Denon AVR-S740H Service Manual

Operation waveform for each part
A B C
A B C
SMPS unit
(Unloaded)
Set
6. SMPS
Is [IC601 : TOP268VG] damaged?
Is [D6001/ D6002 / D6003 /
D6004] damaged?
Repair the short circuited area
on the PCB.
Check the damaged parts.
Replace the damaged part.
Replace the damaged part.
Is the fuse [F6001] functioning
properly?
Are there any short circuits
caused by the soldering on the
PCB?
Are any parts damaged?
Replace the [IC601 : TOP268VG
and D6001/ D6002 / D6003 /
D6004].
DC 5V is not output.
NO
NO
NO
YES
YES
YES
YES
YES
YES
*O PT IO N
*O PT IO N
E3,K :100U F/200V E1C,E2 :100U F/400V
*O PT IO N
*OPTION
*OPTION
VXC F D
S
S S S S S
**OPTION
R6004 330K
C6005
OP EN
C6006 O PEN
C6007 50V/ 0. 1u F
C6009
50V/ 0. 22uF
R6006
1M (1608)
D6006 1N 4007
D6005 1N 4007
D6001 1N 4007
D6002 1N 4007
D6003 1N 4007
D6004 1N 4007
CX 602
OP EN
R6013
22K( 1608)
R6014
1K (1608)
R6012
270K
R6010
1M (0 .2W )
R6008
2.2 M(0 .2 W )
ZD 608
Z39V
ZD 609
Z39V
ZD 610
Z39V
R6009
2.2 M(0 .2 W )
ZD 617
Z22V
ZD 616
Z22V
ZD 615
Z22V
ZD 614
Z22V
ZD 613
Z22V
ZD 612
Z22V
ZD 611
Z22V
C6011
1K V /1000p F ( SM D)
R6015
6.8 (0.2 W )
C6013
47/25V (N X A)
R6011
10(1608)
D6012
1N 4007
ZD 620
Z39V
C6012
0.1 uF(1608)
D6007
1N 4007
ZD 618
Z27V
C6008
50V/ 10UF (N X A)
C6014 0 .1uF (1608)
C6015
4.7 uF(1608)
C6017
100/50V
C6018 5600u F/6 .3V( NX A)
C6019 5600u F/6 .3V( NX A)
C6023
400V/ 2200pF
C6024 0.1 uF( 1608)
R6017
3.3 K(0 .2 W )
R6016
56(0 .2 W )
CA TH OD E
RE F
AN OD E
3
2
1
IC603 K IA 2431AP
R6018
5.6 K(0 .2 W ) C6020
0.1 uF(1608)
R6019
22K/ F( 1608)
R6020
OP EN ( 1608)
R6021
OP EN ( 0.2 W)
D6010 OP EN
R6022
6.8 K/F
C6010
OP EN
ZD 619
Z6 .8 V
C6002 250V/ 0 .01uF
C6003
250V/ 0. 01uF
R6026
OP EN ( 1608)
C6025 OP EN (1608)
R6023
OP EN
C6004
200V/ 100uF
R6031
1M (2125)
R6032
1M (2125)
R6033
1M (2125)
12
3 4
IC602
EL 817-B
ZD 621
Z7 .5 V
J6002
JU MP ER
J6003
JU MP ER
1
2
3
D6013
RB Q30T 65A
C6026
1K V /47p F
C6027
OP EN
C6028
OP EN
R6034
OP EN
121 1 9
10 8
7
6
4 3 2 1
IC601
CV IT O P268V G
J6001
OP EN
C6029
1 5
4
2
OUT
CD
GN D VD D
NC
3
IC604
CV IP ST 8448NR_A
C6030
15N( 1608)
ZD 601
Z12V
1
2
3
4
5
6
7
8
9
10
11
12
13
14
T6001
VL T 9Z 132ZW
BK 603
CMD 1A629
BRA CKE T
S
G
D
Q6002
2N 7002K A
D6008
UF 4004
A B C
After primary side rectification
(Caution: High voltage, electric shock)
Primary drain
(Caution: High voltage, electric shock)
After secondary rectifications
Before Servicing
This Unit
Electrical Mechanical Repair Information Updating
80

Denon AVR-S740H Specifications

General

Brand	Denon
Model	AVR-S740H
Category	Stereo Receiver
Language	English