Service manual

HT-DP2500W
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IC1 RH-iX0001SJZZ: System Microcomputer (IX0001SJ) (1/2)
1 P00/TXD/SBO0 TUN_DI Output Data output terminal to the tuner PLL IC
2 P01/RXD/SBI0 TUN_DO Input Data input terminal from the tuner PLL IC
3 P02/STB0 TUNE_CK Output Clock output synchronized with the tuner PLL IC
4 P03/SBO1 TUN_CE Output Enable output for the tuner PLL IC "L" = OFF, "H" = ON
5 P04/SBI1 TUN_MUTE Output Tuner mute output terminal
6 P05/SBT1 TUN_SD Input Terminal for detecting the tuner broadcast reception mode
"L" = During broadcast reception
7 P06/DK/ TUN_ST Input Input for detecting whether or not the tuner is receiving stereo radio signals
BUZZER "H" = MONO, "L" = STEREO
8 VDD VDD — Microcomputer power supply +5V
9 OSC2 OSC2 Output External oscillator terminel for the main clock f = 8.00 MHz
10 OSC1 OSC1 Input External oscillator terminel for the main clock f = 8.00 MHz
11 VSS VSS — Microcomputer power supply GND
12 XI XI Input External oscillator terminel for the sub clock f = 32.768 kHz
13 XO XO Output External oscillator terminel for the sub clock f = 32.768 kHz
14 MMOD MMOD Input Memory mode select terminal
15 VREF- VREF- — A/D convertor power supply GND
16-18 PA0/AN0-PA2/AN2 KEY1-KEY3 Input Operation key input MAX-10 key
19 PA3/AN3 AREA Input Destination detection input. Operates as an A/D input port
Detects the destination setting on the DC voltage when resetting.
20 PA4/AN4 SP_LEVEL Input Main speaker output level detection, input
21 PA5/AN5 MODEL Input Model detection input. Detects the model on DC voltage when resetting.
22 PA6/AN6 POSISTOR Input Input for detecting an increase in the power amplifier temperature
23* PA7/AN7 N.C — Not used
24 VREF+ VREF+ — A/D convertor power supply +5V
25 P07 ALC Input Power output ALC function ON/OFF control terminal
26 P27/RST RESET Input System reset, input
27* P10/TM0IO FS_STB Output Function select IC strobe signal
28* P11/TM1IO FS_DATA Output Function select IC control signal, output
29* P12/TM2IO FS_CK Output Synchronous clock output to the function select IC
30 P13/TM3IO V_LATCH Output Latched data output to the electronic volume IC
Model 2000: Electronic volume IC enable, output
31 P14/TM4IO V_CK Output Synchronous clock for the electronic volume IC
32 P15 V_DATA Output Data output to the electronic volume IC
33 P20/IRQ0 POWER Input Main case primary power switch, input "H" = ON, "L" = OFF
34 P21/SEN/IRQ1 SYS_STOP Input Power failure detection, input. Changes to the STOP mode when "L".
35* P22/IRQ2 AC3_SO Input ZR38600 serial data, input
36 P23/IRQ3 REMOCON Input Remote control signal, input
37 P24/IRQ4 JOG_UP Input Jog dial UP pulse, input
38 P25 JOG_DOWN Input Jog dial DOWN pulse, input
39 P30/SBO2 F_MUTE Output Front amplifier input, Mute output "H" = MUTE OFF, "L" = MUTE ON
40 P31/SBI2 R_MUTE Output Rear amplifier input, Mute output "H" = MUTE OFF, "L" = MUTE ON
41 P32/SBT2 C_MUTE Output Center amplifier input, Mute output "H" = MUTE OFF, "L" = MUTE ON
42 P50 SW_MUTE Output Woofer amplifier input, Mute output "H" = MUTE OFF, "L" = MUTE ON
43* P51 FA_RLAY Output Front 'A' speakers' protective relay control, output
"H" = RLAY CLOSE, "L" = RLAY OPEN
44 P52 POW_SW Output Primary-side AC power ON/OFF relay control, output "H" = ON, "L" = OFF
45* P53 N.C — Not used
46* P54 R_RLAY Output Rear speaker protective relay control, output
"H" = RLAY CLOSE, "L" = RLAY OPEN
47* P67/DGT17 C_RLAY Output Center speaker protective relay control, output
"H" = RLAY CLOSE, "L" = RLAY OPEN
Pin No. Port Name
Function
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
FUNCTION TABLE OF IC
Terminal
Name
Input/
Output