Service manual

XL-520W/CP-520
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IC701 RH-iX0189AWZZ:System Microcomputer(iX0189AW) (1/2)
1-4 COM3-COM0 Output LCD COMMON output terminal
5-7 VLC3-VLC1 — LCD power terminal
8 VDD — Microcomputer power supply +5V.
9 OSC2 Output Main clock oscillator connection terminal f=8MHz
10 OSC1 Input Main clock oscillator connection terminal f=8MHz
11 VSS — Microcomputer power supply GND
12 XI Input Sub-clock oscillator connection terminal f=32.768kHz
13 XO Output Sub-clock oscillator connection terminal f=32.768kHz
14 MMOD Input Memory mode selection terminal
15 VREF- — Power supply for AD converter GND
16 AREA Input Destination detection input this terminal serves as an A/D input port.
When resetting is performed, the destination setting is detected based on the DC voltage.
17 KEY1 AN0/PA1 Input Operation key input, max. 8 keys
18 KEY2 AN0/PA2 Input Operation key input, max. 8 keys
19 POWER Input POWER key input detection
20* VSM Input Tuner signal meter (S meter) voltage input terminal
IX0189AW: Unused terminal (regular input port)
21 F.P Input Cassette tape erroneous erasing preventing lug detection input
H: Record inhibited L: Record enable
22 RUN PLS Input Tape run/END detection input If pulse input is detected, it is judged that the tape is running.
23 CAM SW Input Cassette mechanism operation status detection input
H: Mechanism stop L: Mechanism in operation
24 VREF+ — A/D converter power supply +5V
25 DI Output Terminal to output data to TUNER PLL IC
26 DO Input Data input from TUNER PLL IC
27 CL Output TUNER PLL IC sync clock output
28 VDI Output Terminal to output data to VOL IC
29 VCE Output VOL IC chip enable output "L"=OFF "H"=ON
30 VCL Output VOL IC sync clock output
31 CE Output TUNER PLL IC enable output "L"=OFF "H"=ON
32 RESET Input RESET signal input
33* — — No Connect
34 P-MUTE Output Power mute output "H"=MUTE OFF "L"=MUTE ON
35 P-CONT Output Power amplifier operation control output
H: Amplifier operation ON L: Amplifier operation OFF
36 CD+B Output CD servo power circuit control output H: CD power ON L: CD power OFF
37 FUNC Input Function setting input Reset mode: H: 4-step selection L: 3-step selection
38 SYS STOP Input Power failure detection input L: Change to HALT mode
39 REMOCON Input Remote controller signal input
40* CLE Input RDS IC sync clock input
41 STEREO Input Radio stereo broadcast reception detection input L: Stereo broadcast reception
42 SD Input Broadcast reception status detection input L: Broadcast wave reception
43* ID Input RDS signal reception status detection H: RDS not received L: RDS received
44* DATA Input Data input from RDS IC
45 CD RES Output LC78623E RESET signal output
46 CEE Output TC9284F chip enable terminal L: BUS terminal active
47 BUCK Output TC9284F data sync clock output
48 R-MUTE Output TUNER mute output "H"=MUTE ON "L"=MUTE OFF
49 LED2 Output IND LED control output (when SRS2 is on) H: LED goes out L: LED lights
50 LED3 Output IND LED control output (when SRS1 is on) H: LED goes out L: LED lights
51 SOL Output Cassette mechanism solenoid drive control output
52 MOT Output Cassette mechanism motor drive control output
FUNCTION TABLE OF IC
Pin No.
FunctionTerminal Name
Input/Output
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.