Yamaha RX-V450, Service Manual

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49
RX-V550/HTR-5750
RX-V450/HTR-5740/DSP-AX450
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 + 2.2 k + 3.3 k + 4.7 k + 6.8 k + 10.0 k + 22.0 k
V 〜 0.3 〜 0.7 〜 1.0 〜 1.5 〜 2.0 〜 2.6 〜 3.1 〜 3.6 〜 4.0 〜 4.4
ADKEY 0 TUNING
ー
INPUT PRESET/TUNING PRESET/TUNING
A/B/C/D/E
TONE
STRAIGHT
SPEAKER SPEAKER
94Pin P102/AN2 MODE MODE > < CONTROL B A
ADKEY 1 MULTI-CH
MEMORY FM/AM PRESET/TUNING
PTYSEEK PTYSEEK
EON
RDS
ー ー
93Pin P101/AN1 INPUT MODE START MODE
IC502: M30622MWP-152FP (FUNCTION P.C.B.)
16bit
µ
-COM (Main CPU)
Function Check Table
Pin Function Name Setting value Remarks
36 P62/RXD0 FREQSW R, L destination 0 AM 10kHz step Commonly used with SDRN (RDS RxD) (after activation of +5s)
TUNING frequency
step check
1 AM 9kHz step At power ON, switched to input
instantly and checked (when checking
R, L destination only)
44 P52 ZONE2 ZONE 2 presence 0 Not present Commonly used with Zone 2 Mute (/MTZ2) (after activation of +5s)
check
1 Present At reset cancellation, switched to input instantly and checked
58 P34 N_P Format NTSC/PAL check 0 NTSC Commonly used with CES (OSD Enable) (after activation of
VIDEO power supply)
1 PAL At power ON, switched to input in an instant and checked
59 P33 RDS RDS presence check 0 Not present Commonly used with RDSE (RDS Enable) (after activation of +5s)
1 Present At reset cancellation and at power ON, switched to input in an instant
and checked
61 P31 TUNER Tuner presence check 0 Not present Commonly used with SDTP (PLL IC TxD) (after activation of +5s)
1 Present At reset cancellation and at power ON, switched to input in an instant
and checked
60,63 P32,P30 TUN1,TUN0 TUNING frequency 0, 0 J *0 Commonly used with CEP, SCKP (after activation of +5s)
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
97 AN0 MODEL 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 FM
0 530-1710kHz/10kHz 87.5-108.0MHz/100kHz
1 531-1611kHz/ 9kHz 87.5-108.0MHz/ 50kHz
IC502: M30622MWP-152FP (FUNCTION P.C.B.)
16bit
µ
-COM (Main CPU)
Pin Pin Function Function
Function
Detail of Function Classified I/O Comment
name
66 P26/A6 P26 TMT TUNER MUTE TUNER O (Internally pulled up when
microprocessor is used)
67 P25/A5 P25 TUNED TUNED TUNER I(IPU) External pull-up not required because of
being pulled up within microprocessor
68 P24/A4 P24 /ST TUNER /ST TUNER I(IPU) External pull-up not required because of
being pulled up within microprocessor
69 P23/A3 P23 PRY Power relay output Main_2 O
70 P22/A2 N.C.
71 P21/A1 P21 ERY Surround SP relay output Main_2 O
72 P20/A0 P20 MBRY Front B SP relay output Main_2 O
73 P17/D15/INT5 INT5 PDET Power Down DETECT INT Main_2 INT
74 P16/D14/INT4 INT4 PSW Standby SW INPUT OPE INT
75 P15/D13/INT3 INT3 REM Remote controller input OPE INT
76 P14/D12 P14 MARY Front A SP relay output Main_2 O
77 P13/D11 N.C.
78 P12/D10 P12 /4ohm IMPEDANCE control Main_2 O
79 P11/D9 P11 8/4DET IMPEDANCE select SW detection Main_2 I
80 P10/D8 P10 PRI Protection excess current detection Main_1 I
81 P07/D7 P07 PSV PowerSave Internal O
82 P06/D6 N.C.
83 P05/D5 P05 /BLK FL Driver OFF OPE O
84 P04/D4 P04 ISA INPUT SEL. Rotary A OPE I
85 P03/D3 P03 ISB INPUT SEL. Rotary B OPE I
86 P02/D2 P02 TONEA Tone Con. Rotary A OPE I (RX-V550 only)
87 P01/D1 P01 TONEB Tone Con. Rotary B OPE I (RX-V550 only)
88 P00/D0 P00 VRA Volume Rotary A OPE I
89 P107/AN7 P107 VRB Volume Rotary B OPE I
90 P106/AN6 AN6 PRV Protection power supply voltage detection MAIN 1/MAIN 2 AD
(internal)
91 P105/AN5 AN5 PRD Protection DC detection Main_1 AD
92 P104/AN4 AN4 PLDET POWER LIMITTER DETECT Main_1 AD
93 P103/AN3 AN3 THM Temperature detection Main_1 AD
94 P102/AN2 AN2 ADKEY0 Key AD input 0 OPE AD
95 P101/AN1 AN1 ADKEY1 Key AD input 1 OPE AD
96 Avss Avss Avss AD ground Vss
97 P100/AN0 AN0 MODEL Model check Internal AD
98 Vref Vref Vref AD reference (+5v)
99 Avcc Avcc Avcc AD power supply Vcc(BU)
100 P97/Adtrg/Sin4 P97 CEFD FL Driver CE OPE O
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 + 3.3 k + 4.7 k + 4.7 k + 6.8 k + 10.0 k + 22.0 k
V 〜 0.3 〜 0.7 〜 1.0 〜 1.5 〜 2.0 〜 2.6 〜 3.1 〜 3.4 〜 3.8 〜 4.1 〜 4.5
ADKEY 0 TUNING INPUT BASS/TREBLE BASS/TREBLE
CONTROL
PROGRAM PROGRAM
STRAIGHT
SPEAKER SPEAKER
ー
94Pin P102/AN2 MODE MODE + - > < A B
ADKEY 1 MULTI-CH
MEMORY
PRESET/TUNING PRESET/TUNING
FM/AM A/B/C/D/E PRESET/TUNING
PTYSEEK PTYSEEK
EON
RDS
93Pin P101/AN1 INPUT > < MODE START MODE