Electrical Components And Their Functions - Canon EOS 7 Service Manual

3. ELECTRICAL COMPONENTS AND THEIR FUNCTIONS

No. Code Applicable Unit
1 MPU MAIN
2 OSCM MAIN
3 CMPU1 MAIN
4 CMPU2 MAIN
5 CMPU5 MAIN
6 CMPU6 MAIN
7 CVRH2 MAIN
8 CLREQ MAIN
9 RVRH MAIN
10 RPTIN MAIN
11 ROSCM MAIN
12 RLREQ MAIN
13 EEPROM MAIN
14 CEE MAIN
15 EMI1 MAIN
16 EMI2 MAIN
17 RAE MAIN
18 CAE MAIN
19 OPAMP1 MAIN
20 CAMP MAIN
21 CDA1 MAIN
22 CDA2 MAIN
23 RDA1 MAIN
24 RDA2 MAIN
25 RDA3 MAIN
26 RDA4 MAIN
27 RDA5 MAIN
28 RDA6 MAIN
29 DXON MAIN
30 CDX1 MAIN
31 CDX2 MAIN
32 CDX3 MAIN
33 CDX4 MAIN
34 CDX5 MAIN
35 RDX1 MAIN
36 RDX2 MAIN
37 CE2 MAIN
38 TRBC MAIN
39 RBC1 MAIN
40 RBC2 MAIN
41 RBC3 MAIN
42 COMPIC MAIN
43 GATEIC MAIN
44 TRFLED MAIN
45 CFLED1 MAIN
46 CFLED2 MAIN
47 RFLED1 MAIN
Function
Microcomputer for camera control
Microcomputer's oscillator
MPU power source (VDD) smoothing capacitor
MPU power source (VDD3) smoothing capacitor
MPU power source (VDD) smoothing capacitor
MPU power source (VDD3) smoothing capacitor
Standard power source-stabilizing capacitor
Signal-stabilizing capacitor
Standard power source-stabilizing resistor
PTIN detection resistor
Oscillator circuit resistor
Signal-stabilizing resistor
Data memory IC
EEPROM capacitor
MPU power source (VDD) EMI filter
MPU power source (VDD3) EMI filter
AE sensor operation-stabilizing resistor
AE sensor operation-stabilizing capacitor
DAC voltage conversion OPAMP
OPAMP1's smoothing capacitor
MPU's DAC output-stabilizing capacitor
MPU's DAC output-stabilizing capacitor
OPAMP's standard voltage-dividing resistor
OPAMP's standard voltage-dividing resistor
OPAMP1 operation-stabilizing resistor
OPAMP1 gain-determining resistor
OPAMP1 gain-determining resistor
OPAMP operation-stabilizing resistor
DX-reading control transistor
DX terminal noise-countering capacitor
DX terminal noise-countering capacitor
DX terminal noise-countering capacitor
DX terminal noise-countering capacitor
DX terminal noise-countering capacitor
DX terminal pull-up resistor
DX terminal pull-up resistor
E2 system-stabilizing capacitor
Battery check load-applying transistor
Battery check load resistor
Battery check load current-measuring resistor
Transistor driving resistor
FLED drive control comparator
FLED drive circuit logic
FLED drive FET
Power source-stabilizing capacitor for FLED drive
control circuit
Power source-stabilizing capacitor for FLED drive
control circuit
FLED drive control resistor
2-25
Part 2: Technical Information