Sony PCM-1630 Operation And Maintenance Manual page 4

2.
SERVICE INFORMATION
2-1. Repacking . . . . . . . . . . . . . . . . . . . . . . . . 2-1
2-2. Rack Mounting . . . . . . . . . . . . . . . . . . . . 2-2
2-3. Case Removal . . . . . . . . . . . . . . . . . . . . . 2-3
2-4. Heat Sink Assy Removal . . . . . . . . . . . . . . 2-4
2-5. Caution for PS-81 Board and
Fuse Replacement . . . . . . . . . . . . . . . . 2-5
3. ELECTRICAL ADJUSTMENTS
3-1. Equipments Required . . . . . . . . . . . . . . . . 3-1
3-2. +5 V·±22 V Voltage Adjustment
(PS-81 Board) . . . . . . . . . . . . . . . . . . . 3-1
3-3. AD Conversion Level Adjustment
(AD-23 Board) . . . . . . . . . . . . . . . . . . . 3-2
3-4. DA Conversion and Analog Output Adjust-
ments (DA-15 Board) . . . . . . . . . . . . . . 3-4
3-4-1. Oscillator Frequency Adjustment . . . . . 3-4
3-4-2. Level Adjustment . . . . . . . . . . . . . . . . 3-5
3-4-3. Output Offset Adjustment . . . . . . . . . . 3-6
3-5. Composite Digital Output and
Clock Adjustments (SIF-1 Board) . . . . . . 3-7
3-5-1. Composite Digital Output Level
Adjustment . . . . . . . . . . . . . . . . . . 3-8
3-5-2. Composite Sync Phase Adjustment .... 3-8
3-5-3. Master Clock Duty Adjustment . . . . . . . 3-8
3-5-4. External Synchronization Adjustment .. 3-8
3-6. Sync and Data Extraction Level Adjustment
(DEC-15 Board) . . . . . . . . . . . . . . . . . . 3-9
-2-
A.
B.
c.
D.
SEMICONDUCTOR PIN ASSIGNMENTS
Diode . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1
Transistor . . . . . . . . . . . . . . . . . . . . . . . . . A-1
IC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2
BLOCK DIAGRAMS AND
CIRCUIT DESCRIPTION
AD-23 Board . . . . . . . . . . . . . . . . . . . . . . B-3
DA-15 Board . . . . . . . . . . . . . . . . . . . . . . B-7
ENC-2 Board . . . . . . . . . . . . . . . . . . . . . . B-12
SIF-1 Board . . . . . . . . . . . . . . . . . . . . . . . B-16
DEC-15 Board . . . . . . . . . . . . . . . . . . . . . B-18
MT-16 Board . . . . . . . . . . . . . . . . . . . . . . B-21
SCHEMATIC AND CIRCUIT BOARD
DIAGRAMS
AD-23 Board . . . . . . . . . . . . . . . . . . . . . . C-3
DA-15 Board . . . . . . . . . . . . . . . . . . . . . . C-7
ENC-2 Board . . . . . . . . . . . . . . . . . . . . . . C-13
SIF-1 Board . . . . . . . . . . . . . . . . . . . . . . . C-21
DEC-15 Board . . . . . . . . . . . . . . . . . . . . . C-25
MT-16 Board . . . . . . . . . . . . . . . . . . . . . . C-31
DSP-3, PS-81 and FU-32 Board . . . . . . . . . . C-36
MB-11 Board . . . . . . . . . . . . . . . . . . . . . . C-43
Frame Wiring . . . . . . . . . . . . . . . . . . . . . . C-53
REPLACEABLE PARTS
D-1. Exploded Views and Parts List . . . . . . . . . . D-1
D-2. Electrical Parts List . . . . . . . . . . . . . . . . . . D-9
D-3. Accessories Supplied . . . . . . . . . . . . . . . . . D-30
E. PARTS CHANGE INFORMATION