button is flashing.

To put a call on hold or disconnect the line, see “Receiving a call while talking” on page 36.

continued

Basics

Receiving calls when the headset is connected

When the TL-HD1 headset (not supplied) is connected to the I (HEADSET) jack, you can talk through the headset.

When you hear the phone ring, press (SPEAKERPHONE) (HEADSET).

The SPEAKERPHONE lamp lights up.

When you’re done talking, press (SPEAKERPHONE) (HEADSET).

The SPEAKERPHONE lamp goes off.

Note

If the headset is not connected, you will receive a call through the speakerphone in step 1.

Additional tasks

To Do this

Adjust the handset or During phone conversation, press (VOLUME) headset volume (+) or (--). Each press of (VOLUME)(+) or (--)

Adjust the speaker During speakerphone conversation, press volume (VOLUME)(+) or (--). Each press of

Put a call on hold Press (HOLD). The line button on which a call is

Adjust the ringer volume Press (PROGRAM). Turn Jog Dial up until “RING

Mute your voice Press (MUTING) to disable the microphone. The

Switch to another call on Press (CALL WAITING/FLASH). (“call waiting” service*) Press (CALL WAITING/FLASH) again to return to

* You need to subscribe to the service from your telephone company.

Basics

switches the handset or headset volume between “HIGH”, “MID” (middle) and “LOW”.

(VOLUME)(+) or (--) switches the speaker volume by one of 16 levels.

put on hold will flash. Press (LINE 1), (LINE 2), (LINE 3) or (LINE 4) that is flashing to resume the conversation. The corresponding line button can be pressed on every phone.

VOLUME” appears on the display, and then press Jog Button. Turn Jog Dial to choose “HIGH”, “MID” (middle), “LOW” or “OFF”, and then press Jog Button. You will hear (monitor) the phone ring with the adjusted level. While the phone is ringing, you can adjust the ringer volume by pressing (VOLUME)(+) or (--), however, the ringer volume cannot be set to “OFF”.

MUTING lamp lights up. Press (MUTING) again to cancel.

the first caller.

If you have subscribed to the Caller ID service including the caller name service;

- the caller’s number and/or name appears on the display, and the date and time are automatically set when you receive a call (see page 50).

- the ringer sound changes to a higher tone if the call matches the number stored on one-touch dial button or in the Phone Directory (memory match function; see page 50).

Notes

• When another phone connected to line is in use, the line button flashes slowly.

• If a call is put on hold for more than about three minutes, you will hear an alarm.

Using Do Not Disturb

Making calls is available even if this function is activated. While the phone is not in use or the phone is ringing, you can press

(DO NOT DISTURB). The DO NOT DISTURB lamp lights up. To cancel this function, press (DO NOT DISTURB) again.

Note

An outside call cannot be transferred to the phone with the “DO NOT DISTURB” function activated.

Basics

Receiving calls (continued)

Receiving a call while talking

If another call comes in while talking on the other line, the corresponding line button will flash and two beeps will be heard from the speaker.

Example: Receiving a call on line 2 while talking on line 1

Press (HOLD). Line 1 is put on hold and the LINE 1 button flashes slowly.

Press (LINE 2). Now you can talk to the other caller on line 2. To disconnect line 2, press (LINE 1).

Note

If you do not press (HOLD) in step 1, line 1 will be disconnected.

To talk with two parties at the same time using both line 1 and line 2, see “Having a three-way conference call” on page 48.

continued

Basics

– 12 –

SECTION 2

DISASSEMBLY

Note : This set can be disassemble according to the following sequence.

Set

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

2-1. CABINET (UPPER) ASSY

Cabinet (Upper) Assy Speaker (LS1)

Main Board Key Board, LCD Board (IT-M704)

Key Board, LCD Board (IT-M804)

3 BTP 3x10

2 BTP 3x10

1 BTP 3x10

4 BTP 3x10

cabinet (lower) assy

cabinet (upper) ass

5 CN9

6 CN6

– 13 –

7 cabinet (upper) assy

2-2. SPEAKER (LS1)

1 BTP 3x8

2-3. MAIN BOARD

2 claws

holder (speaker)

5 BTP 2.6x6

4 speaker

(LS1)

3 claw

3 BTP 2.6x8

4 cover (jack)

8 claws

cabinet (upper)

2 BTP 2.6x8

9 box (battery)

0 Removal the solder.

7 claws

6 MAIN board

1 lid, battery cas

– 14 –

2-4. KEY BOARD, LCD BOARD (IT-M704)

4 KEY board

3 BTP 2.6x6

0 BTP 2.6x6

2 BTP 2.6x6

1 CN952

5 BTP 2.6x6

6 BTP 2.6x6

9 BTP 2.6x6

8 BTP 2.6x6

7 BTP 2.6x

qa button (one-touch)

qs LCD board

2-5. KEY BOARD, LCD BOARD (IT-M804)

2 BTP 2.6x6

3 BTP 2.6x6

4 KEY board

5 BTP 2.6x6

qa BTP 2.6x6

1 CN952

qs claws

6 BTP 2.6x6

0 BTP 2.6x6

7 BTP 2.6x6

qf LCD boar

qd chassis (M804)

9 jog (dial)

8 guide (jog)

– 15 –

SECTION 3

TEST MODE

This set provides the Test Mode. When servicing the set, the Test Mode should be performed according to the test items, selecting methods and procedures given below:

Test item Selecting method LCD display Procedures

1) Enter the Test Mode. Hold down PROGRAM TEST MODE Idling state in the Test Mode. key and 5 key and turn on the power.

2) LCD test Press PROGRAM 1 All LCD indicators ON.

t 0 t 1 key. 2 All LCD indicators OFF .

1 and 2 are repeated.

3) DATA carrier Press PROGRAM 450 kHz DATA Tx Continuous transmission of carrier signal (450 kHz). t 0 t 2 key.

4) Intercom call test Press PROGRAM INTERCOM 321 kHz (1) Handset call

(when calling) t 0 t 3 key. (transmit frequency)/ When the handset is hooked off, the extension handset call *1) MOD TX DATA (when transmit and reception paths are opened. The handset VR is

modulation data is sent) then active and its sound level is displayed.

(2) Headset call

When the headset plug is inserted and then the SPEAKER press is pressed, the extension handset call transmit and reception paths are opened. The headphone VR is then active and its sound level is displayed.

(3) Speaker phone call

When the headset plug is removed and then the SPEAKER key is pressed, the extension handset call transmit and reception paths are opened. The SP VR is then active and its sound level is displayed.

(4) Transmit modulation data ON/OFF

The key is used to start sending the transmit modulation data. The # key is used to stop sending.

5) Intercom call test Press PROGRAM INTERCOM 281 kHz (1) Handset call

(when called) t 0 t 4 key. (transmit frequency)/ When the handset is hooked off, the extension handset call *1) MOD TX DATA (when transmit and reception paths are opened. The handset VR

modulation data is sent) is then active and its sound level is displayed.

(2) Headset call

(3) Speaker phone call

When the headset plug is removed and then the SPEAKER key is pressed, the extension handset call transmit and reception paths are opened. The SP VR is then active and its sound level is displayed.

(4) Transmit modulation data ON/OFF

The key is used to start to send the transmit modulation data. The # key is used to stop to send.

6) Extension data Press PROGRAM MOD. TX DATA The extension data is equivalent to PN 9 and 127 bytes are

transmission t 0 t 5 key. (450 kHz) sent once. *2) The data is repeatedly sent 5 sec after it has been sent.

Start to send: Hook off the handset or press the SPEAKER key. Stop to send: Hook on the handset or press SPEAKER key. 450 kHz carrier, transmit data path is opened.

Note:

*1) Each of 4) Extension Call Test (when calling) and 5) Extension Call T est (when called) may be completed by using one set. However , one set at the calling

side and one set at the called side should be used to ensure that these tests can be completed.

*2) 6) Extension Data Transmission may be checked by one set. However, another set should be used at the called side to ensure that this transmission can be

checked.

*3) Another set must be used at the calling side so that 7) Extension Data Reception can be checked.

– 16 –

Test item Selecting method LCD display Procedures

7) Extension data Press PROGRAM RX DATA receiving state Waiting state. reception t 0 t 6 key. display Hook on the handset or press the SPEAKER key. *3) LCD display: Rx OK = xxx ER = xxx

When the transmit data is received, the display is updated.

8) Key Press PROGRAM Input key: To exit this mode, press the SPK PHONE key twice.

t 0 t 7 key. Press the following buttons in sequence. When the contact is

OK for each key input, a beep sounds to inform that the input is accepted. When the last key is pressed, an OK sound is heard. IT-M804: (1) OFF HOOK and ON HOOK, (2) JOGDIAL right and left buttons, (3) ERASE, (4) FLASH, (5) ONE TOUCH 1 to 8, (6) PROGRAM, (7) LOWER, (8) LINE 1 to 4, (9) INTERCOM, (10) CONF, (11) TRANSFER, (12) HOLD, (13) ALL PAGE, (14) PAGE, (15) VOLUME UP and DOWN, (16) 1 to 9, , 0, and #, (17) REDIAL, (18) BUSY REDIAL, (19) MUTE, (20) DND, and (21) SPK PHONE IT-M704: (1) OFF HOOK and ON HOOK, (2) ERASE, (3) FLASH, (4) ONE TOUCH 1 to 14, (5) PROGRAM, (6) LOWER, (7) LINE 1 to 4, (8) INTERCOM, (9) CONF, (10) TRANSFER, (11) HOLD, (12) ALL PAGE, (13) PAGE, (14) VOLUME UP and DOWN, (15) 1 to 9, , 0, and #, (16) REDIAL, (17) BUSY REDIAL, (18) MUTE, (19) DND, and (20) SPK PHONE

9) LED Press PROGRAM LED indicator illuminated The illuminated LED indicator switches very 500 mS.

t 0 t 8 key. and name displayed The name appears at the right of the illuminated LED indicator:

(1) NEW CALL, (2) VMWI, (3) LOWER, (4) LINE1, (5) LINE2, (6) LINE3, (7) LINE4, (8) INTERCOM, (9) CONF, (10) BUSY REDIAL, (11) MUTE, (12) DND, (11) SPK PHONE and (14) OFF These (1) to (14) LED indicators are illuminated in turn.

10) Bell Press PROGRAM Bell level display RINGER VR can be used to switch the bell level.

t 0 t 9 key. HIGH/MID/LOW/OFF Press the # key to stop the bell..

11) Ring back tone Press PROGRAM RING BACK TONE Press the key to start the ring back tone.

t 1 t 0 key. Press the # key to stop the ring back tone.

12) Key touch tone Press PROGRAM KEY TONE Press the key to start the key tone.

t 1 t 1 key. Press the # key to stop the key tone.

13) LINE connection Press PROGRAM LINE TEST When the handset is hooked off or the SPEAKER key is pressed

t 1 t 2 key. (with the privacy function released), all LINE keys (L1 to L4) are

accepted and the selected lines are all closed. This mode is active when any of the handset, headset and speaker phone is used. To release this mode, hook off the handset and press the SPEAKER key.

D signal send The above test mode LINE TEST D Press ALL PAGE to turn on this mode. Press PAGE to turn off

the mode.

14) FSK detect level, L1: Press PROGRAM L1 CAS TEST (LINE1 ON) after call incoming t 2 t 1 key. bell, during call L2: Press PROGRAM L2 CAS TEST (LINE2 ON) Press SPEAKER PHONE to release this mode.

t 2 t 2 key. L3: Press PROGRAM t 2 t 3 key. L4: Press PROGRAM t 2 t 4 key.

15) STUTTER TONE Press PROGRAM STUTTER TEST When the stutter tone is detected with the LINE1 key held detect level t 1 t 9 key. down, the message lamp flashes.

16) ROM VERSION Press PROGRAM The ROM version of this set is displayed. display t 9 t 9 key.

17) Display of security Press PROGRAM SECURITY=

t 8 t 8 key. (Number of four figure)

****

Check to security code called user for phone directory.

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