Control Line Test With Mode Switch (B) - Bosch CCS800 Service Manual

CCS800 | Service manual | Chapter 7 | Diagnostics and faultfinding
7.3.13

Control line test with mode switch (B)

Connect a current source of 0.5mA ±0.03mA to the control-line CTRL-L1 via M4 Set the "mode switch" (S2) is each
position and measure the voltages at M4 related to M2 (GND)
Mode switch
Position
(S2)
Auto-1
Auto-2
Auto-3
Auto-4
Open-1
Open-2
Open-3
Open-4
Tolerances: CTRL-L1 incl. current levels is ±250mV
NOTE: Set the mode switch (S2) back to the minimum left position 'Test'.
Reference: S2
X2
Bosch Security Systems | 2005-01| 3922 880 21112
Measurement values for A1 (V) Including current
M4
(Control-L1)
≥11.8
5.83
4.5
3.93
≥11.8
5.83
4.5
3.93
See Ch. 13.5
See Ch. 13.7
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