Panasonic SA-AK66 Service Manual page 23

14 Terminal Function of IC's
14.1.
| PinNo. | Mark | VO | Function
1H PDE! [Tracking signalinput1
2 PDF! [Tracking signalinput2
3 fvec tt [Powersupply
4 PDA! Focus signal input terminal 1__|
5 PDB |__| Focus signal input terminal 2
6 upp APC ampinput
7 LD JO CAPC amp output
BRE JO [RFsumming output
9 IRIN, [I |[Detector's input
|____ [Capacitor for OFTR connection __|
|____|Capacitor for HPF amp connection,
IO [BDO output ("H" : drop out)
HW JAPC control
I [Ground
£ =f/oafoufou
@|M}]—
IC701 (AN8885SBE1) Servo Amplifier
| PinNo. | Mark | VO | Function —
115 ~—*«|/RFDET |O _ |NRFDET output ("L" : detection)
16S [PDOWN [O __[Power-downinput_
H7_ SC JOFTR—[O_—*fOFTRoutput sid
gC INC COIN
ig ENV, OS T-ENVoutput sid
ao. INC INS
a1 INC SINC
j220CSTEN st [TE ampinput Cid
23——C*d(TEOUT [O__—*([TE ampoutput Cd
24 [FEOUT [0 |[FE amp output
250 FEN st —[FE ampinput
26S |VREF_ [0 __[Reference voltage output
a7 [TBAL |_| Tracking balance control
28 CFBAL[!_—_—s|Focus balance control
14.2. I1C702 (MN662790RSC) Servo processor/ Digital signal processor/
Digital filter/ D/A converter
SRDATA
ar supply input (for digital
circuit)
GND (for digital circuit)
Digital audio interface signal
output (Latches data at first
transition)
Microprocessor
clock signal input
Microprocessor
data signal input
Microprocessor
load signal input
Sense signal output (OFT,
FESL,MAGEND,NAJEND,PO
SAD,SFG) (Not used, open)
Focus servo feeding signal
output ("L" : Feed)
Tracking servo feeding signal
output ("L" : Feed)
vo |
jo.
oN
phe
3
Pet code block clock signal
a
co
=
lO NN.
Pt
MCLK command
MDATA command
command
SENSE
/FLOCK
/TLOCK
BLKCK
output (BLKCKf 75Hz
during normal playback)
External clock signal input for
sub-code Q resistor
ub-code Q code output
uting input ("H" : mute)
Status signal output
(CRC,CUE,CLVS,TTSTVP,F
CLV,SQCK)
Reset signal input
1/2-diveded clock signal of
crystal osscillating at MSEL =
"H" (fSMCK = 8.4672 MHz)
1/4-divided clock signal of
crystal oscillating at MSEL =
"L' @SMCK = 4.2336 MHz)
Frequency Selection Terminal
H = 33.8688 MHz L =
16.9344 MHz
MUTE
=a/a —_/oa/o o1 olp]—a
OO} N}O] oO
Traverse drive output |
raverse drive output
Spindle motor ON output ("L"
ON)
Mark |
SROATA
oMuTE
NININM nN wiho]—
23
| PinNo. | Mark | WO | Function
a a
output(forced mode output)
25 ECS Spindle motor drive signal
output
(servo error signal output)
NG
26 KICK ONG.
a7 TRD JO" Tracking drive output
as FOOD |O____—| Focus drive output
29 VREF D/A (drive) output (TVD, ECS,
Reference voltage input
a
output
A a Esha
output
32 FE
Focus error signal input
(analog input)
Tracking error signal input
(analog input) _
Vibration detection
input ("H" :detection)
Off-track signal input ("H"
track)
—_— TRCRS Ht ==—s| Track cross signal input
/RFDET RF detection signal input (°L"
: detection)
Dropout signal input ("H" :
Dropout)
LDON Laser on signal output ("H" :
ON)
41 PLLF2 WONG
42 DSLF2 Tracking Offset alignment
outpul/DSL Balance Output
(DA Output)
43 (WVEL ONC.
44 ARF! RF signalinput_
45 IREF |__| Reference current input___|
46 DRF DSL bias terminal (Not used,
open)
DSLF DSL loop filter terminal
PLLF PLL loop filter terminal
VCOF VCO loop filter terminal
50 AVDD2 Power supply input (for
analog circuit)
AVSS2 = |GND (for analog circuit)
signal
: off