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Hologic-Lorad M-IV乳腺X光机英文维修手册-4
Service Manual
4.6 Mains Power Board
Tables 7-7 and 7-8 show the test points and their voltages or signals, or the resistance on the Mains Power
Board. When taking measurements, connect the voltmeter ground appropriately according to the table below.
Table 7-7: Mains Power Board Test Point Voltages
TEST POINT VOLTAGE/SIGNAL GROUND
TP1 +24V TP8
TP2 +24V TP8
TP6 LINE VOLTAGE TP8
TP8 PULSE TP8
Table 7-8: Switch Test Points
TEST POINT RESISTANCE GROUND
TP3 Less than 5Ω TP8
TP4 Less than 5Ω TP8
TP5 Less than 5Ω TP8
Note …Measure resistance with circuit breaker (CB1) OFF.
4.7 C-arm Microprocessor Board
Table 7-9 shows the test points and their voltages or signals on the C-arm Microprocessor Board. When taking
measurements, connect the voltmeter ground appropriately according to the table below.
Table 7-9: C-arm Microprocessor Board Test Point Voltages
TEST POINT VOLTAGE/SIGNAL GROUND TEST POINT VOLTAGE/SIGNAL GROUND
TP1 VCC TP2 TP2 DGND
TP3 CLK TP2 TP4 SEL TP2
TP5 MISO TP2 TP6 MOSI TP2
TP7
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