Service Manuals, User Guides, Schematic Diagrams or docs for : DENON Speaker System Pack Speaker System Pack Denon - SYS-76HT Схема SYS-76HT
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For U.S.A.,Canada
& Europe model
SERVICE MANUAL Ver. 1
MODEL SYS-76HT
SPEAKER SYSTEM PACK
For purposes of improvement, specifications 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.
TOKYO JAPAN
Denon Brand Company, D&M Holdings Inc.
X0251 V.01 DE/CDM 0507
SYS-76HT
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.
2
NORMAL
U203
LINE INPUT CROSSOVER VOL SW202 REVERSE PHASE POWER AMP
U201 CONTROL SPEAKER
DIRECT
MODE SW
HPF U203
ALC
DIRECT MODE
DSW-76 BLOCK / LEVEL DIAGRAM
ATT
+50.5dB 20V/4ohrm THD 0.7% (ALCON)
(dB) at 55Hz
3
+20dB
40
20 +4.34dB
75mV
0
-10 -1dB
+27.2dB 20V/4ohrm THD 0.7% (ALCON)
(dB)
at 55Hz
40
+4.34dB
DSW-76 Section
20 +1.84dB
830mV
0
-10 -1dB
SYS-76HT
DSW-76 Section SYS-76HT
DSW-76 SEMICONDUCTORS
Only major IC's are shown,generai IC's etc. are omitted to list.
IC's
TL074CN (U201-203) PRE-AMP P.W.B. UNIT
Output 1 1 14 Output 4
Inverting Input 1 2 - - 13 Inverting Input 4
Non-inverting Input 1 3 + + 12 Non-inverting Input 4
VCC + 4 11 VCC -
Non-inverting Input 2 5 + + 10 Non-inverting Input 3
Inverting Input 2 6 - - 9 Inverting Input 3
Output 2 7 8 Output 3
NJM4558D (U101) AMP P.W.B. UNIT
4
DSW-76 Section SYS-76HT
DSW-76 PRINTED WIRING BOARDS (1/2)
AMP P.W.B. UNIT
5
DSW-76 Section SYS-76HT
DSW-76 PRINTED WIRING BOARDS (2/2)
PRE-AMP P.W.B. UNIT
POWER P.W.B. UNIT
6
DSW-76 Section SYS-76HT
NOTE FOR PARTS LIST
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