Siemens BTC-BR Manual Página 112

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3 Removing and fitting housing
3–20 Section 3 © Siemens VDO Trading GmbH TU00-1318-0200302
3.6.6 Converting a series v board into a service version (until 10.94)
Fig. 3-12 Converting a series v board into a service version (until 10.94)
Procedure
Unsolder SMD resistors (1).
Solder two traditional resistors (2) KN53.0291.080, R = 620Ω.
Solder potentiometer (3) HW11.461, R = 10 KΩ.
Disconnect connectors at positions (4) and (5).
Note
NO µP version.
Service version 1318.89.4xx.11 and .89.7xx.11.
Balancing is done as standard with three SMD resistors (1) that are solde-
red directly to the v board (without laser trimmed plates).
4
3
4
5
1
2
1318.71.400.11
1318.71.400.12
Front
Back
1 Conductor 4 Resistors
2 Conductor 5 Potentiometer
3 SMD resistors
Remark
Do not damage conductors.
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