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CIRCUIT DESCRIPTION
Receiver Microprocessor: CXP50112-544Q (X14-: IC1)
1. Description of functions
(1) Features
* 5 audio inputs
CD, PHONO, TUNER, TAPE, AUX
* 30-station frequency preset memory
* One programmable timer
(2) Object of regulation
* FL display tube: 9-BT-129GK
* Deck regulation microprocessor: »PD75112GF-E40
* PLL (with IF count): LC7218
2. Conditions according to destination/model
(1) Frequency
SETTING SW (Port No. of IC1)
CH. SPACE (38) | AM MODE (37) | LW MODE (36)
Reception frequency
range
87.5
~ 108.0 MHz
530
~ 1610 KHz
87.5 ~ 108.0 MHz
530 ~ 1700 KHz
87.5 ~ 108.0 MHz
531 ~ 1602 KHz
87.5~ 108.0 MHz
531 ~ 1602 KHz
153 ~279 KHz
Destination
Band
F
A
FE
A
1
M
F
A
F
M
M
M
M
M
M
M
bese
|
Sake
eee!
Lo
ee
Poe
|
a
po
fe
0: Low
1: High
*: Don't care
3. Initial conditions
POWER
OFF
TUNER
Mute
OFF
BAND
FM
Frequency
AUTO/MONO
PRESET CH frequency
FM lower limit
AUTO
See next section
Program execution mode
OFF
RX-28
Reference
frequency
25 KHz
10 KHz
2 KHz
10 KHz
2 KHz
9 KHz
0 KHz
9 KHz
9 KHz
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