Kenwood DP-3010 Service Manual page 12

DP-3010
20
5-2. Pin Connections
Port name
CIRCUIT DESCRIPTION
Operation
FS1,FS2
MAIN BEAM (l—V} CONVE="ER INPUT PIN
VAEF REFERENCE VOLTAGE SUPPLY OUTPUT PIN (+22 V)
TSi
SUB-BEAM (I— Vi CONVERTER INPUT PIN
TSF, TS2F SUB-BEAM (!— Vv: CONVER™=R OUTPUT PIN
TS2
SUB-BEAM (|—Vi CONVERTER INPUT PIN
Vcc
POWER (+5 V}
RFN i RF AMP ANTI-CHASE INOUT PIN
+
RFO
| RF AMP OUTPUT PIN
RFI i RF SIGNAL INPUT PIN
SLP POSITIVE PHASE SLICE LEVEL CONTROL AMP PIN
SLN ANTI-PHASE SLICE LEVEL CONTROL AMP PIN
GND
GND PIN
EFMO
EFM SIGNAL DATA SLICE OUPUT PIN. OPEN COLLECTOR OUTPUT
ZCL2
POSITIVE PHASE STATUS COMPARATOR INPUT PIN
STATUS COMPARATOR OUTPUT PIN, OPEN COLLECTOR OUTPUT
POSITIVE PHASE STATUS COMPARATOR INPUT PIN
STATUS COMPARATOR OUTPUT PIN, OPEN COLLECTOR OUTPUT
| ANALOG SWITCH CONTROL SIGNAL INPUT PIN
ANTI-PHASE TRACKING SERVO AMP INPUT PIN
TRACKING SERVO AMP OUTPUT PIN
FOCUS SERVO AMP OUTPUT PIN
ANTI-PHASE FOCUS SERVO AMP INPUT PIN
CONDENSOR CONNECTION FOR THE PRODUCING OF THE FOCUS SEARCH SIGNAL
INTERNAL VOLTAGE SUPPLY CONTROL PIN
FOCUS ERROP SIGNAL IN°UT PIN
FOCUS ERROR AMP OUTPUT PIN
+
ANTI-PHASE FOCUS ERROR AMP INPUT PIN
| POSITIVE PHASE FOCUS ERROR AMP INPUT PIN
DP-3010
CIRCUIT DESCRIPTION
5-3. OUTLINE
The Focus Tracking Servo C for the Pick-up AMP in the
Three-Beam Method, TN8101N, is used with the Servopro-
cessor TC9201BF.
Also, the TA8101N consists of an RF AMP, Focus AMP,
Tracking Error AMP, Focus Error Output AMP. (Focus
Servo}, Tracking Error Output AMP (Tracking Servo), Data
Slicer and Status Comparator. The following will explain
the operation of these.
CPU PROCESSING DURING POWER ON
POWER ON
Focus gain adjustment
Play or search
System mode
Status comparator data
Diagram 5-1 shows a simple explanation of the System
Mode Division in that the whole stream of the MPU pro-
cessing of each operation can be seen.
Laser diode ON
Internal register set (TC9201BF)
At the point of just focus (Cross over point) the focus
servo is ON
Routine for cases when focus
cannot be applied
FOK NG processing
System mode details are in reference to TC9201BF technica: information
ZC1 side
ZC2 side
Details
Focus gain adjustment FEI
Focus search
+
Correction of pick-up dispersion in the focus servo SBAD P
Focus servo ON at cross over point
Tracking gain adjustment RFRP | Correction of pick-up dispersion in the tracking servo
Nonp' y, normal play SBAD Play (detection of scratches and shocks)
Special 'play
Tracking search
| Refer to TC9201 BF
RERP efer 10 TC9201 BF technical intormation
Song beginning. fast forward, rewind
FE! focus error signal. SBAD: sub-beam summ:ng signa
TSO tacking ertor signal, RFRP: RF rippie signa
Diagram 5-1 System Mode Division
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