Adjustments; List Of Servicing Jigs; Caution On Adjustment; Power Block Check - Sony MDP-V10 Service Manual

During the adjustment, see the arrangement diagram
for adjustment parts on page from 7-8.

7-1. LIST OF SERVICING JIGS

• Oscilloscope
• Color monitor TV
• Digital voltmeter
• Frequency counter
• LD alignment disc HLV-8 (8-797-008-00) NTSC Ref. Disc 8
• Video CD test disc HLV-401 (4-978-510-01)
7-2. CAUTIONS ON ADJUSTMENT
• Disc load/unload operation must not be performed when servic-
ing with the unit laying down sideways. (Never press the OPEN
and CLOSE buttons (§)).
• When laying the unit down sideways, perform adjustment with
the left side down and turn the power ON.
• When adjusting the servo system, be sure to set up the unit hori-
zontally.

7-3. POWER BLOCK CHECK

7-3-1. Power Supply Check (Power Block (PS-96))

Mode Stop
Measuring equipment Digital voltmeter
UNREG +16V check
Pin !¡ of CN201 (Pin !£, GND)
Measurement point
Specified value 15.7 ± 1.5V
UNREG -16V check
Pin !∞ of CN201 (Pin !£, GND)
Measurement point
Specified value -16.0 ± 1.5V
REG +5 check
Pin 3 of CN201 (Pin !£, GND)
Measurement point
Specified value 5 ± 0.3V
REG -5V check
Pin 6 of CN201 (Pin !£, GND)
Measurement point
Specified value -5 ± 0.3V
EVER +5V check
Pin 1 of CN201 (Pin !£, GND)
Measurement point
Specified value 5 ± 0.3V
• Confirm that the power supply voltages satisfy the respective
specified values.
SECTION 7

ADJUSTMENTS

7-4. SYSTEM CONTROL SYSTEM ADJUSTMENT

7-4-1. Microprocessor Clock Adjustment (MB-97 board)

Mode
Measurement point
Measuring equipment
Adjusting element
Specified value
Adjustment method:
1) Adjust CT151 to 14,318,180 Hz ± 40 Hz.
7-1
MDP-V10
Stop
Emitter of Q153 (Pin 2 of IC204)
Frequency counter
CT151
14,318,180 Hz ± 40 Hz