Disassembly For Repair - Kenwood KRF-V7773D Service Manual

KRF-V7773D/V7773D-B/V9993D
HOW TO REMOVE THE FRONT PANEL AND THE MOTOR.
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).
HOW TO REPLACE THE POWER TRANSISTOR.
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.
1
4

DISASSEMBLY FOR REPAIR

CN2
X07
(C/7)
x70
MOTOR
7
x5
4
4
x5
X25
(G/8)
H/P
PCB
5
X25
(C/9)
X05-5130-11
4
7
7
7
x2
6
6
8
x9
9
X07
CN12
X07-3150-10
(A/5)
11
10
10
10
10
CN14
CN6
X25
(B/9)
10
x3
2
AC CONNECTOR
X07,CN1
1
1
1
X13
CN7
CN8
X11
CN301
(A/4)
6 HOOK
x2
5
x5
5
X13
(C/5)
CN21
3
x2
3 x2
2
2
2
2
2
2
2
10
X11
(C/4)
3