Electro-Voice CPS 1, Service Manual

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1
MEASUREMENT SPECIFICATIONS: CPS1 & CPS2 complete appliance
printed board assembly names and their corresponding EDP-numbers:
Printed board assembly EDP-number
120V 230V
CPS1 CPS2 CPS1 CPS2
84183 84184 84181 84182
Printed board assembly Index
Main PCB 1
Supply PCB 4
Input PCB 2
LED PCB 3
measuring condition; if not otherwise specified:
- tolerance of measured values:
∆
X = ±1.5 dB
- measuring frequency: f = 1 kHz
- stated levels refer to: U = 775 mV (0 dBu)
- level controls set to their clockwise limits
- pin assignment of the XLR-type connectors: PIN 1: ground / shielding
PIN 2: + INPUT
PIN 3: - INPUT
- source resistance for the induction via the XLR-type connector: R(Q) = 50
Ω
- the AMPLIFIER PCB printed board assembly is provided with service connectors
CNS1 CNS2 CNRC
PIN assignment PIN assignment PIN assignment
1 -Vcc 1 LIM A Switch 1 LIM Out A
2 BIAS +A 2 -15V 2 LIM Out B
3 BIAS -A 3 LIM B Switch 3 Standby via RC
4 FAN Voltage 4 +15V 4 Standby LED
5 +Vcc 5 AGND 5 -Vss
6 BIAS +B 6 Speaker Out A 6 +Vss
7 BIAS -B 7 Relais/Protect 7 n.c.
8 Temp Heatsink 8 Speaker Out B 8 n.c.
1. Operating voltage: U(B) = 120V, 230V, 240V 50Hz ... 60Hz
2. Deviation limit of the operation voltage: -30% .... +10%
3. Power consumption (both channels driven) f = 1kHz
CPS1 CPS2
Idling power consumption 30-60W 40-80W
Nominal power consumption (RL=4
Ω
)
1400W 1900W
Standard power consumption (RL=4
Ω
) 430W 600W
Maximum power consumption (RL=4
Ω
)
1650W 2100W
Power consumption at 1/8 of the maximum output power 690W 870W