Denon PMA 717 Service Manual

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D E N O I I Hi-FiPre-Main Amplifier

SERVICE MANUAL

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2 MODEL PMA-717

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; SOLID STATE ,J

: PRE MAIN AMPLIFIER

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CONTENTS

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: SPECIFICATIONS ............................................................... 2

: BLOCK DIAGRAM .............................................................. 2

I DESIGNATION AND FUNCTIONS OF FRONT PANEL CONTROLS ..................... 3

:- CONNECTIONS ................................................................. 3

1 METHOD OF ADJUSTMENTS ..................................................... 4

E REMOVAL OF EACH SECTION ................................................... 5

: PRINTED WIRING BOARD PATTERNS AND PARTS LIST

I ETCO717 POWER & CONTROL UNIT ............................................ 6

. CONNECTION DIAGRAM ......................................... '. ............... 8

' WIRING DIAGRAM .............................................................. II

{ SEMICONDUCTORS ............................................................. 11

I EXPLODED VIEW OF CHASSIS AND CABINET & P/LIST . . . . . . .; ..................... 12

I NIPPON COLUMBIA CO. LTD.
APR 1984

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PRINTED WIRING BOARD PATTERNS AND PARTS LIST

ETCO717 POWER 81 CONTROL UNIT PARTS LIST

3:? Part No. Part Name 81 Descriptions 3: Part No. Fan Name 81 Descriptions
SEMICONDUCTORS CAPACITORS (not included Ceramic 15%, 110%, 50V Type)
10001 2630250008 NJM45580 IJRCI IC 0005, 2544161050 100,,F 520% 6.3V ELECTROLYTIC
10005, 2630206007 pPC1225H (NEC) IC 006 .
006 0007, 2551121067 0.022AAF 85% 50v PLASTIC FILM
TR001, 2730198015 25018151BLI TRANSISTOR 008 -
002 0009, 2551121009 0.0068IIF 25% 50v PLASTIC FILM
TR017, 2730237031 230257710/Y) TRANSISTOR 010
018 0011, 2544146004 10F 50\/ ELECTROLYTIC
TR019, 2710136039 2SA110210/Y) TRANSISTOR 012
020 0015, 2551122008 0.047IIF :5% 50v PLASTIC FILM
TR021 2730163040 25017351DI/E TRANSISTOR 016
TR022 2710072025 26A850101/1E) TRANSISTOR 0017, 2544146004 10F 50v ELECTROLYTIC
TR023 2740088005 2501406101/IYI TRANSISTOR 018
TR024 2710178039 25A564A1R) TRANSISTOR 0021 2544146004 10F 50v ELECTROLYTIC
TR101, 2750045009 25K389IBLI/IVI FET ~024
102 0025, 2544142008 22,1F 35v ELECTROLYTIC
0001, 2760049008 1520 76 DIODE 026
002 0035, 2533603008 10pF :O.5pF 50v CERAMIC
0005, 2760049008 132076 DIODE 036
006 0039 2544145005 0,47,1F 50v ELECTROLYTIC
0009, 2760049008 182076 DIODE C042 2544060025 lyF 100v ELECTROLYTIC
010 0045, 2531027000 0.1111: +80,-20% 50v CERAMIC
0013, 2760049008 152076 DIODE 046
014 0047, 2543013023 33;.IF 10v ELECTROLYTICIB P)
0019, 2760049008 182078 DIODE 048
020 0049, 2551121083 0.03311F 25% 50v PLASTIC FILM
0021 2760249002 H218-2 ZENER 050
0022 3939051004 SEL1110R (RED) LED 0051, 2551085006 0,1211F 210% 50v PLASTIC FILM
0023 2760232006 0080 DIODE 052
~026 0053, 2551120013 0.00120}: =5% 50v PLASTIC FILM
0031, 3939052003 SEL131OG IGREENI LED 054
033, 0055, 2551120097 0.00560F 55% 50v PLASTIC FILM
035 056
0037 3939154008 PR5552K-1 (RED) LED 0059, 2544146004 IIIF 50v ELECTROLYTIC
060
RESISTORS (not Included Carbon FIlrn :5%,1/4W Type} C062, 2544146004 1MP 50V ELECTROLYTIC
063
0064 2544050006 100pF 50v ELECTROLYTIC
0066, 2546072008 5600IIF 220% 45v ELECTROLYTIC
067
0068 2531053003 0.01IIF +100,-0% 500v CERAMIC
0071 2531024003 0.01,IF +80,-20% 50v CERAMIC
~074
0077, 2551120000 0.00111F :5% 50v PLASTIC FILM
078
0079, 2531024003 0,01LF +80,-20% 50v CERAMIC
080
0093, 2531027000 0.1,IF +80,-20% 50v CERAMIC
094
, 0097 2531024003 0.0111F +80,-20% 50v CERAMIC
25%1/2 CAR 0213 2531024003 0.01pF Seq-20% 50V CERAMIC
$.57? ,2 035139.! 0301, 2551120084 0.0047IIF 25% 50v PLASTIC FILM
302
0303, 2533603008 10pF 20.5pF 50v CERAMIC
304
=5 0305 2531024003 0.0111F +80,-20% 50v CERAMIC
211029006 VAR'ABLE RES'STOH 10" °hm C307 2531024003 0.01IIF +80,-2o% 50v CERAMIC
FOR MA' 0309, 2531053003 0.01IIF +100,~0% 50v CERAMIC
VR002 2110245106 VARIABLE RESISTOR 250k ohm 310
FOR BALANCE 0311, 2531007004 33000F :10% 50v CERAMIC
VR005 2110246118 VARIABLE RESISTOR 100k ohm 312
FOR BASS 0313 2544139008 100,1F 25v ELECTROLYTIC
VR006 2110246118 VARIABLE RESISTOR 100k Ohm
FOR TREBLE