Yaesu FT-208R, Maintenance Service Manual

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P L L U N I T VOTAG E C H A R T
PLL UNIT
VOLTAGE CHART (DC VOLTS )
1
2
B/G
C/D E/S MODE
Q201 0 5 . 3
0.9 RX/TX
A.D.E.F.
5 .76MHz
5 (VDD)
B.C
7.2MHz
Q202 0.7
3.4 0 RX/TX
6 7
Q203 6.7 9.4 6.0 RX/TX
0 5
Q204 6.7 8.7 6.0 RX/TX
Q206
Q205 0.9 2.3 0.2 RX/TX
1 1 1 2
Q207 0.4 0.6 6.5 RX/TX
Q208 0.6 3.6 0 RX/TX
0 0
Q209 0.7 4.7 0 RX/TX
1 6 1 7
Q210 0.7 3.6 0 RX/TX
O (A)
0 (B)
Q21 1 7.1 10.4 6.5 RX/TX
Q21 2 6.5 1 0.4 5.8 RX/TX
Q21 3 2.8 3.8 2. 1 TX
Q214 0 6.6 0.3 TX
Q21 5 0 6.6 0.3 TX
2 3
Q216
0.6 5 . 7 0 TX
Q21 7
5.2 2.0 2.0
Q2 1 8 7.6
1 0.8 6.9 TX
Q219 7.6
1 0.8 7.6 TX
1
2
3
1 .4 2.4
2.6
Q220
8 9
0 0
SEMICONDUCTOR REPLACEMENT
Location No.
ORIGINAL
REPLACEMENT
PART NO. PART NO.
Ql l O, 1 1 2, 1 1 3,
2SC2785E 2SC2785F
1 1 8, 121, 1 22,
208, 2 1 1 , 2 1 2,
2 1 9
G3327850E G3327850F
Ql l l, 1 1 4, 1 1 7
2SA 1 1 75 E 2SA 1 1 75 F
G3 1 1 1 750E G3 1 1 1 750F
Q204, 205
2SC2786L 2SC5 35B
G3327860L G3 305350B
Q2 1 0
2SC2786L 2SC1 6 74C
G33 27860L G33 16 740C
2SK 1 9 3 F
2SK 193K/2SK 193P
SERVICING
3 4 5
A.D.E.F A.D.E.F
5.76MHz
0
90kHz
B.C
B.C
7.2MHz 1 1 2.5kHz
8 9 10
A. D.E.F A.D.E.F
5kHz 5kHz
B.C B.C
1 2.5kHz 1 2.5kHz
1 3 14 1 5
0 (VSS)
5
1 8
0 (C)
(A) CPS Shift register clock input
(B) DI Shift register data terminal
(C) CPL Latch clock terminal
4
5
6 7
0 7.6 3.0 10.0
4
5 6
7
3.4 6.9 3.4 3.4
Model B, C, D, E ONLY
Q214, 2 1 5 , 2 1 8
G3801 930F
G380 1 930K/G3 801 930P
3-9