JVC KS-F545 User manual

SERVICE MANUAL
COPYRIGHT © 2003 VICTOR COMPANY OF JAPAN, LTD. No.49828
2003/4
KS-F545
CASSETTE RECEIVER
4982820034
KS-F545
TABLE OF CONTENTS
1 Important Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
2 Disassembly method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
3 Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-18
4 Description of major ICs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-22
MODE SCM
MO RPT
Area Suffix
EE ------- Russian Federation

KS-F545
1-2 (No.49828)
SECTION 1
Important Safety Precautions
1.1 Safety Precautions
!Burrs formed during molding may be left over on some parts of the chassis. Therefore,
pay attention to such burrs in the case of preforming repair of this system.

KS-F545
(No.49828)1-3
SECTION 2
Disassembly method
2.1 Main body
2.1.1 Removing the front panel assembly
(See Fig.1)
(1) Press the release button and remove the front panel as-
sembly.
Fig.1
2.1.2 Removing the bottom cover
(See Fig.2)
(1) Turn the main body upside down.
(2) Insert a screwdriver under the joints to release the two
joints aon the left side, two joints bon the right side and
joint con the back side of the main body, then remove the
bottom cover from the main body.
CAUTION:
When releasing the joints using a screwdriver, do not damage
the main board.
Fig.2
2.1.3 Removing the front chassis
(See Fig.3)
• Prior to performing the following procedures, remove the front
panel assembly and bottom cover.
(1) Remove the screw Aon the both sides of the main body.
(2) Release the two joints dand two joints eon the both sides
of the main body, then remove the front chassis toward the
front.
Fig.3
Front panel assembly
Release button
Bottom cover
Joint b
Joint b
Joint c
Joint a
Joint a
Joint dJoint e
Front chassis
Joint d
A
Joint e

KS-F545
1-4 (No.49828)
2.1.4 Removing the heat sink
(See Fig.4)
• Prior to performing the following procedure, remove the front
panel assembly.
(1) Remove the two screws Band two screws Cattaching the
heat sink on the left side of the main body, and remove the
heat sink.
Fig.4
2.1.5 Removing the rear panel
(See Fig.5)
• Prior to performing the following procedure, remove the front
panel assembly and bottom cover.
(1) Remove the two screws D, two screws Eand screw Fat-
taching the rear panel on the back side of the main body.
Fig.5
2.1.6 Removing the main board
(See Fig.6)
• Prior to performing the following procedures, remove the front
panel assembly, bottom cover, front chassis, heat sink and
rear panel.
(1) Remove the two screws Gattaching the main board on the
top chassis.
(2) Disconnect the connectors CP401 on the main board from
the cassette mechanism assembly.
Fig.6
Heat sink
CB C
DD
EF
E
Rear panel
GG
Main board
CP401
Top chassis

KS-F545
(No.49828)1-5
2.1.7 Removing the cassette mechanism assembly
(See Fig.7)
• Prior to performing the following procedures, remove the front
panel assembly, bottom cover, front chassis, heat sink, rear
panel and main board.
(1) Disconnect the wire from the connector CN402 on the
mecha board.
(2) Disconnect the card wire from the connector CN403 on the
mecha board.
(3) Remove the four screws Hattaching the cassette mecha-
nism assembly from the top chassis.
Fig.7
2.1.8 Removing the mecha board
(See Fig.8)
• Prior to performing the following procedures, remove the front
panel assembly, bottom cover, front chassis, heat sink, rear
panel and main board.
(1) Disconnect the wire from the connector CN402 on the
mecha board.
(2) Disconnect the card wire from the connector CN403 on the
mecha board.
(3) Remove the screw Jattaching the mecha board.
(4) Bend the hook f in the direction of the arrow 1 and move the
mecha board in the direction of the arrow 2.
(5) Remove the mecha board from the mecha bracket (L) of
the top chassis. Fig.8
HH
Top chassis
Cassette mechanism assembly
CN403 CN402
Mecha board
J
Mecha board Hook f
Top chassis
Mecha bracket (L)
CN402
CN403
1
2

KS-F545
1-6 (No.49828)
2.1.9 Removing the front board
(See Fig.9 to 11)
• Prior to performing the following procedures, remove the front
panel assembly.
(1) Remove the four screws Kattaching the rear cover on the
back side of the front panel assembly. (See Fig.9.)
(2) Release the eleven joints g, the front panel assembly and
the rear cover become separate. (See Fig.10.)
(3) Remove the front board from the front panel assembly.
(See Fig.11.)
Fig.9
Fig.10
Fig.11
K K
K
KRear cover
Joints g
Joints g
Joints g
Joints g
Front board
Front panel assembly

KS-F545
(No.49828)1-7
2.2 Cassette mechanism assembly
REFERENCE:
Prior to performing the following procedures, turn the mode
gear on the bottom of the body until the respective part comes
to the EJECT position (Refer to Fig.1).
Fig.1
2.2.1 Removing the cassette guide
(See Fig.2)
(1) Turn the mode gear to set to RVS play or subsequent
mode.
(2) Remove the cassette guide from the main chassis while re-
leasing each two joint tabs ain the direction of the arrow.
Fig.2
2.2.2 Removing the load arm
(See Fig.3)
(1) Remove the E-washer attaching the load arm.
(2) Move the load arm in the direction of the arrow and release
the joint bon the cassette catch.
Fig.3
Mode gea
r
Cassette guide
Tab a
Tab a
Load arm
E-washer
Joint b

KS-F545
1-8 (No.49828)
2.2.3 Removing the cassette hanger assembly / cassette holder
(See Fig.4 to 7)
(1) Check the mode is set to EJECT. Push down the front part
of the cassette holder and move in the direction of the ar-
row to release the joint c.
(2) Move the rear part of the cassette hanger assembly in the
direction of the arrow to release it from the two joint bosses
d.
(3) Release the holder stabilizer spring from the hooks eand
f, then pull out from the cassette hanger assembly.
(4) Bring up the rear side of the cassette hanger assembly to
release the joint gand h.
(5) Pull out the cassette catch from the cassette hanger as-
sembly.
Fig.4
Fig.5
Fig.6
Fig.7
Cassette holder assembly
Side bracket
Joints c
Cassette holder assembly
Cassette hanger
assembly
Boss d
Boss d
Cassette hange
r
assembly
Cassette stabilizer spring
Hook f
Hook e
Cassette hanger
assembly
Hook h
Hook g
Cassette holder
assembly
Cassette holder assembly
Cassette hanger assembly
Cassette catch

KS-F545
(No.49828)1-9
2.2.4 Removing the side bracket assembly
(See Fig.8 to 10)
(1) Remove the screw Aattaching the side bracket assembly.
(2) Detach the front side of the side bracket assembly upward
and pull out forward to release the joint i and j in the rear.
CAUTION:
When reassembling, make sure that the boss kof the
main chassis is set in the notch of the load rack under the
side bracket assembly. Do not reattach the load rack on
the boss k.
CAUTION:
After reattaching the side bracket assembly, confirm op-
eration.
Fig.8
Fig.9
Fig.10
A
Side bracket assembly
Side bracket assembly
Joint i
Joint j
Joint i
Joint j
Side bracket assembly
Boss k
Load rack
Boss k
Load rack

KS-F545
1-10 (No.49828)
2.2.5 Removing the pinch arm (F) assembly
(See Fig.11 and 12)
(1) Remove the polywasher and pull out the pinch arm (F) as-
sembly.
(2) Remove the compulsion spring.
2.2.6 Removing the pinch arm (R) assembly
(See Fig.11 and 12)
(1) Remove the polywasher and pull out the pinch arm (R) as-
sembly.
2.2.7 Removing the slide chassis assembly
(See Fig.13 and 14)
REFERENCE:
It is not necessary to remove the head and the tape guide.
(1) Move the slide chassis assembly in the direction of the ar-
row to release the two joints land remove from the main
chassis.
(2) Remove the rack link.
CAUTION:
When reassembling, first reattach the rack link, and next
fit the boss mand hook nof the slide chassis assembly
to the hole of the main chassis, and engage the two joints
l.
Fig.11
Fig.12
Fig.13
Fig.14
Polywashe
r
Polywasher Pinch arm
(F) assembly
Pinch arm
(R) assembly
Polywasher
Pinch arm (F) assembly
Compulsion
spring
Pinch arm
(R) assembly Polywasher
Slide chassis assembly
Joint l
Joint l
Boss m
Hook n
Rack link
Head
Tape guide