Denon D RCD-M37, Service Manual

Page: 39 / 85

39
RCD-M37 / RCD-M37DAB / D-E500 / D-M37
Pin
No.
Symbol I/O Description Default Remarks
83
RFEQo
O
3AI/F
RF equalizer circuit output pin. O
Connect to RFRPI by
0.1uF, to RFI by 4700pF.
84
VRo
O
3AI/F
1.65 V reference voltage output pin. O
Connected to VREF and
PVREF inside of IC.
Connect 0.1uF+100uF.
85
RESiN
O
3AI/F
Pin for connecting a resistor for reference
current generation.
O
Connect 22k ǡ //0.01uF.
86
VMDiR 㧙
Reference voltage output pin for LD APC.
㧙
Connect 0.1uF
87
TESTR
O
3AI/F
LPF connection pin for RFEQO offset
correction circuit.
O
Connect more than
0.015uF.
88
AGCi
I
3AI/F
RF signal AGC amplifier input pin I
89
RFo
O
3AI/F
RF signal generation amplifier output pin O
90
RVDD3 㧙
Power supply for 3.3V RF amplifier core
circuit.
㧙
91
LDo
O
3AI/F
Laser diode amplifier output pin.
92
MDi
I
3AI/F
Monitor photodiode amplifier input pin. I
Reference
Voltage=178mVtyp.
93
RVSS3 㧙
Grounding pin for RF amplifier core circuit
㧙
94
FNi2
I
3AI/F
Main beam signal input pin.
To be connected to PIN diode C.
I
95
FNi1
I
3AI/F
Main beam signal input pin.
To be connected to PIN diode A.
I
96
FPi2
I
3AI/F
Main beam signal input pin.
To be connected to PIN diode D.
I
97
FPi1
I
3AI/F
Main beam signal input pin.
To be connected to PIN diode B.
I
98
TPi
I
3AI/F
Sub beam signal input pin.
To be connected to PIN diode F.
I
99
TNPC
O
3AI/F
TNI/TPI input common capacitor connection
pin.
O
Connect to VRO by
capacitor.
100
TNi
I
3AI/F
Sub beam signal input pin.
To be connected to PIN diode E.
I
* 3A I/F : : 3 V analog circuit input/output pin.
1.5 I/F : 1.5Vdigital input/output pin.
3 I/F
: 3 V digital input/output pin.
Note: The servo output pins (FOO, TRO, FMO, and DMO) become undefined or GND level under the following
conditions:
x /RST pin Low
x Crystal oscillation stopped according to the instructions by the Stop crystal oscillation command
x Power supply for CD is OFF.
x
SRAMSTB pin = High
To prevent the undefined pin states from affecting the servo circuitry or any other mechanical blocks in the
system, appropriate measures should be taken, such as using a driver IC supporting a standby feature to
place the system in standby mode while either of the above conditions is satisfied.