HA-W500RF (EG)/(EK)
7.Block Diagram
Receiver (Headphones)
ANT
-
TUNING
VR22220
OSCRF
21
VTRch5HEADPHONERch OUT
AF OUTAMP
UHF18
ANTIFRF INFM STEREO RADIO
MODULEFILTERIC2:CXA1538M67
IC3:LM4809
VBLch6Lch OUT
AF OUT
84
VccIF IN FE OUTDISCRIVOLUME
713 1626VR1
ON
Ni-Cd BatteryOFF
POWER INDICATOR
(1.2V) x 2 LED RED
POWER
SW1
ONCHARGE INDICATOR
COMPARATOR
LED GREEN
OFFIC4:LM393CHARGE INPUT
NJM2903
8.Electric Parts List
Transmitter
AItem No.Parts No. Parts NameDescription
AJ22121-001 Transmitter Unit
In case of some problem arise in this transmitter unit, have to change the transmitter unit
itself, due to avoid the law of radio regulation.
Parts marked (A ) ave safety parts. When replacing, be sure to use the specified one.
Receiver (Headphones)
AItem No.Parts No.Parts NameDescription
A J22133-001Main P.C.B Ass'yAdjusted
J22134-001Charge P.C.B Ass'y
D2 J47138-001LEDPower and charge Indicator
VR1 J47139-001Variable ResistorVolume control, 100 k X 2
VR2J47140-001Variable ResistorTuning control, 100 k X 1
A SW1J47145-001Power SwitchSlide
A JK1J47141-001Charge Jack
Parts marked (A ) are safety parts. When replacing, be sure to use the specified one.
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