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TUNER ADJUSTMENT
1
1
12V
5V
R2464
J2200
TU-R
AGND
TU-L
R2310
TU-DO
C2323
TU-CE
L2503
TU_DA
R2812
TU_CK
R2462
C2705
ST
R2703
R2463
R2712
R2803
R2519
J2011
IC252
13
20
24
C2703
R2702
C2702
LC72722N
C2513
R2704
C2512
R2504
C2506
R2503
Q2502
12
2
2
T002 94V-0
10
1
IC251
C2504
J2114
J2116
1AD4B10D1852A
X2501
1.FM
Standerd condition
ANTENA : 75Ω Unbalanced direct
Mod. Freq. : 1kHz
Deviation : MONO ± 22.5kHz / STEREO ± 22.5kHz(MAIN) , ±6.75kHz(PILOT)
RF LEVEL : dbµV EMF Open
OUTPUT LEVEL : About 100mV (TP13 , TP14 , TP15)
Step
Adjusting
Circuit
Input
1
IF Alignment
FM ANT.
SG=66dBµV
2
Cover
voltage
3
Tracking
Connect FM SG to FM Antenna
(SG= about 8dBµV)
4
AUTO STOP
2.AM
Standerd condition
ANTENA : IRE LOOP(SG) <--(60cm)--> set
Moduration : 1kHz , 30%
OUTPUT LEVEL : About 100mV (TP13 , TP14 , TP15)
Step
Adjusting
Circuit
Input
IF Alignment
Loop Ant.
1
2
Cover
voltage
3
Tracking
Connect AM SG to
Test loop Ant.
(SG= About 80dBµV)
All manuals and user guides at all-guides.com
R2311
J2002
R2301
D2466
D2301
J2008
R2801
C2328
C2457
R2454
J2206
J2409
L2451
J2412
R2701
C2456
J2417
R2455
J2016
C2452
J2209
IC241
J2210
J2211
C2453
R2459
LC72121
IC241
J2020
C2464
J2427
Connection
Output
IC231 3,22pin
TP24, TP25
---
Connect Digital DC voltmeter
to TP11(H), TP12(E).
---
Connect to VTVM
TP13(L) or TP14(R), TP15(E)
Connection
Output
IC231 19pin(DCCUT)
TP26(GND)
---
Connect Digital DC voltmeter
toTP11(H), TP12(E).
---
Connect to VTVM
TP13(L) or TP14(R), TP15(E).
J2000
J2201
C2306
XF222
C2333
C2332
R2331
C2330
C2113
R2304
J2203
R2305
XF231
C2302
C2319
LA1844
C2313
IC231
R2303
R2309
J2018
R2307
C2309
C2310
J2019
J2421
C2308
C2318
Q2201
R2312
C2203
E
R2458
XF221
C2307
R2203
J2213
J2424
C2317
R2204
J2214
J2425
C2322
C2314
SG
Set
Frequency
Position
---
98.0MHz
Low
87.5MHz
High
108.0MHz
Low
90.0MHz
High
106.0MHz
98.0 MHz
SG
Set
Frequency
Position
522kHz
Low
522kHz
High
1611 kHz
Low
603kHz
High
1404kHz
- 14 -
J2001
CN203
L2151
R2141
C2140
Q2140
D2151
J2004
L2101
J2406
U2101
R2140
C2101
J2418
C2130
C2117
Adjustment
Remark
XF233
0.0 ± 0.05V
Confirm voltage more
than 0.8V. (X=2.0V)
------
Confirm voltage less than
9.0V. (X=7.5V)
------
Max.
Comfirm
------
Adjustment
Remark
XF231
Max.
Confirm voltage more
---
than 0.8V
Confirm voltage less than
---
9.0V
L2151-a
Max.
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