- 8 -
TUNER ADJUSTMENT
Antenna
: 75
Ω
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 - 1611 kHz
1AD4B10D2011A
24
20
13
12
10
1
24
20
13
12
10
1
NC(GND)
DI
DO
TU.GND
5.6V
HP_SW
HP-R
HP-L
CLK
CE
TU-L
TU-R
+12V
HP_MUT
HP.GND
LC72121M
LA1844
TA8176S
SH201
94V-0 F01
TP11(H)
TP12(E)
0V ADJ
R2303
CN291
X2451
D2301
L2503
R2101
L2103
C2301
C2122
XF231
CN203
CN201
CN241
IC211
XF233
B2101
D2102
D2101
XF222
XF221
L2101
L2102
C2311
C2317
R2113
C2465
C2327
L2903
C2307
C2303
R2311
C2328
R2301
R2455
D2452
C2991
L2451
C2451
L2151
JW201
XF211
L2901
L2902
CAN
Q2902
C2121
R2111
IC241
IC231
C2123
C2101
R2106
C2103
C2102
C2104
C2126
R2104 C2105
R2102
R2103
C2112
C2109
C2108
C2106
R2112
C2107
C2111
C2151
C2152
R2151
Q2901
C2131
C2130
R2303
C2312
C2310
R2309
R2308
C2320
C2319
C2309
C2316
R2307
R2302
C2304
C2302
C2321
C2306
R2306
C2322
C2452
C2330
C2453
C2454
C2462
C2464
C2463
C2461
C2117 R2114
C2455
R2452
C2457
R2453
R2304
R2305
D2451
Q2451
R2465
R2454
R2459
R2458
R2712
R2711
R2811
R2812
SG293
SG292
SG291
R2902
R2901
C2902
C2901
C2903
R2463
R2464
R2462
R2461
C2992
C2314
C2308
C2315
R2153
C2113
C2305
C2456
CAN
C2318
C2904
D2104
D2151
12
1
0V ADJ
RDS
IO0
AM DET
FM DET
GND
GND
DO
DI
TU-L
TU-R
HP-MUT
HP-SW1
HP-SW2
HP.GND2
HP-R2
HP-R1
HP-L1
HP-L2
HP.GND1
+12V
CE
CLK
5.6V
0V-TP1
0V-TP2
TP11(H)
TP12(E)
AM-ANT
AM.GND
FM-ANT
FM.GND
L2151-a
TP11
TP12
L2102
L2101
TP25
XF231
XF233
TP24
TP24
TP26
TP15
TP13
TP14
TP25
TP11
TP12
IC231
Input
Output
IC231 3-22Pin
TP24,25
TP11 (H)
TP12 (E)
Confirm voltage of 108.0MHz is
about 7.5V.
90.0MHz
106.0MHz
4
Auto Stop
FM Ant
---
98.0MHz
L2101
Confirm Auto Stop SENS.
If SENS is bad,align L2101
Input
Output
1
IF
Adjustment
Loop Ant
IC231 19Pin_DCCUT
(TP26)-GND
522kHz
XF231
Maximum
603kHz
1404kHz
---
SG
Frequency
98.0MHz
XF233
Adjustment
0.0±0.05V
L2102
1.1±0.1V
FM Ant
87.5MHz
Remark
SG
Frequency
2
Cover
Voltage
---
TP11 (H)
IF
Adjustment
1
Adjustment
---
1. FM
Step Adjusting
Circuit
Connection
---
108.0MHz
Tracking
3
2
Cover
2. AM
Step Adjusting
Circuit
Connection
3
Tracking
522kHz
---
TP13 (L)
TP14 (R)
TP15 (E)
Loop Ant
L2151-a
TP12 (E)
1611kHz
Maximum
TP13 (L)
TP14 (R)
TP15 (E)
FM Ant
L2101
Maximum
Confirm voltage is > 0.8V.
Confirm voltage is > 9.0V.
Remark
