Carver DPL33 sp sm

Page 1

CARVER

Model DPL-33

SERVICE MANUAL

CONTENTS Page
SAFETY INFORMATION ............................................................ I
SPECIFICATIONS ..................................

VOLTAGE CONVERSION (EX Vcr.
ADJUSTMENT....
BLOCK DIAGRAM.
IC BLOCK DIAGRAM..
PCB COMPONENT SIDE VIEWS ...............
PARTS LIST ................
REMOTE CONTROL...
EXPLODED VIEWS .............. .
PACKING METHOD VIEW... ...... ....35
SCHEMATIC DIAGRAMS .................................................... 36 -~ 37

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SAFETY INFORMATION

WARNING
Any person performing the procedures described in We recommend that the unit be tested only when line
this manual will be exposed to hazardous voltages and isolation is provided by an isolation transformer. The
the risk of electric shock. line cord of the unit must be disconnected and the
Carver Corporation assumes that any person who re- power Supply fully discharged betore any components
moves the cover from the unit has been properly are replaced. Failure to do so may result. In severe
trained in protecting against avoidable injury and damage to the unit and the risk oi electric shock.
shock. ' The safety tests described below must be performed
Therefore. the procedures described here are to be properly.
performed by qualified electronics service personnel
only.

CAUTION:

_J

Before returning the unit to the customer, one of the following safety tests must be perlormed.

1. Check the leakage current. Connect the unit to 120 VAC supply and turn the power switch ON". Usmg
an ammeter. measure the current between the neutral side of the AC supply and chassis ground of
the unit under test. If leakage current exceeds c.5mA, the unit is defective.

Reverse the polarity of the AC supply and repeat.

2. Measure the resistance from either side of the linecord to chassis ground. If it is less than 500k ohms. the
unit is defective.

WARNING - DO NOT return the unit to the customer if it fails one of these tests until the problem is located
and corrected.

CAUTION L 1 1- f

the user to the presence oI uninsulated
RISK 0: ELECTRIC SHOCK "dangerous voltage" Within the product's

enclosure. that may be oi suflicrent magnitude
to constitute a risk at electric shock to persons

fi
CAUTION The lightning ilash wrth arrowhead symbol
within an equilateral triangle is Intended to alert

00 NOT OPEN

CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK The exclamation polnt within an squliflletal

Do NOT REMOVE COVER (on BACK) triangle is intended to alert the user of the
NO USERSERVICEABLE PARTS INSIDE

presence OI important operating and main-
tenance (servicing) instructions in the literature
REFER SERVICING YO QUALIFIED PERSONNEL aCCOmDaw/mg the appliance.