- 14 -
1
2
E
5V
TU-R
AGND
TU-L
TU-DO
TU-CE
TU_DA
TU_CK
ST
12V
T002 94V-0
E
E
1AD4B10D1852A
E
E
13
12
10
1
24
20
LC72722N
1
2
J2412
J2207
J2014
J2413
J2215
IC241
X2451
C2457
J2017
C2452
J2016
J2021
D2452
J2012
L2451
J2209
J2210
J2211
J2419
J2214
J2009
J2204
J2422
J2205
J2408
J2404
J2401
J2202
J2405
J2403
J2423
J2428
J2201
C2305
C2321
IC231
XF231
R2302
R2309
C2302
J2003
XF222
C2303
XF233
Q2201
L2101
J2001
J2415
XF221
L2151
C2102
J2402
LC72121
0VADJ
LA1844
J2002
J2417
J2213
J2425
J2421
J2407
J2411
J2400
J2418
R2114
C2317
C2311
C2307
J2000
J2424
J2004
J2203
J2406
CN203
J2416
J2019
J2018
R2202
D2151
C2465
C2451
C2301
J2208
J2212
J2020
J2427
J2005
J2410
CN241
J2206
D2301
J2022
J2007
J2216
J2200
C2328
R2311
R2301
L2503
C2523
C2327
U2101
J2414
Q2140
R2140
Q2310
R2101
J2409
D2466
J2008
CN201
J2013
D2467
J2011
L2502
Q2801
Q2701
C2323
IC251
C2705
X2501
J2117
J2114
J2116
J2118
C2805
J2015
C2516
C2503
C2505
L2501
J2217
J2225
J2104
R2454
R2465
C2464
C2463
IC241
C2453
C2454
C2455
C2456
R2453
R2452
C2461
C2462
R2455
C2322
R2458
C2333
C2314
R2303
C2320
C2330
C2304
C2318
R2305
C2312
C2315
R2308
C2308
C2310
R2306
R2307
C2309
R2304
R2201
C2201
C2203
R2203
R2204
R2205
C2131
C2117
C2151
R2153
C2130
C2152
R2151
Q2451
C2319
C2316
C2113
C2306
C2313
R2459
R2466
R2461
C2524
R2463
R2462
R2464
R2467
C2101
R2120
C2140
R2141
R2331
C2332
R2312
C2324
R2801
R2701
C2502
R2504
C2512
C2513
C2515
R2712
C2703
R2705
R2310
C2522
R2812
R2704
C2702
R2804
C2802
R2702
R2802
C2504
C2506
C2521
R2503
R2519
R2805
R2803
R2703
IC252
Q2502
C2803
XF233
XF231
TP24
TP25
TP12
TP1
1
L2151-a
AM IN.
FM IN.
TP15
TP14
TP13
TP26
DC cut
+
-
TUNER ADJUSTMENT
1.FM
Standerd condition
ANTENA : 75
Ω
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
Connection
SG
Set
Adjustment
Remark
Circuit
Input
Output
Frequency
Position
1
IF Alignment
FM ANT.
SG=66dBµV
IC231 3,22pin
TP24, TP25
98.0MHz
---
XF233
0.0 ± 0.05V
2
Cover
---
Connect Digital DC voltmeter
87.5MHz
Low
------
Confirm voltage more
than 0.8V. (X=2.0V)
voltage
---
to TP11(H), TP12(E).
108.0MHz
High
Confirm voltage less than
9.0V. (X=7.5V)
3
Tracking
Connect FM SG to FM Antenna
Connect to VTVM
90.0MHz
Low
------
Max.
(SG= about 8dBµV)
TP13(L) or TP14(R), TP15(E)
106.0MHz
High
4
AUTO STOP
98.0 MHz
------
Comfirm
2.AM
Standerd condition
ANTENA : IRE LOOP(SG) <--(60cm)--> set
Moduration : 1kHz , 30%
OUTPUT LEVEL : About 100mV (TP13 , TP14 , TP15)
Step
Adjusting
Connection
SG
Set
Adjustment
Remark
Circuit
Input
Output
Frequency
Position
1
IF Alignment
Loop Ant.
IC231 19pin(DCCUT)
TP26(GND)
522kHz
XF231
Max.
2
Cover
---
Connect Digital DC voltmeter
522kHz
Low
---
Confirm voltage more
than 0.8V
voltage
---
toTP11(H), TP12(E).
1611 kHz
High
---
Confirm voltage less than
9.0V
3
Tracking
Connect AM SG to
Connect to VTVM
603kHz
Low
L2151-a
Max.
Test loop Ant.
(SG= About 80dBµV)
TP13(L) or TP14(R), TP15(E).
1404kHz
High
