Toa EX-610 Скачать руководство пользователя страница 36

Страница: 36 / 37

10-4 Simple troubleshooting

Delimitative point for system check

A system is checked for the following delimited portions.

(5) Symptom

Cause —

No fully-duplex (simultaneous) conversation is
made when handset is lifted. (HF-200M and TL-
600).

Hook switch in printed circuit board is faulty if

state remains the same despite replacement of
station printed circuit board.

Forty Hertz (40Hz) oscillator is faulty . . . Both

conversation and dialling are possible.

Exchange check

An exchange is checked for the following delimited portions.
(1) Speech path section SG-62, DL-62A, LM-62B, PI-62, CL-62A,

TI-62,andSA-64

(2) Speech path control section CP-66, OC-62, HC-62, and HC-64
(3) Power supply section DS-610, DS-620 and DS-630

Line Check

Line faults are checked with the LED lamps of the LM. The LED

lamps light orange in an normal condition.

(1) Symptom — No LED lights up.

Cause — L1 and L2 have broken in most cases.

(2) Symptom — When a call is made, two speech links are connected

at a time.
Cause — L1 or L2 is connected to the other station.

(3) Symptom — The lamps of the LM are lighting yellow.

Cause — L1 and L2 are short-circuited.

(4) Disconnect the lines from both the exchange and station and

only check the lines for the following.

Whole system check

(1) Confirmation of numbering schedule

Points to check for numbering schedule
Are stations of the same paging group numbered consecutively?

Is the maximum number of paging groups two for the same LM

unit?
Confirm if stations are grouped correctly for calling party indica-

tion.

Confirm  if the  station indicated on the in/out annunciation
board by the personal  number is in the correct  place (office).
Confirm  if the station  is connected to the corresponding termi-

nal of the terminal box.

(2) Confirmation of power fuse current capacity (DS-610/620/630)
(3) Confirm if the CP DIP switches are properly set for each func-

tion.

(4) Confirm if a memory backup jumper of the CP is set to ON.
(5) Confirm if the exchange is wired properly as planned in the

station paging group numbering schedule.

(6) Confirm wiring of the paging assignment unit.
(7) Confirm the channel number of the DT-E60.
(8) Confirm if both the YR-810 and YR-801 cables are used proper-

ly.

(9) Confirm that setting the power switch to ON causes all link busy

indicators on the HC to go out.

(10) Set the front-mounted program switch of the CP to ON.
(11) Make the exchange initial setting. (Turn off the program switch

after setting.)

(12) Perform link tests.
(13) Perform speech tests by calling other stations from the station

No. 200.

(14) Turn on the CP program switch.

(15) Program each function into the exchange from the station No.

200.

(16) Perform function tests.
(17) Check battery connection.

Between the BX-610/620 and YC-601/603
Ground to station insulation (Over 1Mi7)

Insulation between lines (Over 1Mft)

Resistance (Below 100S7 for 1km with 0.65mm thick cable)

Station

A station can be divided into the following portions.

(1) Microphone circuit and amplifier

(2) Keyboard and dial signal transmitter
(3) Speaker
(4) Power supply

To find cause of failures,  check for the following  symptoms  first
because the failures, for the  most  part, show such symptoms. When
there is a failure, however, first replace the station with one which
works normally. If the symptom remains unchanged, then the
trouble  lies in the station or in the line. If the station replacement
causes the state to return to normal, then the trouble lies in the
station.

In-use lamp does not come on when dialled.
LED is faulty

Dialling is possible.

Power supply section is faulty

No dialling is

possible.

(1) Symptom

Cause —

(2) Symptom

Cause —

M5 (HB 1C) is faulty

Dialing is possible

No dial tone is audible when dialled.
Speaker wires are broken ... No tone.
Transformer wires are broken.