Sanyo DC-PT70 - Tuner Adjustment Procedures (FM;AM); FM Tuner Adjustment; AM Tuner Adjustment

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Input Output
IC231 3-22Pin
TP24,25
TP11 (H)
TP12 (E)
90.0MHz
106.0MHz
Input
Output
1
IF
Adjustment
Loop Ant
IC231 19Pin_DCCUT
(TP26)-GND
522kHz T2002 Max.
'
---
603kHz L2151 Max.
1404kHz CT252 Max.
0.0±0.05V
About 1.1V
FM Ant
SG=66dBµV
87.5MHz
98.0MHz XF233
L2103
Remark
SG
Frequency
2
Cover
Voltage
---
TP11 (H)
IF
Adjustment
1
Adjustment
---
1. FM
Step
Adjusting
Circuit
Connection
108.0MHz
Tracking3
2 Cover
Remark
2. AM
Step
Adjusting
Circuit
Connection
SG
Frequency
Adjustment
3 Tracking
522kHz
TP13 (L)
TP14 (R)
TP15 (E)
TP12 (E) 1710kHz
---
L2153
Confirm voltage is < 8.0V
Loop Ant
SG=80dBµV/m
TP13 (L)
TP14 (R)
TP15 (E)
FM Ant
SG=8dBµV
L2102 Max.
1.0±0.1V
Confirm voltage is < 8.5 V.
TUNER ADJUSTMENT
Antenna : 75Ω unbalanced direct, Modulation : 1 kHz
Dev. : ±22.5kHz(MONO), ±22.5kHz(STEREO),±6.75kHz(PILOT)
RF Level : dBuV EMF
Output Level : about 100mV at TP13, TP14, TP15
Anntena : IRE Loop(SG), Moduration : 1kHz 30%
RF Level : dBuV EMF
Output Level : about 100mV at TP13, TP14, TP15
• Use a plastic screw driver for adjustments. • MODE : ST (Stereo)
• Speaker impedance : 8 ohms • TUNING FM : 87.5 - 108MHz
AM : 522 - 1710 kHz
ABCD
E
ABCD
E
VGND
DVD/TV-L
AGND
DVD/TV-R
FR_GND
DGND DGND
D9V
LID_SW
D-MUTE
D5.6V
DVD_PCON
DIP
D
E
1
12
13
24
13
24
12
1
1
E
E
CN445
J
4
TU DI
TU_DOUT
GND
J4408
J4416
J4016
J4013
J4018
J4015
J4019
J4
4
J44
0
CN400
J44
0
J4413
J4412
J4411
2
5
1
R4602
0
0
J
4423
J
4422
J
4421
J
4420
J4418
J4012
J4
2
J4400
J4414
CN420
D2453
X2451
C2457
L2151
L2153
L2451
C2451
XF233
D2103
J2210
D2153
Q2451
J2201
XF221
XF222
C2321
C2305
C2328
C2327
C2307 C2317
T2002
J2218
C2303
J2108
J2204
J2101
J2103
J2104
J2022
J2105
J2031
C2116
R_CH L_CH
+9.0V
GND
J2016
J2017
J2019
J2216
IC231
IC241
J2211
J2033
J2015
J2025
R2109
TP11(H)
J2213
CN201
S2001
IC211
J2009
J2011
J2012
C2306
J2024
L2104
D2102
L2103
C2311
C2313
J2030
J2214
J2212
J2026
J2002
J2045 J2044 J2043
J2028
J2032
J2034
J2035
J2205
CT252
J2001
J2209
D2101
J2207
Q2201
J2046
J2036
C2901
J2005
CN202
J2203
J2014
J2208
J2106
J2107
J2013
J2206
J2006
XF211
J2029
J2042
J2219
J2038
J2020
J2007
R2148
C2151
LC72121M
LA1844ML
J2102
J
J2018
J2023
L2102
R2101
R2202
R2203
R2301
J2047
C2301
R2311
J2037
J2027
J2008
J2041
D2104
C2458
J2021
Q2450
D2450
J2202
J2004
J2215
J2039
J2010
J2040
TP12(E)
0V-ADJ
LA1186N
J2048
J2217
R2140
C2140
L2101
L2100
CN203
XF231
R4123
R
4129
R
4127
R4121
R
4131
1
26
CAN
R2303
IC241
IC231
C2461
C2456
R2453 R2452
C2455
C2154
R2131
R2149
R2151
C2453
C2454
C2304
R2304
R2305
R2306
C2320
C2319
C2309
C2316
R2307
R2309
R2308
C2308
C2310
C2312
R2302
C2902
R2801
R2701
R2100
R2712
R2812
C2314
C2302
C2462
C2600
C2322
C2463
C2464
C2318
R2106
C2323
C2101
C2105
C2103
C2107
R2102
R2107
C2110
C2111
R2108
C2112
R2103
C2114
C2113
R2110
R2201
R2204
C2452
R2111
C2104
C2102
C2106
C2141
C2152
C2115
R2120
C2203
R2105
C2109
C2330
R2358
R2454
R2455
R2464 R2462 R2461 R2463
R2450
R2460
R2459
R2451
C2315
R2456
C2998
SG201
SG202
L2153
CT252
L2151
TP25
TP24
L2102
L2103
TP11
TP12
T2002
XF233
TP13
TP15
TP14
FM ANT.(H)
FM ANT.(E)
TP26