Sedecal SPL-HF 2.0, Service Manual

Page: 99 / 222

Portable X-ray Units
Service Manual
SM-1076R2 89
5.3.13 FILAMENTS HF BOARD
1. Access inside the Unit by removing Upper and Lower Covers and
unscrewing the Connectors Panel (
refer to Section 5.3.1 ).
2. Remove the two Ribbon cables connected to J1 and J2 of the Filaments
HF Board (
A9500--01 ).
3. Carefully unscrew the four (4) nuts and washers that assemble the
Filaments HF Board (
A9500--01 ) to the Control Driver Board
( A3189--04 ). These screws are the contacts for 0 V, +15 V, DC--BUS (+)
and DC--BUS (--). Carefully remove the board.
DC--BUS (+)
+ 15 V 0 V
DC--BUS (--)
J 1
J 2
4. Replace the Filaments HF Board ( A9500--01 ), reconnect and assemble
in reverse order.