JVC CD Receiver KD-G417 User manual

SERVICE MANUAL
COPYRIGHT © 2005 Victor Company of Japan, Limited No.MA202
2005/7
CD RECEIVER
MA20220057
KD-G417
Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade)
TABLE OF CONTENTS
1 PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-25
5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-26
Area suffix
EE -------- Russian Federation

1-2 (No.MA202)
SPECIFICATION
Design and specifications are subject to change without notice.
AUDIO AMPLIFIER SECTION
Maximum Power Output Front 50 W per channel
Rear 50 W per channel
Continuous Power Output (RMS) Front 19 W per channel into 4 Ω, 40 Hz to 20 000 Hz at no more
than 0.8% total harmonic distortion.
Rear 19 W per channel into 4 Ω, 40 Hz to 20 000 Hz at no more
than 0.8% total harmonic distortion.
Load Impedance 4 Ω(4 Ωto 8 Ωallowance)
Tone Control Range Bass ±10 dB at 100 Hz
Treble ±10 dB at 10 kHz
Frequency Response 40 Hz to 20 000 Hz
Signal-to-Noise Ratio 70 dB
Line-Out Level/Impedance 2.5 V/20 kΩload (full scale)
Output Impedance 1 kΩ
TUNER SECTION
Frequency Range FM1/FM2 87.5 MHz to 108.0 MHz
FM3 65.00 MHz to 74.00 MHz
AM (MW) 522 kHz to 1 620 kHz
(LW) 144 kHz to 279 kHz
FM Tuner Usable Sensitivity 11.3 dBf (1.0 µV/75 Ω)
50 dB Quieting Sensitivity 16.3 dBf (1.8 µV/75 Ω)
Alternate Channel Selectivity (400 kHz) 65 dB
Frequency Response 40 Hz to 15 000 Hz
Stereo Separation 30 dB
Capture Ratio 1.5 dB
MW Tuner Sensitivity 20 µV
Selectivity 35 dB
LW Tuner Sensitivity 50 µV
CD PLAYER SECTION
Type Compact disc player
Signal Detection System Non-contact optical pickup (semiconductor laser)
Number of Channels 2 channels (stereo)
Frequency Response 5 Hz to 20 000 Hz
Dynamic Range 96 dB
Signal-to-Noise Ratio 98 dB
Wow and Flutter Less than measurable limit
MP3 Decoding Format MPEG1/2 Audio Layer 3
Max. Bit Rate: 320 kbps
WMA (Windows Media Audio) Decoding Format Max. Bit Rate: 192 kbps
GENERAL
Power Requirement Operating Voltage DC 14.4 V (11 V to 16 V allowance)
Grounding System Negative ground
Allowable Operating Temperature 0°C to +40°C
Dimensions (W ×H ×D) Installation Size (approx.) 182 mm ×52 mm ×150 mm
Panel Size (approx.) 188 mm ×58 mm ×11 mm
Mass (approx.) 1.3 kg (excluding accessories)

(No.MA202)1-7
SECTION 3
DISASSEMBLY
3.1 Main body section
3.1.1 Removing the front panel assembly
(See Fig.1)
(1) Push the detach button in the lower right part of the front
panel assembly and remove the front panel assembly.
Fig.1
3.1.2 Removing the bottom cover
(See Fig.2)
(1) Turn the main body up side 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.
Note:
When releasing the joints using a screwdriver, do not damage
the main board.
Fig.2
3.1.3 Removing the front chassis assembly
(See Fig.3)
• Remove the front panel assembly and bottom cover.
(1) Remove the two screws 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 assembly
toward the front.
Fig.3
Front panel assembly
Detach button
Bottom cover
Joint b
Joint b
Joint c
Joint a
Joint a
Joint d
Front chassis assembly
A
Joint e
Joint d Joint e

1-8 (No.MA202)
3.1.4 Removing the side panel
(See Fig.4)
Reference:
Remove the front panel assembly as required.
(1) Remove the screw Band two screws Cattaching the side
panel on the left side of the main body.
(2) Remove the side panel from the main body.
Fig.4
3.1.5 Removing the rear bracket
(See Fig.5)
• Remove the bottom cover.
(1) Remove the three screws D, one screw Eand two screws
Fattaching the rear bracket on the back side of the main
body.
(2) Remove the rear bracket.
3.1.6 Removing the main board
(See Figs.5 and 6)
• Remove the front panel assembly, bottom cover and side pan-
el.
Reference:
Remove the front chassis assembly as required.
(1) Remove the three screws Dattaching the rear bracket on
the back side of the main body. (See Fig.5.)
(2) Remove the two screws Gattaching the main board. (See
Fig.6.)
(3) Disconnect the connector CN501 on the main board from
the main body and take out the main board with the rear
bracket. (See Fig.6.)
Reference:
Remove the rear bracket from the main body as required. (See
"3.1.5 Removing the rear bracket".)
Fig.5
Fig.6
Side panel
CBC
DD
E
Rear bracket FF
Main board
G
G
CN501
Rear bracket

(No.MA202)1-9
3.1.7 Removing the CD mechanism assembly
(See Fig. 7)
• Remove the front panel assembly, bottom cover, side panel,
rear bracket and main board.
Reference:
Remove the front chassis assembly as required.
(1) Remove the three screws Hattaching the CD mechanism
assembly on the top chassis.
(2) Take out the CD mechanism assembly.
Fig.7
3.1.8 Removing the switch board
(See Figs.8 to 10)
• Remove the front panel assembly.
(1) Remove the five screws Jon the back side of the front pan-
el assembly. (See Fig.8.)
(2) Release the twelve joints fand remove the rear cover. (See
Fig.9.)
(3) Release the joint gand take out the switch board from the
front panel assembly. (See Fig.10.)
Note:
When removing the rear cover assembly and switch board, be
careful not to lose the spring.
Fig.8
Fig.9
Fig.10
H
H
CD mechanism assembly Top chassis
J
J
J
Joints f
Joints f
Joints fJoints f
Rear cover
Switch board Joint g
Front panel assembly

1-10 (No.MA202)
3.2 CD Mechanism Assembly
3.2.1 Removing the top cover
(See Figs.1 and 2)
(1) Remove the two screws Aon the both side of the body.
(2) Lift the front side of the top cover and move the top cover
backward to release the two joints a.
Fig.1
Fig.2
A
A
A
Joints a
Top cover
Joints a
Top cover

(No.MA202)1-11
3.2.2 Removing the connector board
(See Figs.3 to 5)
CAUTION:
Before disconnecting the flexible wire from the pickup, solder
the short-circuit point on the pickup. No observance of this in-
struction may cause damage of the pickup.
(1) Remove the screw Bfixing the connector board.
(2) Solder the short-circuit point on the connector board.
(3) Disconnect the flexible wire from the pickup.
(4) Move the connector board in the direction of the arrow to
release the two joints b.
(5) Unsolder the wire on the connector board if necessary.
CAUTION:
Unsolder the short-circuit point after reassembling.
Fig.3
Fig.4
Fig.5
B
Connector board
Pickup
Short-circuit point
Joints b
Wires
Pickup
Short-circuit point
(Soldering)
Flexible wire
B
Flexible wire
Connector board
Frame

1-12 (No.MA202)
3.2.3 Removing the DET switch
(See Figs.6 and 7)
(1) Extend the two tabs cof the feed sw. holder and pull out
the switch.
(2) Unsolder the DET switch wire if necessary.
Fig.6
Fig.7
Connector
board
DET switch
Pickup
DET switch Tab c
Tab c
DET switch wire
Feed sw. holder

(No.MA202)1-13
3.2.4 Removing the chassis unit
(See Figs.8 and 9)
• Prior to performing the following procedure, remove the top
cover and connector board.
(1) Remove the two suspension springs (L) and (R) attaching
the chassis unit to the frame.
CAUTION:
• The shape of the suspension spring (L) and (R) are dif-
ferent. Handle them with care.
• When reassembling, make sure that the three shafts
on the underside of the chassis unit are inserted to the
dampers certainly.
Fig.8
Fig.9
Suspension spring (L)
Suspension spring (L)
Suspension spring (R)
Suspension spring (R)
Chassis unit
Frame
Chassis unit
Frame
Shafts
Shaft
Dampe
r
Damper
Damper

1-14 (No.MA202)
3.2.5 Removing the clamper assembly
(See Figs.10 and 11)
• Prior to performing the following procedure, remove the top
cover.
(1) Remove the clamper arm spring.
(2) Move the clamper assembly in the direction of the arrow to
release the two joints d.
Fig.10
Fig.11
Clamper arm
spring
Chassis rivet
assembly
Joint d
Joint d Clamper assembly
Clamper arm spring
Clamper
assembly
Joint d
Joint d
Chassis rivet assembly

(No.MA202)1-15
3.2.6 Removing the loading / feed motor assembly
(See Figs.12 and 13)
• Prior to performing the following procedure, remove the top
cover, connector board and chassis unit.
(1) Remove the screw Cand move the loading / feed motor
assembly in the direction of the arrow to remove it from the
chassis rivet assembly.
(2) Disconnect the wire from the loading / feed motor assembly
if necessary.
CAUTION:
When reassembling, connect the wire from the loading /
feed motor assembly to the flame as shown in Fig.12.
Fig.12
Fig.13
Loading / feed motor assembly
Loading / feed motor assembly
C

1-16 (No.MA202)
3.2.7 Removing the pickup unit
(See Figs.14 to 18)
• Prior to performing the following procedure, remove the top
cover, connector board and chassis unit.
(1) Remove the screw Dand pull out the pu. shaft holder from
the pu. shaft.
(2) Remove the screw Eattaching the feed sw. holder.
(3) Move the part eof the pickup unit upward with the pu. shaft
and the feed sw. holder, then release the joint f of the feed
sw. holder in the direction of the arrow. The joint gof the
pickup unit and the feed rack is released, and the feed sw.
holder comes off.
(4) Remove the pu. shaft from the pickup unit.
(5) Remove the screw Fattaching the feed rack to the pickup
unit.
3.2.8 Reattaching the pickup unit
(See Figs.14 to 17)
(1) Reattach the feed rack to the pickup unit using the screw F.
(2) Reattach the feed sw. holder to the feed rack while setting
the joint g to the slot of the feed rack and setting the part f
of the feed rack to the switch of the feed sw. holder correct-
ly.
(3) As the feed sw. holder is temporarily attached to the pickup
unit, set to the gear of the joint g and to the bending part of
the chassis (joint h) at a time.
CAUTION:
Make sure that the part i on the underside of the feed
rack is certainly inserted to the slot j of the change lock
lever.
(4) Reattach the feed sw. holder using the screw E.
(5) Reattach the pu. shaft to the pickup unit. Reattach the pu.
shaft holder to the pu. shaft using the screw D.
Fig.14
Fig.15
Fig.16
Fig.17
Fig.18
Feed sw. holder
E
D
Joint g
Joint f
Part e
Pickup unit
Pu. shaft holder
Pu. shaft
Feed sw. holder
Part e
Pickup unit
Feed rack
Feed sw.
holder
D
E
Joint f
Pu. shaft
holder
Pu. shaft
Pickup unit
Joint h
Part i
Slot j
Joint g
FFeed rack
Pickup unit
Joint f
Joint g
Feed rack
Pickup unit
Feed sw. holder

(No.MA202)1-17
3.2.9 Removing the trigger arm
(See Figs.19 and 20)
• Prior to performing the following procedure, remove the top
cover, connector board and clamper unit.
(1) Turn the trigger arm in the direction of the arrow to release
the joint kand pull out upward.
CAUTION:
When reassembling, insert the part m and n of the trigger
arm into the part pand qat the slot of the chassis rivet
assembly respectively and join the joint k at a time.
Fig.19
Fig.20
3.2.10 Removing the top plate assembly
(See Fig.21)
• Prior to performing the following procedure, remove the top
cover, connector board, chassis unit, and clamper assembly.
(1) Remove the screw H.
(2) Move the top plate assembly in the direction of the arrow to
release the two joints r.
(3) Unsolder the wire marked s if necessary.
Fig.21
Joint k
Trigger arm
Chassis rivet assembly
Trigger arm
Chassis rivet
assembly
Part p
Part m
Part n
Part q
Top plate assembly
Joints
r
s
H

1-18 (No.MA202)
3.2.11 Removing the mode sw. / select lock arm
(See Figs.22 and 23)
• Prior to performing the following procedure, remove the top
plate assembly.
(1) Bring up the mode sw. to release from the link plate (joint t)
and turn in the direction of the arrow to release the joint u.
(2) Unsolder the wire of the mode sw. marked s if necessary.
(3) Turn the select lock arm in the direction of the arrow to re-
lease the two joints v.
(4) The select lock arm spring comes off the select lock arm at
the same time.
Fig.22
Fig.23
Mode sw.
Select lock arm
Joint t
Link plate
Joint u s
Top plate
Top plate
Select lock arm
Select lock
arm spring
Select lock arm
Link plate
Joints v
Hook w

(No.MA202)1-19
3.2.12 Reassembling the mode sw. / select lock arm
(See Figs.24 to 26)
REFERENCE:
Reverse the above removing procedure.
(1) Reattach the select lock arm spring to the top plate and set
the shorter end of the select lock arm spring to the hook w
on the top plate.
(2) Set the other longer end of the select lock arm spring to the
boss x on the underside of the select lock arm, and join the
select lock arm to the slots (joint v). Turn the select lock
arm as shown in the figure.
(3) Reattach the mode sw. while setting the part t to the first
peak of the link plate gear, and join the joint u.
CAUTION:
When reattaching the mode sw., check if the points y and
z are correctly fitted and if each part operates properly.
Fig.24
Fig.25
Fig.26
Select lock arm
Hook w
Boss x
Select lock arm spring
Joint v
Joint v
Link plate
Joint t
Point z
Point y
Select
lock arm
Mode sw.
Joint t
Joint u
Link plate

1-20 (No.MA202)
3.2.13 Removing the select arm R / link plate
(See Figs.27 and 28)
• Prior to performing the following procedure, remove the top
plate assembly.
(1) Bring up the select arm R to release from the link plate
(joint a') and turn as shown in the figure to release the two
joints b' and joint c'.
(2) Move the link plate in the direction of the arrow to release
the joint d'. Remove the link plate spring at the same time.
REFERENCE:
Before removing the link plate, remove the mode sw..
Fig.27
Fig.28
3.2.14 Reattaching the Select arm R / link plate
(See Figs.29 and 30)
REFERENCE:
Reverse the above removing procedure.
(1) Reattach the link plate spring.
(2) Reattach the link plate to the link plate spring while joining
them at joint d'.
(3) Reattach the joint a' of the select arm Rto the first peak of
the link plate while joining the two joints b' with the slots.
Then turn the select arm R as shown in the figure. The top
plate is joined to the joint c'.
CAUTION:
When reattaching the select arm R, check if the points e'
and f' are correctly fitted and if each part operates prop-
erly.
Fig.29
Fig.30
Joint r
Link plate
Joint b'
Joint b'
Joint c'
Select arm R
Joint a'
Top plate
Link plate
Link plate spring
Joint d'
Select arm R Joint c'
Joint d'
Link plate spring
Joint b'
Joint b' Joint a'
Link plate
Joint a'
Point e' Point f'

(No.MA202)1-21
3.2.15 Removing the loading roller assembly
(See Figs.31 to 33)
• Prior to performing the following procedure, remove the
clamper assembly and top plate assembly.
(1) Push inward the loading roller assembly on the gear side
and detach it upward from the slot of the joint g' of the lock
arm rivet assembly.
(2) Detach the loading roller assembly from the slot of the joint
h' of the lock arm rivet assembly.
The roller guide comes off the gear section of the loading
roller assembly.
Remove the roller guide and the HL washer from the shaft
of the loading roller assembly.
(3) Remove the screw Jattaching the lock arm rivet assembly.
(4) Push the shaft at the joint i' of the lock arm rivet assembly
inward to release the lock arm rivet assembly from the slot
of the Lside plate.
(5) Extend the lock arm rivet assembly outward and release
the joint j' from the boss of the chassis rivet assembly. The
roller guide springs on both sides come off at the same
time.
CAUTION:
When reassembling, reattach the left and right roller
guide springs to the lock arm rivet assembly before reat-
taching the lock arm rivet assembly to the chassis rivet
assembly. Make sure to fit the part k' of the roller guide
spring inside of the roller guide. (Refer to Fig.34.)
Fig.31
Fig.32
Fig.33
Fig.34
Roller guide
Roller guide spring
Roller guide spring
Roller guide spring
Roller guide
HL washer
Loading roller assembly
Loading roller assembly
Joint h'
Joint g'
Lock arm rivet assembly
Roller guide
spring
Roller guide
spring
Loading roller assembly
Loading roller assembly
Part k'
Roller guide spring
Boss
L side plate
Joint i'
Part j'
Lock arm rivet assembly
J
Chassis rivet assembly
Roller guide
HL washer
Lock arm rivet assembly Roller guide spring
Loading roller
Roller shaft assembly

1-22 (No.MA202)
3.2.16 Removing the loading gear 5, 6 and 7
(See Figs.35 and 36)
• Prior to performing the following procedure, remove the top
cover, chassis unit, pickup unit and top plate assembly.
(1) Remove the screw Kattaching the loading gear bracket.
The loading gear 6 and 7 come off the loading gear brack-
et.
(2) Pull out the loading gear 5.
Fig.35
Fig.36
KLoading gear bracket
Loading gear 6
Loading gear 5
Loading gear 3
K
Loading gear bracket
Loading gear 6
Loading gear 5 Loading gear 7

(No.MA202)1-23
3.2.17 Removing the gears
(See Figs.37 to 40)
• Prior to performing the following procedure, remove the top
cover, chassis unit, top plate assembly and pickup unit.
• Pull out the loading gear 3. (See Fig.35.)
(1) Pull out the feed gear.
(2) Move the loading plate assembly in the direction of the ar-
row to release the L side plate from the two slots m' of the
chassis rivet assembly. (See Fig.37.)
(3) Detach the loading plate assembly upward from the chas-
sis rivet assembly while releasing the joint n'. Remove the
slide hook and loading plate spring from the loading plate
assembly.
(4) Pull out the loading gear 2 and remove the change lock le-
ver.
(5) Remove the E ring and washer attaching the changer gear
2.
(6) The changer gear 2, change gear spring and adjusting
washer come off.
(7) Remove the loading gear 1.
(8) Move the change plate rivet assembly in the direction of the
arrow to release from the three shafts of the chassis rivet
assembly upward. (See Fig.38.)
(9) Detach the loading gear plate rivet assembly from the shaft
of the chassis rivet assembly upward while releasing the
joint p'. (See Figs.38 and 40.)
(10) Pull out the loading gear 4.
Fig.37
Fig.38
Fig.39
Fig.40
Slot m'
Slot m'
Joint n'
Feed gear
Loading plate assembly
L side plate
Chassis rivet assembly
Joint p'
Loading gear 4
Loading gear 2
Loading gear 1
Change gear 2
Loading gear plate
rivet assembly
E ring
Shafts
Change plate
rivet assembly
Shaft
Chassis rivet assembly
Loading plate assembly
Loading plate spring
Chassis rivet assembly
Slot m'
Slot m'
Joint n'
L side plate
Slide hook
Loading gear 2
Loading gear 4
Change gear 2
Loading gear 1
E ring
Washer
Change gear spring
Loading gear plate rivet assembly
Chassis rivet assembly
Adjusting washer
Change plate
rivet assembly
Change lock lever

1-24 (No.MA202)
3.2.18 Removing the turn table / spindle motor
(See Figs.41 and 42)
• Prior to performing the following procedure, remove the top
cover, connector board, chassis unit and clamper assembly.
(1) Remove the two screws Lattaching the spindle motor as-
sembly through the slot of the turn table on top of the body.
(2) Unsolder the wire on the connector board if necessary.
Fig.41
Fig.42
L
Turn table
L
Turn table
Spindle motor