Denon GR 535 Service Manual

Page 1

D E l l : I HI-Fi Component/Receiver

SERVICE MANUAIV.
MODEL era-555, (SR-535

GR-SES

(SR-535

TABLE OF CONTENTS

SPECIFICATIONS IGRvSSS, GR~535I
CHASSIS LAYOUT (GR-555, GR»535I
EXPLODED VIEW OF CHASSIS AND CABINET (GR- 555, GR-535) ..........
DISASSEMBLY INSTRUCTIONS (GR 555, GR- 535) .......................
METHOD OF ADJUSTMENT AND POWER AMPLIFIER ALI GNVIENT (GR- 555 GP 535) .... V , 8
THE VIEWOF THE FRONT ENDIGR 555 GR- 535) ............................... IO
PRINTED CIRCUIT BOARD PATTTERNS CIRCUIT DI AGRAMS AND PARTS LIST
INPUT TERMINAL UNIT (GR- 555, GR 535) ETC 2I3 .

[F UNIT OF FM SECTION IGR~555I HUXAOO3E ......... . M. 12
IF UNITOF FM SECTION (GR-535) HUX-OOBA ...... 14 I
EOUALIZER AMP UNIT (GR-555, GR~535I EUX-OOS .H. ............ . . . .H IS I
MPX & METER UNIT (GR-555, GRr535I ETC-212A/I3I .... ........................ . I6
DOLBY NR UNIT (GR-555) ETCZIS ................. ' ........................... 18
PRE TONE CONTROL UNIT (GR-555, CST-(535) AUXVOZO ., ........ IV.... . ......... 20
TONE CONTROL UNIT (GR-555, GRVS35I AUX-OISA,B ... ............ V . . VVVVVVV 21
VOLUME&SW|TCH UNIT(GR-555,GR535) ETCQOSA/B ...... .. .,.VV,..V...V..., I 23
POWER SOURCE 84 PROTECTOR UNIT IGRVL . , Ch .735) E IT; 71 IA/Ii V I H. 24
POWER AMP UNITIGR-SSS GR- 5'35) IUXIIIzA/B ........ . V . V V I 26
CHASSIS AND CABINET GROUP PARTS L 0T IGR) )5 (SR-5 ..... .. ., VVVVV . 27
WIRING DIAGRAM (GRSBJ GR r>35) ................ I V V 29
BLOCK DIAGRAM (GR 555 GR 535) ...................... 3

NIPPON COLUMBIA BIT, LTD

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GER-555. 69-535

GR-555,GR-535 DISASSEMBLY INSTRUCTIONS

In case of repairing the printed circuit board, it is more easily disassembled in the following order.
(1) Repairing of power amplifier unit, power supply and protector unit.
1. Remove the wooden cabinet by taking out the four screws fastening it.
2. Remove the bottom cover by taking out all the scmws (four) fastening it.
3. Take out the upper two screws of the four ones (two each at right and left] fastening the PA. chassis and side bracket,
and loosen the lower two screws.
. Fig. 1 shows the side view of the set without its wooden cabinet and bottom cover. The lengthwise black part in the figure
is the PA. chassis.
4. Push up the front panel at the screw part (loosened as in item 3) and the chassis will be two blocks perpendicular to
each other. Thus the power amplifier unit and power supply unit can be easily removed or can have their parts replaced.
- Fig. 2 shows the side view of the set after the sequence of disassembly from item 1 to 4 has been completed, and Fig. 3 is
the oblique view.
, In the above-mentioned state, take utmost care so that the bottom of both the back~and front panel may not slide.

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