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Tuner Adjustments - Sanyo DC-DA2000 Service Manual

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TUNER ADJUSTMENTS

• Use a plastic screw driver for adjustments.
• MODE : TUNER
• Speaker impedance : 4 ohm
J4119
C4560
J4617
J4618
R4400
J4619
R4401
J4620
J4621
J4425
J4426
J4622
J4428
J4623
J4624
CN400
IC446
E
C4993
C4994
J4625
D4993
+5.6V
1. FM
Adjusting
Step
Circuit
Input
IF(0V)
1
FM Antenna SG=66dBuV/EMF
Adjustment
Cover
2
Voltage
2. AM
Adjusting
Step
Circuit
Input
IF
1
Loop Ant
Adjustment
Cover
2
Voltage
3
Tracking
Loop Ant
• TUNING
FM : 87.5 - 108MHz
AM : 522 - 1710kHz(9KHz step)
TP14
TP13
TP15
J4412
J4423
J4424
L_CH
GND
R_CH
C2301
XF233
+9.0V
J2600
C2321
C2306
R2712
R2812
C2305
12
J4427
C2327
13
J4122
J2601
C2319
C2319
C2319
R2701
C2901
R2801
C2328
J2603
J2604
J2122
J2605
J2606
C2457
J2509
R2452
C2452
J2510
C2456
C2456
C2456
C2454
24
13
1
IC241
D2452
12
J2125
J2126
C2453
C2461
C2464
J2127
J2511
D2451
IC231
TP25
Antenna
Dev.
RF Level
Connection
Alignment voltage IC231
3-22pin(TP24,25) is 0.0±0.05V
Connect Digital DC voltmeter to
---
TP11(H), TP12(E).
Anntena
RF Level
Connection
Connect to VTVM
point TP13(L) or TP14(R) and TP15(E).
---
Connect Digital DC voltmeter to
---
TP11(H )and TP12(E).
Connect to VTVM
point TP13(L) or TP14(R) and TP15(E).
520 - 1710kHz(10KHz step)
XF233
T2002
XF221
R2204
R2205
J2500
R2109
Q2201
J2501
C2203
J2105
R2203
R2202
J2106
T2002
R2304
J2503
C2302
XF222
1
C2303
IC231
VT
24
J2117
J2119
C2116
C2312
C2323
C2323
C2323
C2313
C2307 C2317
J2506
R2302
R2302
R2302
C2311
R2309
R2309
R2309
J2602
J2507
J2508
C2314
R2303
R2454
L2451
J2123
R2458
R2459
R2455
R2460
C2451
J2124
E
TP24
TP12
: 75Ω unbalanced, Modulation : 1 KHz
: ±22.5kHz(MONO),±22.5kHz(MAIN),±6.75kHz(PILOT)
: dBuV EMF, Output Level : about 30mV at TP13, TP14, TP15
SG
Frequency
Output
98MHz
87.5MHz
108.0MHz
: IRE Loop(SG), Moduration : 1kHz, 30%
: dBuV EMF, Output Level : about 30mV at TP13, TP14, TP15
SG
Frequency
Output
450KHz
at 999kHz
522kHz
1710kHz
603kHz
1404kHz
- 2 -
L2103
L2153
CN201
L2104
C2101
C2112
C2113
IC211
1
R2105
C2110
C2110
C2110
R2107
R2108
R2102
C2107
C2105
C2105
C2105
D2102
D2101
C2111
R2103
D2103
C2104
L2103
R2106
R2106
R2106
R2101
J2108
C2103
L2102
J2110
J2113
L2153
R2131
C2154
D2151
D2153
R2149
L2151
C2141
C2141
C2141
S2001
CT252
VT
TP11
CT252
Adjustment
Alignment voltage IC231
XF233
3-22pin is 0.0±0.05V
L2103
---
5.30±0.50V Check Only
Adjustment
T2002
L2153
7.50±0.50V Check Only
---
L2151
CT252
J2100
CN202
C2600
C2600
C2600
L2151
Remark
1.00±0.05V
Remark
Maximum
1.00±0.05V
Maximum

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