Service manual
Page 27
SVR-250 Service Manual
R52 ................................................................................... 68 Ohm chip resistor ........................... 2010-02-5680
R53,R68 ............................................................................ 1.0K chip resistor ................................ 2010-02-5102
R54,R55 ............................................................................ 620 Ohm 1206 chip resistor ................ 2010-04-5621
R65 ................................................................................... 15K chip resistor ................................. 2010-02-5153
R67 ................................................................................... 470 Ohm chip resistor ......................... 2010-02-5471
S2,S3 ................................................................................. 3x6mm Tact Switch ............................ 7010-06-0101
TP1, Rx Ant, Tx Ant ........................................................ 1 pin header ......................................... 7300-13-0101
U1,U16 ............................................................................. TC2272 dual op-amp .......................... 3410-01-2272
U2 ..................................................................................... LM386 audio amp ............................... 3410-01-0386
U3 ..................................................................................... AT89C51RB2 Microprocessor ........... 3611-02-8951
U4 ..................................................................................... 24C128 Serial E²PROM ..................... 3610-01-4128
U5 ..................................................................................... MCP101-450 reset controller.............. 3410-11-0450
U6 ..................................................................................... 74HC595 Shift Register ...................... 3510-01-4595
U7 ..................................................................................... LM7805CV 1.5A reg D2PAK ........... 3410-27-7805
U8 ..................................................................................... LM7809CV 1.5A reg D2PAK ............ 3410-27-7809
U10,U11 ........................................................................... CMX881E1 Signal Processor ............. 3710-19-0881
U12,U13 ........................................................................... LM321 op-amp SOT23-5 .................... 3410-12-0321
U14 ................................................................................... MAX202 RS232 Driver ...................... 3410-01-0202
U15 ................................................................................... MHC544 Antenna Switch ................... 3810-03-0544
U17 ................................................................................... 4053 Analog Mux ............................... 3410-01-4053
VAR1 ................................................................................ 18V MOV ........................................... 2580-02-0018
X1 ..................................................................................... 18.432 MHz CSM7 ............................. 6010-01-1843
Extruded aluminium case .................... 8100-01-0250
Aluminium end panel simplex ............ 8200-04-0250
Alumunium end panel duplex ............. 8200-04-0252
Rear panel gasket ................................ 8200-07-0252
2.125" Dual MCX cable ..................... 7504-02-0505
10ft. radio cable with DB-15F conn. .. 7500-10-1201
Shorting block for JP1 ........................ 7200-03-0102
Mounting bracket ................................ 9600-05-0250
4-40 SS jack screw .............................. 8000-42-4404
8-32 x ¼" SS philips ........................... 8000-24-8324
8-32 x 3/8" SS cap screw .................... 8000-34-8323
4-40 x ¼" SS philips ........................... 8000-24-4404
2-56 x 3/16" SS philips ....................... 8000-24-2563
2-56 x 1/8" aluminium spacer ............ 8000-65-2562
2-56 x 1/4" aluminium spacer ............ 8000-65-2564
Aluminium heat sink (U7 & U8) ........ 8400-05-0250
Right Angle heat sink (Tx module) .... 8400-05-0008
RF Shield Enclosure ........................... 8100-02-0210
RF Shield Lid ...................................... 8100-02-1210