Service Manuals, User Guides, Schematic Diagrams or docs for : DENON Audio PMA-A100 hfe_denon_pma-a100_service_en
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e Ver. 3
Please refer to the
MODIFICATION NOTICE.
SERVICE MANUAL
MODEL JP E3 E2 EK EA E1 E1K E1C
PMA-A100
INTEGRATED AMPLIFIER
For purposes of improvement, specif cations and design are subject to change without notice.
Please use this service manual with referring to the operating instructions without fail.
Some illustrations using in this service manual are slightly different from the actual set.
e
D&M Holdings Inc.
S0226-1V03DM/DG1012 Copyright 2010 D&M Holdings Inc. All rights reserved.
WARNING: Violators will be prosecuted to the maximum extent possible.
SAFETY PRECAUTIONS
The following check should be performed for the continued protection of the customer and service technician.
LEAKAGE CURRENT CHECK
Before returning the unit to the customer, make sure you make either (1) a leakage current check or (2) a line to chassis
resistance check. if the leakage current exceeds 0.5 milliamps, or if the resistance from chassis to either side of the
power cord is less than 460 kohms, the unit is defective.
Be sure to test for leakage current with the AC plug in both polarities, in addition, in each power ON, OFF and STANDBY
mode, if applicable.
CAUTION Please heed the points listed below during servicing and inspection.
Heed the cautions! Inspect for safety after servicing!
Spots requiring particular attention when servicing, such Check that all screws, parts and wires removed or
as the cabinet, parts, chassis,etc., have cautions indicated disconnected for servicing have been put back in their
on labels. be sure to heed these causions and the original positions, inspect that no parts around the area
cautions indicated in the handling instructions. that has been serviced have been negatively affected,
Caution concerning electric shock! conduct an inslation check on the external metal
connectors and between the blades of the power plug,
(1) An AC voltage is impressed on this set, so touching
and otherwise check that safety is ensured.
internal metal parts when the set is energized could
cause electric shock. Take care to avoid electric (Insulation check procedure)
shock, by for example using an isolating transformer Unplug the power cord from the power outlet, disconnect
and gloves when servicing while the set is energized, the antenna, plugs, etc., and turn the power switch on.
unplugging the power cord when replacing parts, etc. Using a 500V insulation resistance tester, check that the
(2) Tere are high voltage parts inside. Handle with extra inplug and the externally exposed metal parts (antenna
care when the set is energized. terminal, headphones terminal, input terminal, etc.) is
1M or greater. If it is less, the set must be inspected and
Caution concerning disassembly and repaired.
assembly!
Through great care is taken when manufacturing parts
from sheet metal, there may in some rare cases be burrs CAUTION Concerning important safety
on the edges of parts which could cause injury if fingers parts
are moved across them. Use gloves to protect your hands. Many of the electric and structural parts used in the set
Only use designated parts! have special safety properties. In most cases these
The set's parts have specific safety properties (fire properties are difficult to distinguish by sight, and using
resistance, voltage resistance, etc.). For replacement replacement parts with higher ratings (rated power and
parts, be sure to use parts which have the same withstand voltage) does not necessarily guarantee that
poroperties. In particular, for the important safety parts safety performance will be poreserved. Parts with safety
that are marked z on wiring diagrams and parts lists, be properties are indicated as shown below on the wiring
sure to use the designated parts. diagrams and parts lists is this service manual. Be sure to
replace them with parts with the designated part number.
Be sure to mount parts and arrange the wires
as they were originally! (1) Schematic diagrams ......Indicated by the z mark.
For safety seasons, some parts use tape, tubes or other (2) Parts lists ......Indicated by the z mark.
insulating materials, and some parts are mounted away Using parts other than the designated
from the surface of printed circuit boards. Care is also parts could result in electric shock, fires
taken with the positions of the wores omsode amd clamps or other dangerous situations.
are used to keep wires away from heating and high
voltage parts, so be sure to set everything back as it was
originally.
2
DIMENSION
332
MAX
35
63
394
261
70
26
344
161
20
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