HA-W500RF (EG)/(EK)
8 (No.70270)
7.Block Diagram
8.Electric Parts List
A
Item No.
Parts No.
Parts Name
Description
J22121-001
Transmitter Unit
A
Item No.
Parts No.
Parts Name
Description
A
J22133-001
Main P.C.B Ass'y
Adjusted
J22134-001
Charge P.C.B Ass'y
D2
J47138-001
LED
Power and charge Indicator
VR1
J47139-001
Variable Resistor
Volume control, 100 k X 2
VR2
J47140-001
Variable Resistor
Tuning control, 100 k X 1
A
SW1
J47145-001
Power
Switch
Slide
A
JK1
J47141-001
Charge
Jack
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.
Parts marked (
A
) are safety parts. When replacing, be sure to use the specified one.
Receiver (Headphones)
Transmitter
Receiver (Headphones)
ANT
FILTER
UHF
MODULE
ANT
IF
VB
VT
18
FM STEREO RADIO
IC2:CXA1538M
RF IN
OSC
RF
Rch
AF OUT
Lch
AF OUT
DISCRI
FE OUT
IF IN
Vcc
26
16
13
HEADPHONE
AMP
IC3:LM4809
1
7
Rch OUT
Lch OUT
4
22
20
TUNING
VR2
8
2
6
POWER INDICATOR
LED RED
Ni-Cd Battery
(1.2V) x 2
POWER
SW1
CHARGE INDICATOR
LED GREEN
COMPARATOR
IC4:LM393
NJM2903
CHARGE INPUT
ON
OFF
ON
OFF
-
5
6
7
A
VOLUME
VR1
