Technics SL-EH60 - Servo Amplifier ICs (IC701, IC702)

SL-EH60 |
@ 1C701 (AN8835SBE1): Servo Amp.
Terminal
Name
1 PDA Focus (A-ch) signal input terminal
Focus (B-ch) signal input terminal
Power supply terminal
P
Vv
L
rc
DB
cc
PD
LD
RF
a
FIN
O
Q
(?)
AGC detection capacitor input
ARF RF signal output
CSBRT OFTR capacitor connection terminal
CEA
=
PF-AMP capacitor connection terminal
Dropout detection control signal output
rc
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GND GND terminal
16 | CROSS
17 OFTR
Vibration detection signal output (“H”: det.)
Envelope output terminal
ENV
Tracking error zero cross output
Off track detection signal output (“H”: det.)
Tracking error signal output
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© 1C702 (MN662741RPA): cessor, Digital Filter, D/A Converter
Terminal
Name
BCLK 0 | Bit clock output for serial data
nae LRCK 0 UR clock signal output
3 | SRDATA ea Serial data output
ad DVop1 lee Power supply input (for digital circuit)
5 | DVss1 | — | GND (for digital circuit)
pe | xe [oe Digital audio interface signal output
Microprocessor command clock signal input
MCLK ca (Latches data at first transition) e Z
Fz MDATA icy Microprocessor command data signal input
ee MLD bai Microprocessor command load signal input
Sense see output
10 | SENSE (OFT, FESL, MAGEND, NAJEND, POSAD,
SFG) (Not used, open)
/FLOCK 0 | Focus servo feeding signal output (“L”: Feed)
Tracking servo feeding signal output
eee TLOCK ei (“L”: Feed) (Not used, been
Sub-code block clock signal output
BLKCK 0 | (fBLKCK = 75 Hz during normal playback)
xternal clock signal input for sub-code ©
sack | I lst |
SUBQ | o | Sub-code Q code output
DMUTE i Muting input (“H”: Mute)
Status signal output
STAT 0 | (CAC, CUE, CLVS, TTSTVP, FCLV, SQCK)
18 | ie Reset signal input
1/2-divided clock signal of crystal oscillating at
MSEL = “H”
1/4-divided clock signal of crystal oscillating at
MSEL = “L”
(fSMCK = 4.2336 MHz) (Not used, open)
1/192-divided clock signal of crystal oscillating
} 20 | PMCK = | (PMCK = 88.2 kHz) (Not used. open)
| trav | o | Traverse forced feed output
z | wo [0|teesemeomt
23 | pc fol Spindle motor ON signal output (“L”: ON)
Spindle motor drive signal output
(forced mode output)
Spindle motor drive signal output
(servo error signal output)
| 26 | Kick pulse output
Tracking drive output
f28 | FoD | Focus drive output
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Vibration detection signal input (“H”: detection)
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