Read Harman Kardon CDR 2 (serv.man18) Service Manual online
- 15 -
Pin Number
Designator
I/O
Functions
40
AVSS2
I
Analog Ground Pin
41
AVDD2
I
Analog Positive Power Source Pin
42
XRST
I
Register Reset Pin. "L" Register Initialization
43
WLDON
I
Write LD Control Input. "L" Write APC Setting to Zero, "H" LD 0N
44
AGCON
I
Wobble AGC Enable Input. "H" AGC ON, "L" AGC reset
45
TESTAGC
O
Test Pin
46
ATFM
O
Wobble Signal Output
47
AGC1C
O
External CAP Connector Pin for AGC Response Speed Setting
48
AGC2C
O
External CAP Connector Pin for AGC Response Speed Setting
49
AGC3C
O
External CAP Connector Pin for AGC Response Speed Setting
50
AGND2
O
Decoupling Pin for Internal Reference Voltage
51
BHO
O
RRF Signal Bottom Level Output Pin
52
PHO
O
RRF Signal Peak Level Output Pin
53
TESTEQRFN
O
Test Pin
54
TESTEQRFP
O
Test pin
55
SLLPFP
I
LPF Input (+) for Auto Slice
56
SLLPEN
I
LPF Input (-) for Auto Slice
57
OSTCC
O
CAP Connector Pin for Equalizer Output Offset Canceller fc
58
WRF
O
Write RF Signal Output
59
NC(VSS)
-
60
AVSS1
O
Analog Ground Pin
61
AVDD1
I
Analog Positive Power Source Pin
62
RECDIN
I
RF Input for Recording Area Detection
63
RRF
O
Read RF Signal Output
64
MPXOUT
O
Multiplexer Output for Signal Monitoring
65
AUX1
I
Auxiliary Input Pin for Signal Monitoring (1)
66
AUX2
I
Auxiliary Input Pin for Signal Monitoring (2)
67
AUX3
I
Auxiliary Input Pin for Signal Monitoring (3)
68
GIN
I
Side Beam Signal (G) Input
69
HIN
I
Side Beam Signal (H) Input
70
EIN
I
Side Beam SignaI (E) Input
71
FIN
I
Side Beam SignaI (F) Input
72
HAVC
I
Main • Side Beam Signal Midpoint Voltage Input
73
DIN
I
Main Beam Signal (D) Input
74
CIN
I
Main Beam Signal (C) Input
75
BIN
I
Main Beam Signal (B) Input
76
AIN
I
Main Beam Signal (A) Input
77
RREF
I
Power Setting Voltage Input for Read APC
78
VRDCN
I
Laser Driver Control Amp (-) Pin for Read
79
VRDC
O
Laser Driver Control Output for Read
80
AVSS3
I
Analog Ground Pin
Use NC (unused) pin by connecting to VSS.
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