11
ELECTRICAL ADJUSTMENTS (Hi-Fi MODEL) ELECTRICAL ADJUSTMENTS (4HD MODEL)
PG (Pulse Generator) Shifter Adjustment (Fig. 4)
Test Points:
PT01 PIN
#
Main
Video Out Jack
Rear Panel
Adjust:
R599 (PG Shifter)
Main
The Pulse Generator (PG) Shifter determines the video head
switching point during playback. Misadjustment of the PG
Shifter may cause head switching noise in the picture and/or ver-
tical jitter.
1. Load the instrument with an alignment tape and play back the
color bar signal or monoscope signal.
2. Connect channel-1 scope probe (1V/div.: 50µsec/div.) to
PT01 PIN
#
. Trigger the scope on channel-1.
3. Connect channel-2 scope probe (1V/div.) to the Video Out
Jack.
4. Set the scope to (-) slope and adjust the PG Shifter control
VR599 so that the trailing edge of the SW 30Hz pulse is
placed 6.5H±0.5H (horizontal) lines before the start of verti-
cal sync pulse.
Stereo Separation Adjustment
Test Points:
(–) Terminal of C170
Main
Adjust:
R199
1. Connect scope prove to (–) Terminal of C170.
2. Receive RF signal.
RF signal condition
!
AUDIO: 1KHz 100% Mod.
@
RF OUT Level: 73dBµV
3. Adjust the STEREO SEPARATION Adjustment R199 so
that Audio signal (1KHz) level comes to be 700mVp-p.
PG (Pulse Generator) Shifter Adjustment (Fig. 5)
Test Points:
PT01 PIN
#
Main
Video Out Jack
Rear Panel
Adjust:
R595 (PG Shifter)
Main
The Pulse Generator (PG) Shifter determines the video head
switching point during playback. Misadjustment of the PG
Shifter may cause head switching noise in the picture and/or ver-
tical jitter.
1. Load the instrument with an alignment tape and play back the
color bar signal or monoscope signal.
2. Connect channel-1 scope probe (1V/div.: 50µsec/div.) to
PT01 PIN
#
. Trigger the scope on channel-1.
3. Connect channel-2 scope probe (1V/div.) to the Video Out
Jack.
4. Set the scope to (-) slope and adjust the PG Shifter control
VR599 so that the trailing edge of the SW 30Hz pulse is
placed 6.5H±0.5H (horizontal) lines before the start of verti-
cal sync pulse.
SWITCHING
SW30Hz
PULSE
VIDEO
OUTPUT
V. SYNC
6.5H±0.5
Fig. 4 - PG Shifter Adjustment
SWITCHING
SW30Hz
PULSE
VIDEO
OUTPUT
V. SYNC
6.5H±0.5
Fig. 5 - PG Shifter Adjustment
Summary of Contents for DV-K5J5A
Page 7: ...6 EXTENSION CABLE CONNECTION...
Page 41: ...40 CONNECTION DIAGRAM DV K8J5A...
Page 42: ...41 CONNECTION DIAGRAM DV K5J5A...
Page 43: ...42 POWER SUPPLY SCHEMATIC DV K8J5A K5J5A K5L5A...
Page 44: ...43 TIMER CIRCUIT DV K8J5A...
Page 45: ...44 TIMER CIRCUIT DV K5J5A K5L5A...
Page 46: ...45 SERVO SYSCON SCHEMATIC DIAGRAM DV K8J5A...
Page 47: ...46 SERVO SYSCON SCHEMATIC DIAGRAM DV K5J5A K5L5A...
Page 48: ...47 VIDEO AUDIO SCHEMATIC DIAGRAM DV K8J5A...
Page 49: ...48 VIDEO AUDIO SCHEMATIC DIAGRAM DV K5J5A K5L5A...
Page 50: ...49 PIF MPX SCHEMATIC DIAGRAM DV K8J5A...
Page 51: ...50 PIF SCHEMATIC DIAGRAM DV K5J5A K5L5A...
Page 53: ...52 4HD MONO PREAMP CIRCUIT DIAGRAM DV K5J5A K5L5A...
Page 54: ...53 OSD SCHEMATIC DIAGRAM DV K8J5A...
Page 55: ...54 OSD SCHEMATIC DIAGRAM DV K5J5A K5L5A...
Page 56: ...55 Hi Fi AUDIO SCHEMATIC DIAGRAM DV K8J5A...
Page 57: ...56 EXPLODED VIEW AND PARTS LIST DV K5J5A K8J5A...
