Kenwood VR-4900 User Manual

KRF-V7773D/V7773D-B/V9993D
4
DISASSEMBLY FOR REPAIR
1 x70
X07
(C/7)
CN2
X25
(C/9)
X05-5130-11
X07
X13
(C/5)
CN12
CN21
4
5
7
7
8
3
3
2
2
2
2
2
2
9
6
6
7
x9
x2
2
x2
x2
X07-3150-10
(A/5)
X25
(B/9)
X11
(C/4)
10 x3
10
10
11
10
10
10
CN14
CN6
x2
x5
x5
7
4
4
1
1
1
3
2
6
x5
5
5
HOOK
X11
(A/4)
CN301
CN7
CN8
X13
X07,CN1
MOTOR
AC CONNECTOR
H/P
PCB
X25
(G/8)
1. Take out the connectors (1) {X07,CN1/X13(CN7,CN8)} and
the AC connetor(2).
2. Take the lead (3) out of CN301 on X11(A/4) PCB.
3. Take out the screws (4) and (5).
4. The front panel can be separated by removing 2 hooks (6)
on the sub panel.
5. To separate the motor from the front panel, remove the
screws (7).
1. The rear panel can be separated by removing screws (1)
on the rear panel.
2. Take the AC connector out of CN2 on the X07(C/7).
3. To separate the chassis from bottom chassis, remove the
screws (2).
4. Remove CN21 and screws (3) on X13(C/5).
5. Remove screws (4 to 7).
6. The fan motor can be separated by removing screws (8)
and the connector (CN12) on X07 PCB.
7. Take the PCB
X25(B/9), X11(C/4)} out of X07.
8. To separate the main PCB (X07) from the bottom chassis,
remove screws (0).
9. Set up the PCB as figure (-).
10. Replace the defective transistors.
HOW TO REPLACE THE POWER TRANSISTOR.
HOW TO REMOVE THE FRONT PANEL AND THE MOTOR.

Kenwood VR-4900 Specifications

General

Brand	Kenwood
Model	VR-4900
Category	Receiver
Language	English