Sanyo DC-MM5000 (XE) Service Manual page 24

SCHEMATIC DIAGRAM (TUNER)
U2101
ANT GND AGC GND VT +B
1 2 3 4 5 6
R2103
10K
CN201
ANT
TERMINAL
FM
L2100
75ohm
AM
L2101
LOOP
Q2140
KTC3199
0
0
27 R2141
10K
0
R2140
8.5
0
R2454
Q2451
KRA107M 10K
C2457
1;50-P
C2456
0.01
4.2
0 0 3.4
2.0 0.8 0.8
24 23 22 21 20 19
XOUT NC VSSA AOUT AIN PD
IC241 LC72121M
XIN VSSX CE DI CLK DO
1 2 3 4 5 6
2.0
0 0.3 0.1 0.2 4.3
0 0.4 0
R2802
000
This is a basic schematic diagram.
R2204
1M
2.3
0
IF OSC
R2201
XF221 220 Q2201
7 8
KTC3193
R2202
C2170 330
5P
SVC342
D2153
820K
R2148
1SS133
D2456
R2455
220
D2467
1SS133
1.9 0
0 1.9 0 4.7 0
3.2
18 17 16 15 14 13
VDD FMIN AMIN VSSD SD IFIN
FM MONO AM IF_REQ DIST NC
7 8 9 10 11 12
4.8 0 0
0.9 5.2
0.9
11.1 5.6
0.6
0.9
1SS133
D2453
R2460 R2459
10K 10K
FM 98MHZ
VOLTAGE= (UNIT:V)
AM 999KHZ
- 28 -
XF222
9.2
0
1.6
0
2.1
FM IF
OSC BU
L2151
MWANT
4.7
5.1
R2303
1.8K
L2153
C2152
MWOSC
560P
4.9 0
3.0 3.0
4.9
0.6 C2512
27P
0
2.6 0 0 0 3.0
5.0
12 11 10 9 8
XOUT T5 T4 T3 T2
IC251
XIN Vddd Vssd T6 T7
13 14 15 16 17
2.6
0 4.9
0 0 0
C2513 C2515
22P 0.01
C2516 100;16
C2332
0.01
47K
XF233
T2002
R2331
C2306
1;50
XF231
C2322
1000P C2305
0.47;50
6.2 4.0 5.0
2.1 2.1 0
6.6 4.7 5.0 5.1 6.3 0 2.3
1 2 3 4 5 6 7 8 9 10 11 12
AM MIX REG AM IF GND SD ST FM DET VDD MUTE FM/AM MONO
IC231 LA1844ML
AM FM PILOT
AM OSC AFC AM RF AGC DET OUT DET OUT PLL IN MPX IN CLL OUT RCH LCH
24 23 22 21 20 19 18 17 16 15 14 13
6.3 2.1 2.1 0.6 0.5 2.6 2.6 2.1 1.3 1.3 5.3
0.9 0 0.9 0
C2317
4.7;50
C2307 R2308
33K
10;50
C2308 R2309
0.018 27K
C2505
100;16
C2506 C2504
1000P 0.01
2.5 2.5 2.5
0 2.5
0 0 4.9 0 0
0
7 6 5 4 3 2 1
T1 CIN FLOUT Vssa Vdda MPXIN VREF
LC72722
SYNC RDS-IN DO CL DI CE SYR
18 19 20 21 22 23 24
0.2
0.3 0
0 0 4.2 4.9 0.1
0
0.4
D2451
1SS133
R2464
R2461
R2462
R2463
R2519
10K
- 29 -
R2306
2.7K
C2321
1;50
5.0
R2301
0.7
100
R2311
100
C2319
0.022
C2320
0.022
R2712
120K
R2812
120K
(TO AMP)
+5.6V
11
A.GND
10
9 TU_R
TU_L
8
+9.4V
7
1K
6 TU_DO
1K
TU_CE
5
1K
TU_DATA
4
1K
TU_CLK
3
GND
2
RDS
1