Bosch CCS800 - Control Line Test with Mode Switch (B)

CCS800 | Service manual | Chapter 7 | Diagnostics and faultfinding en | 32
Bosch Security Systems | 2005-01| 3922 880 21112
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 Measurement values for A1 (V) Including current
Position
(S2)
M4
(Control-L1)
Auto-1
≥11.8
Auto-2 5.83
Auto-3 4.5
Auto-4 3.93
Open-1
≥11.8
Open-2 5.83
Open-3 4.5
Open-4 3.93
Tolerances: CTRL-L1 incl. current levels is ±250mV
NOTE: Set the mode switch (S2) back to the minimum left position ‘Test’.
Reference: S2 See Ch. 13.5
X2 See Ch. 13.7