Block Diagrams; Circuit Function Of Printed Circuit Board - Sony DVW-522 Maintenance Manual

Block Diagrams

7-1. Circuit Function of Printed Circuit Board

Board Name Circuit Function
(Part No.)
VPR-1 Video signal processor, D/A, Reference clock generator, Composite encoder
(A-8275-911-A: for PAL)
(A-8275-912-A: for NTSC)
APR-1 Audio signal processor, D/A interface
(A-8275-919-A: for PAL)
(A-8275-908-A: for NTSC)
DPR-36 Digital data processor (Decode, Error correction)
(A-8275-903-A: for PAL)
(A-8275-904-A: for NTSC)
EQ-45 PB RF equalizer
(A-8275-358-A: for PAL)
(A-8275-360-A: for NTSC)
CUE-1 CUE/LTC PB circuits
(A-8275-909-A: for PAL)
(A-8275-910-A: for NTSC)
SS-52 System, Servo, Digital DT control
(A-8275-913-A: for PAL)
(A-8275-902-A: for NTSC)
DT-34 DT driver
DR-200 Motors driver (Drum, Capstan, S/T reels, Threading, Reel shift, Cassette up/down)
Solenoids driver (Pinch, S/T brake, Cleaning)
CCM-15 Threading motor / Reel-shift motor
PD-35 Pinch solenoid connection
PTC-54 Threading FG
PTC-59 Cassette's tabs sensor
PTC-71 Reel position sensor
RM-82 S/T reel motor
SE-228 S/T reel FG
TR-78 S tension sensor
TR-79 T tension sensor, Thread/Unthread end sensor
CL-29 Cassette up/down motor, Cassette down sensors
PC-70 Cassette-in sensor, Cassette size sensor
FP-58 Upper panel function (SWs, LEDs) control
VR-152 Phone level RV, Phone connector
VR-207 Audio PB level circuit
SWC-17 Monitor select VTR status indicators (SWs, LEDs)
SWC-19 System set-up panel function control
KY-231 Lower control panel function
DP-176 Time counter display
PTC-69 Search dial sensor, Dial solenoid connection
CP-279 Rear connector board (Analog video) with output drivers
CP-280 Rear connector board (Analog audio)
Section 7
Board Name Circuit Function
(Part No.)
CP-282 Rear panel connector board (RF adaptor)
AC-139 AC connector board with breaker
SOPS-1019C Switching regulator
SOPS-1042A Switching regulator (inc. SOPS-1019C/1042S boards)
SOPS-1042D Switching regulator (AC-DC)
SOPS-1042S Switching regulator
MB-441 Mother board
HN-181 Connection board (Drum/Capstan/Reel-shift motors, CTL head, DT-34/HN-184/HN-185/PTC-59/PTC-71
boards)
HN-184 Connection board (Threading motor, Tape end sensor, and PD-35/PTC-54/TR-78 boards)
HN-185 Connection board with dew sensor (Tape top sensor, Cassette compartment, TR-79 board, Slip ring)
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