Removing and installing APS radio and navigation operating unit - AR82.61-P-7412B

MODEL 129, 140 as of 1.1.98, 168,202 as of 1.1.98,208,210 as of 1.1.98 with CODE (351) Auto-pilot system (APS) 

MODEL 129, 140, 168, 170, 202, 208, 210 with retrofitted auto-pilot system (APS) 

Illustrated on model 129 

Fig 1: Identifying APS Radio And Navigation Operating Unit

	Removal, installation
1	Connect quiescent current retention unit		*WH58.30-Z-1012-09A
2	Disconnect and connect ground lead from battery	On model 210 insulate cable terminal on ground lead for protection against unintentional contact between disconnected ground lead and ground connection point W10	AR54.10-P-0003A
3	Remove radio and navigation operating unit (APS) (A2/29)	For this purpose, insert removal plates (1) ↓ Press back retaining springs (arrow) on removed radio and navigation operating unit (APS) and pull out removal plates (1)
4	Disconnect electrical connectors on rear of radio and navigation operating unit (APS) (A2/29)
5	Activate unit code for APS	Is necessary only when a new radio and navigation operating unit is put into operation for the first time	AN82.61-P-1000-01A
6	Install in opposite order	Voice prompt is loaded automatically within 20 minutes after connecting the battery