Aiwa AM-HX50, Service Manual

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Pit/groove judgement signal output. High = pit, Low = groove.
Matrix system power supply pin.
Pin for pickup photo diode connection. Generates the RF single by I pin.
Pin for pickup photo diode connection. Generates the RF single by J pin.
Pin for pickup photo diode connection. Generates the TE signal by E pin.
Pin for pickup photo diode connection. Generates the TE signal by F pin.
Pin for pickup photo diode connection. Generates the FE signal, ABCD signal and
WOO signal.
Matrix system ground pin.
Not used.
APC circuit output pin.
Not used.
APC circuit input pin.
Input pin for laser power setting.
EF balance adjustment pin.
Offset adjustment pin of TE signal.
Offset adjustment pin of FE signal.
Offset adjustment pin of ABCD signal.
VCA gain control pin.
Disc mode setting pin. High = low reflective ratio disc, Low = high reflective ratio
disc. Laser off when DSW0 and DSW1 are Low.
Disc mode setting pin. High = Track is chain of pits, Low = Track is groove. Laser off
when DSW0 and DSW1 are Low.
Not used.
The terminal to which pass-through capacitor for 1/2 VCC is connected.
1/2 VCC output pin.
Focus error signal output pin.
Tracking error signal output pin.
The signal representing the amount of main beam, is output from this terminal.
Pin for generating HFL signal during groove mode.
Not used.
Bottom signal output pin of RF signal.
Peak signal output pin of RF signal.
HFL signal (track ON/OFF) output pin.
RF system ground pin.
RF equalizer output pin.
RF equalizer input pin.
RF signal output pin.
The terminal to which the button-hold capacitor is connected.
PPIT
VCC
J
I
P
E
D
C
B
A
VEE
NC
LDD
NC
LDS
LDREF
TBAL
TOFF
FOFF
AOFF
SGC
DSW0
DSW1
NC
VR
VC
FE
TE
ABCD
HFLIN
NC
BOTTOM
PEAK
HFL
RFVEE
EQO
EQI
RFO
CHFL
O
—
I
I
I
I
I
I
I
I
—
—
O
—
I
I
I
I
I
I
I
I
I
—
—
O
O
O
O
I
—
O
O
O
—
O
I
O
—
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IC, LA9606
Pin No. Pin Name I/O Description