Yamaha CD-C600 Service Manual page 33

Pin No. Function Name
51 DSP_/RST
52 REG_READY0
53 SUB_READY0
54 KEY_O/C
55 KEY_USB
56 KEY_PLAY
57 POFF_detect
58 KEY_0
59 KEY_1
60 KEY_2
61 D33 Detect
62 OPU_SEL
63 DRV_MUTE
64 LIMIT_SW
65 MON_1
66 MON_2
67 N.C.
68 N.C.
69 N.C.
70 LED_POWER
71 LED_PDIRECT
72 LED_USB1
73 LED_USB2
74 N.C.
75 VSS/AVSS
76 SLED_CTL
77 VREF
78 VCC/AVCC
79 STBY
80 EEP_SCL
Key detection for A/D port
Key input (A/D) pull-up resistance 10 k-ohms
Ohm
V
A/D value (3.3 V = 255)
KEY0 (58 pin)
KEY1 (59 pin)
Ohm
V
A/D value (3.3 V = 255)
KEY2 (60 pin)
Ohm
V
A/D value (3.3 V = 255)
KEY_O/C (54 pin) OPEN/CLOSE
KEY_USB (55 pin) CD/USB
KEY_PLAY (56 pin) PLAY/PAUSE
I/O
O Reset signal to CD-DSP
I Input R_RDY signal from CD-DSP
I Input S_RDY signal from CD-DSP
I Detect [O/C] KEY on front-panel
I Detect [CD/USB] KEY on front-panel
I Detect [PLAY/PAUSE] KEY on front-panel
I Detect PRIMARY_POWER_OFF condition
I Detect KEY_0 signal on front-panel
PlayXchang, STOP, SKIP+
I Detect KEY_1 signal on front-panel
SKIP-, Pure direct, DISC5
I Detect KEY_2 signal on front-panel
DISC1, DICS2, DISC3, DISC4
I Reserved (Detect D+3.3)
I Input the signal to select OPU
0V : CD traverse
1.65V : DVD/CD traverse
O Mute control to actuator driver (IC1)
I Detect inner position SW on CD-traverse mechanism
I Input FMON0 (defect) signal from CD-DSP (IC2)
I Input FMON1(FSEQ) signal from CD-DSP (IC2)
O Control LED_POWER on front-panel
O Control LED_PURE DIRECT on front-panel
O Control LED_USB (orange) on front-panel
O Control LED_USB (green) on front-panel
GND DGND
O Reserved
Power Input the reference voltage (D+3.3V) for A/D port (pin 58–60, pin 62)
Power Input S+33
O Relay control on primary power
O Serial clock to EEPROM (IC304)
0 +820
0 0.2–0.3
0 15–25
— PLAY X CHANGE
— SKIP -/SEARCH -
0 +100
0 0.03-0.1
0 3–7
— DISC 4
0
0
0
Detail of Function
3.3V : DVD/CD traverse
Low --> Muting output on actuator driver
High --> Primary power relay is ON
+3.3 k +12.0 k
0.9–1.0 2.0–2.1
70–78 153–162
STOP SKIP +/SEARCH +
PURE DIRECT DISC 5
+3.3 k +6.8 k
0.8–0.9 1.65–1.75
60–70 125–135
DISC 3 DISC 2
CD-C600
+22.0 k
2.45–2.55
190–200
DISC 1
33