Field Changes Of Components On The Main Board; Delegate- And Chairman Unit Component Values; Diagram And Board Layout Of Hw 01-02 - Bosch CCS800 Service Manual

CCS800 | Service manual | Chapter 8 | New mic assy on an old del-/ chairman unit
8.4

Field changes of components on the main board

In case the microphone assembly has been replaced and light output of the led ring is too low in respect to the installed
units, change the components R169 and R170 on the main board in order to increase the led current.
8.4.1

Delegate- and chairman unit component values

Type numbers
LBB 3330 & LBB 3331
8.4.2

Diagram and board layout of HW 01-02

Note
For current version diagram and board layout see chapter 13.10 and 13.12.
Bosch Security Systems | 2005-01| 3922 880 21112
Hardware release Old mic head led resistors
≤ 01-02
R169 = 330E & R170 = 330E
en | 42
New mic head led resistors
R169 = 150E & R170 = 180E