Yamaha RX-V550 Service Manual page 49

IC502: M30622MWP-152FP (FUNCTION P.C.B.)
16bit µ-COM (Main CPU)
Function
Pin Pin Function Function Detail of Function
name
66 P26/A6 P26 TMT TUNER MUTE
67 P25/A5 P25 TUNED TUNED
68 P24/A4 P24 /ST TUNER /ST
69 P23/A3 P23 PRY Power relay output
70 P22/A2 N.C.
71 P21/A1 P21 ERY Surround SP relay output
72 P20/A0 P20 MBRY Front B SP relay output
73 P17/D15/INT5 INT5 PDET Power Down DETECT INT
74 P16/D14/INT4 INT4 PSW Standby SW INPUT
75 P15/D13/INT3 INT3 REM Remote controller input
76 P14/D12 P14 MARY Front A SP relay output
77 P13/D11 N.C.
78 P12/D10 P12 /4ohm IMPEDANCE control
79 P11/D9 P11 8/4DET IMPEDANCE select SW detection
80 P10/D8 P10 PRI Protection excess current detection
81 P07/D7 P07 PSV PowerSave
82 P06/D6 N.C.
83 P05/D5 P05 /BLK FL Driver OFF
84 P04/D4 P04 ISA INPUT SEL. Rotary A
85 P03/D3 P03 ISB INPUT SEL. Rotary B
86 P02/D2 P02 TONEA Tone Con. Rotary A
87 P01/D1 P01 TONEB Tone Con. Rotary B
88 P00/D0 P00 VRA Volume Rotary A
89 P107/AN7 P107 VRB Volume Rotary B
90 P106/AN6 AN6 PRV Protection power supply voltage detection MAIN 1/MAIN 2
91 P105/AN5 AN5 PRD Protection DC detection
92 P104/AN4 AN4 PLDET POWER LIMITTER DETECT
93 P103/AN3 AN3 THM Temperature detection
94 P102/AN2 AN2 ADKEY0 Key AD input 0
95 P101/AN1 AN1 ADKEY1 Key AD input 1
96 Avss Avss Avss AD ground
97 P100/AN0 AN0 MODEL Model check
98 Vref Vref Vref AD reference
99 Avcc Avcc Avcc AD power supply
100 P97/Adtrg/Sin4 P97 CEFD FL Driver CE
RX-V550
Key Input(A-D) Pull-Up Resistance 10 k-Ohms
Ohm + 0.0 k + 1.0 k + 1.0 k + 1.5 k
V ∼ 0.3 ∼ 0.7 ∼ 1.0 ∼ 1.5
ADKEY 0 TUNING INPUT PRESET/TUNING PRESET/TUNING
ー
94Pin P102/AN2 MODE MODE >
ADKEY 1 MULTI-CH PTYSEEK PTYSEEK
MEMORY FM/AM PRESET/TUNING
93Pin P101/AN1 INPUT
HTR5750, RX-V450, HTR-5740, DSP-AX450
Key Input(A-D) Pull-Up Resistance 10 k-Ohms
Ohm + 0.0 k + 1.0 k + 1.0 k + 1.5 k + 2.2 k
V ∼ 0.3 ∼ 0.7 ∼ 1.0 ∼ 1.5 ∼ 2.0
ADKEY 0 TUNING INPUT BASS/TREBLE BASS/TREBLE
CONTROL
94Pin P102/AN2 MODE MODE + -
ADKEY 1 MULTI-CH PRESET/TUNING PRESET/TUNING
MEMORY FM/AM
93Pin P101/AN1 INPUT > <
Classified I/O Comment
TUNER O (Internally pulled up when
microprocessor is used)
TUNER I(IPU) External pull-up not required because of
being pulled up within microprocessor
TUNER I(IPU) External pull-up not required because of
being pulled up within microprocessor
Main_2 O
Main_2 O
Main_2 O
Main_2 INT
OPE INT
OPE INT
Main_2 O
Main_2 O
Main_2 I
Main_1 I
Internal O
OPE O
OPE I
OPE I
OPE I (RX-V550 only)
OPE I (RX-V550 only)
OPE I
OPE I
AD
(internal)
Main_1 AD
Main_1 AD
Main_1 AD
OPE AD
OPE AD
Vss
Internal AD
(+5v)
Vcc(BU)
OPE O
+ 2.2 k + 3.3 k + 4.7 k + 6.8 k + 10.0 k + 22.0 k
∼ 2.0 ∼ 2.6 ∼ 3.1 ∼ 3.6 ∼ 4.0 ∼ 4.4
TONE SPEAKER SPEAKER
A/B/C/D/E STRAIGHT
< CONTROL B
RDS
EON ー
MODE START MODE
+ 3.3 k + 4.7 k + 4.7 k + 6.8 k + 10.0 k + 22.0 k
∼ 2.6 ∼ 3.1 ∼ 3.4 ∼ 3.8 ∼ 4.1 ∼ 4.5
PROGRAM PROGRAM SPEAKER SPEAKER
STRAIGHT
> < A B
PTYSEEK PTYSEEK RDS
A/B/C/D/E PRESET/TUNING EON
MODE START MODE
IC502: M30622MWP-152FP (FUNCTION P.C.B.)
16bit µ-COM (Main CPU)
Function Check Table
Pin Function
36 P62/RXD0 FREQSW R, L destination
44 P52 ZONE2
58 P34 N_P Format NTSC/PAL check
59 P33 RDS
61 P31 TUNER
60,63 P32,P30 TUN1,TUN0 TUNING frequency
97 AN0 MODEL
A
ー
ー
Name Setting value
0 AM 10kHz step Commonly used with SDRN (RDS RxD)
TUNING frequency
step check
1 AM 9kHz step At power ON, switched to input
instantly and checked (when checking
R, L destination only)
ZONE 2 presence 0 Not present Commonly used with Zone 2 Mute (/MTZ2)
check
1 Present At reset cancellation, switched to input instantly and checked
0 NTSC Commonly used with CES (OSD Enable)
1 PAL At power ON, switched to input in an instant and checked
RDS presence check 0 Not present Commonly used with RDSE (RDS Enable)
1 Present At reset cancellation and at power ON, switched to input in an instant
and checked
Tuner presence check 0 Not present Commonly used with SDTP (PLL IC TxD)
1 Present At reset cancellation and at power ON, switched to input in an instant
and checked
0, 0 J *0 Commonly used with CEP, SCKP
step/limiter destination (PLL IC Enable, Clock)
check
Remitter presence check 0, 1 UC *1 At reset cancellation and at power ON, switched to input in an instant
and checked
1, 0 ATKBG *2
1, 1 RL *3
MODEL check 39~91/255 RX-V550
9~38/255 HTR-5750
0~8/255 RX-V450,HTR-5740,DSP-AX450
*0 AM: 531-1611kHz/ 9kHz FM: 76.0- 90.0MHz/100kHz
*1 AM: 530-1710kHz/10kHz FM: 87.5-107.9MHz/200kHz
*2 AM: 531-1611kHz/ 9kHz FM: 87.5-108.0MHz/ 50kHz
*3 Destination RL : Tuner Frequency is selected by Pin 36
Pin 36 AM
0 530-1710kHz/10kHz
1 531-1611kHz/ 9kHz
RX-V550/HTR-5750
RX-V450/HTR-5740/DSP-AX450
Remarks
(after activation of +5s)
(after activation of +5s)
(after activation of
VIDEO power supply)
(after activation of +5s)
(after activation of +5s)
(after activation of +5s)
FM
87.5-108.0MHz/100kHz
87.5-108.0MHz/ 50kHz
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