Toshiba DK 16, DK8 manual Chart NO.8 Remote Maintenance Faults

FAULT FINDING

SECTION 100-816-500

MARCH 1993

CHART NO.8

REMOTE MAINTENANCE FAULTS

START

If a Digital or Electronic telephone is in the programming mode, it is not possible to enter the Remote Maintenance mode.

Read the Remote Maintenance Section 100-816-600, Paragraphs 1 to 7. This chart assumes that the remote terminal and modem have no fault and that Remote Maintenance does not operate.

On DK16, check that the IMDU, PIOU, or PIOUS is installed correctly per Section 100- 816-205.

On DK16, check that the baud rate switch (SW2, push-button switch on PIOU/PIOUS) is set to the correct position (300 bps LED ON, 1200 bps LED OFF) to match the remote terminal baud rate.

QSMU, TTY Port is 1200 bps only.

Correct as necessary.

8-1

External modem connected to QSMU, PIOU, PIOUS TTY port

8-2

On DK8, check that Prog. 10-3, LED 04 is on for QSMU TTY operation. Check that the communication parameters of the remote terminal are set to match the TTY port (7-data bits, even-parity, 1-stop bit).

On DK16, check that PIOU/PIOUS SW3

switch

is in the TTY position.

Correct as necessary.

8-3
Is the	YES
fault
cleared?

NO

Check that the modem or terminal connected

Is Remote

Maintenance connection

via external modem on TTY

port or IMDU

modem?

END

IMDU modem installed on

PIOU or PIOUS (DK16 only)

8-4

Check that the communication parameters of

the remote terminal are set to match the IMDU (7-data bits, even parity, 1-stop bit).

Check that the PIOU/PIOUS SW3 switch is in the MODEM position.

•Enable the IMDU by turning LED 14 ON in Program 77-1.

•If required, assign CO lines for DISA or to ring IMDU in system Program 78, Code 51~53.

•When calling IMDU via DISA or ring transfer, dial 619.

Correct above if necessary or

replace IMDU or PIOU(S).

8-5

Is the

fault

cleared?

to the TTY port is wired correctly per the Remote Maintenance Section 200-816-600 and QSMU, PIOU/PIOUS MDF wiring in Section 100-816-208.

Correct above if necessary or replace QSMU, PIOU or PIOUS.

• On DK16, the TTY port is the top
modular jack (SMDR is bottom) of
the PIOU/PIOUS.	Call your technical
• On DK8 & DK16 the modular cord
	support group.
connecting the TTY port to the
terminal or external modem must be
6-wires.

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