Sony DNW-A75 - 2-7. Circuit Function

2-8
DNW-A75/A75P
2-7. Circuit Function
System configuration No. Board name Circuit function
Digital process 1 DPR-118 Digital data processor (Audio/Video processor)
2 SDI-41 4:2:2 component serial digital interface with Embedded audio
Video process 3
*1
VPR-47 Video signal processor (D-A, Reference clock generator, Composite encoder)
4 DEC-110 Analog composite decoder
Analog BETACAM 5
*1
DM-89 RF demodulator for Analog Betacam PB
video PB process
6
*1
TBC-24 TBC (A-D, Write clock generator)
7
*1
TBC-23A TBC (Sequence and Reference)
Audio process 8
*1
AU-260 Analog Betacam audio (LAU) PB circuit
9 APR-40 Audio signal processor, AES/EBU interface
RF process !/ EQ-75 RF equalizer (REC current control, PB EQ, Analog BETACAM PB buffer, Inner
error correction)
System/servo control !- SS-83 System control, Servo control, DT control
!= MS-58 Solenoids driver (Pinch, Brakes, Cleaning), Sensors input, Demagnetization head driver
![
*1
DR-315 Motors driver (Drum, Capstan, Reels, Threading, Reel shift, Cassette up/down)
!] TC-102 TC REC/PB circuit, TC/FULL erase OSC
!\ DT-34D DT driver
Mech. deck !; SE-461 Connection board with Condensation sensor
driver/sensor
!' PTC-54 Threading FG
!, CCM-15 Threading motor
!. CCM-15 Reel shift motor
@/ PD-35 Pinch solenoid connection, Tape end sensor connection
@- TR-79 T tension sensor, Threading-end and Unthreading-end sensors
@= PTC-59 Cassette’s holes sensor
@[
*2
RM-82/181 T reel motor
@] SE-344 T reel FG
@\
*2
RM-82/181 S reel motor
@; SE-344 S reel FG
@' PTC-71 Reel position sensors
@, TR-78 S tension sensor
*1: The full name of each mounted board is as follows:
Model name VPR-47 DM-89 TBC-24 TBC-23A AU-260 DR-315
DNW-A75 VPR-47 DM-89 TBC-24 TBC-23A AU-260 DR-315K
DNW-A75P VPR-47P DM-89P TBC-24P TBC-23AP AU-260P DR-315K
*2: Either the RM-82 or the RM-181 board is used.
2-7. Circuit Function