2. ALIGNMENT FOR AM/LW TUNING VOLTAGE RANGE
a. Required
Instruments:
DVM
b. Alignment
Procedure
Mode Adjustment
Procedure
(1) Turn on the radio.
(2) Connect the probe of DVM to the test point TP29 and TP4.
(3) Tune the AM frequency to 522 kHz.
AM L5
(4) Adjust L5 to have a reading of 1.2V
±
0.04V.
Mode Adjustment
Procedure
(1) Turn on the radio.
(2) Connect the probe of DVM to the test point TP29 and TP4.
(3) Tune the LW frequency to 153 kHz.
LW L6
(4) Adjust L6 to have a reading of 1.2V
±
0.04V.
c. Instrument
Connection
L6
L5
TP4
TP29
DVM
11
Summary of Contents for WR-2
Page 16: ...TEST POINTS DIAGRAM 16...
Page 17: ...MAIN PCB TOP VIEW 17...
Page 18: ...MAIN PCB BOTTOM VIEW 18...
Page 19: ...CONTROL PCB TOP VIEW 19...
Page 20: ...CONTROL PCB BOTTOM VIEW 20...
Page 21: ...WIRING DIAGRAM 21...
Page 29: ......
Page 30: ...1 IC1 LA1177 2 IC2 TA2099F IC CIRCUIT BLOCK DIAGRAM 30...
Page 31: ...3 IC3 BA09T 4 IC4 TDA7313D 31...
Page 32: ...5 IC5 TDA7266L 6 IC6 TC7S66FU 32...
Page 33: ...7 IC7 NJM4580D 8 IC8 PT2308 33...
Page 34: ...9 IC200 H7805AM 10 IC201 XC62AP4002 34...
Page 35: ...11 IC202 TC9324F 35...
Page 36: ...12 IC203 BU1924F 13 IC204 XC61CN2002MR 36...
Page 37: ...14 IC205 XC61CN3502MR 37...
Page 43: ...MAIN SCHEMATIC DIAGRAM 43...
Page 44: ...CONTROL SCHEMATIC DIAGRAM 44...
