00198150-02_SM_TX_en.pdf - 第55页
3 SMPS 3.9 Replacing the Distribution and Fusing Assembly Service Manual SIPLACE TX Series 06/2017 55 3.9 Replacing the Distribution and Fusing Assembly Parts, equipment and tools ● Distribution and fusing board assembly…
3 SMPS
3.8 Replacing the AC/DC Converter
54 Service Manual SIPLACE TX Series 06/2017
Removal
► Switch off the machine, disconnect it from the power supply and secure it to prevent
unauthorized reactivation. Observe the instructions in section 1.2 "Preparatory Work..." [}15].
► Remove the power supply fastening screw and pull out the power supply. For more informa-
tion about this read section 3.2 "Pulling out the Power Supply" [}35].
DANGER
Checking for absence of voltage!
► Before you start working check the power supply for absence of voltage and observe
the waiting times! For more information about this read section 3.4 "Checking For Ab-
sence of Voltage" [}37].
► Unplug all electrical connections from the AC/DC converter. Mark their positions to make clear
assignment easier later on.
► Push the unlock handle and tilt this slightly upwards. Now take the AC/DC converter up and
off.
Installation
► Follow the removal instructions in reverse order for installation. Also observe the following in-
structions:
Fig.52: Setting screw
Setting the voltage:
► Open the protective cap on the setting screw(1).
► Use a slotted screwdriver to set the correct
voltage on the AC/DC converter.
Check the voltage with a suitable voltage meas-
uring device between the terminals + and–.
3 SMPS
3.9 Replacing the Distribution and Fusing Assembly
Service Manual SIPLACE TX Series 06/2017 55
3.9 Replacing the Distribution and Fusing Assembly
Parts, equipment and tools
●
Distribution and fusing board assembly TX [03121508‑xx]
Overview
Fig.53: Distribution and fusing board assembly
1. Distribution and fusing board assembly TX
See also the board description: 3.9.1 "Distribution and
Fusing Assembly [03121508-xx]" [}56]
Removal
► Switch off the machine, disconnect it from the power supply and secure it to prevent
unauthorized reactivation. Observe the instructions in section 1.2 "Preparatory Work..." [}15].
DANGER
Checking for absence of voltage!
► Before you start working check the power supply for absence of voltage and observe
the waiting times! For more information about this read section 3.4 "Checking For Ab-
sence of Voltage" [}37].
Fig.54: Fastening screws
► Unplug all electrical connections to the board.
You might like to mark their positions to make
clear assignment easier later on.
► Remove the fastening screws on the board and
the earth conductor.
► Remove the board.
Installation
► Follow the removal instructions in reverse order for installation.
3 SMPS
3.9 Replacing the Distribution and Fusing Assembly
56 Service Manual SIPLACE TX Series 06/2017
3.9.1 Distribution and Fusing Assembly [03121508-xx]
Fig.55: Distribution and Fusing Assembly [03121508‑xx]
Fuses
●
Fuse 5x20mm T6,3A 400VDC [03133256‑xx]
●
Micro fuse 5x20 / T 10A / ceramic [03010627‑xx]
●
Fuse F10 "power fail signal":
Check functionality with LED D24 (on the right side of XB8A).
While the machine is running the LED D24 is on and the power fail functions of the subsys-
tems are active.
The fuse voltage can be checked at connector X26, pin 2 (24V).
If fuse F10 is blown replace the board "distribution and fusing assembly" [03121508‑xx].
●
Fuse F13 "internal electronic and diagnostics":
Check functionality with LED D2 (above X8).
If fuse F13 is blown replace the board "distribution and fusing assembly" [03121508‑xx].
NOTICE
F13
The fuse may be removed from the fuse holder, but in most cases the holder is broken after
this.