Yamaha CDX-E400 User manual
100808
SERVICE MANUAL
CDX-E400
IMPORTANT NOTICE
This manual has been provided for the use of authorized YAMAHA Retailers and their service personnel.
It has been assumed that basic service procedures inherant to the industry, and more specifically YAMAHA Products, are already
known and understood by the users, and have therefore not been restated.
WARNING: Failure to follow appropriate service and safety procedures when servicing this product may result in personal
injury, destruction of expensive components and failure of the product to perform as specified. For these reasons,
we advise all YAMAHA product owners that all service required should be performed by an authorized
YAMAHA Retailer or the appointed service representative.
IMPORTANT: The presentation or sale of this manual to any individual or firm does not constitute authorization, certification or
recognition of any applicable technical capabilities, or establish a principle-agent relationship of any form.
The data provided is believed to be accurate and applicable to the unit(s) indicated on the cover. The research, engineering, and
service departments of YAMAHA are continually striving to improve YAMAHA products. Modifications are, therefore, inevitable
and specifications are subject to change without notice or obligation to retrofit. Should any discrepancy appear to exist, please contact
the distributor's Service Division.
WARNING: Static discharges can destroy expensive components. Discharge any static electricity your body may have accumu-
lated by grounding yourself to the ground buss in the unit (heavy gauge black wires connect to this buss).
IMPORTANT: Turn the unit OFF during disassembly and parts replacement. Recheck all work before you apply power to the unit.
IC DATA ................................................................ 15–19
DISPLAY DATA .......................................................... 20
BLOCK DIAGRAM...................................................... 21
PRINTED CIRCUIT BOARD ................................ 22–23
IC BLOCK ................................................................... 24
PIN CONNECTION DIAGRAM................................... 24
SCHEMATIC DIAGRAM ............................................. 25
PARTS LIST .......................................................... 27–34
PARTS LIST FOR CARBON RESISTORS ............... 35
■ CONTENTS
TO SERVICE PERSONNEL ..................................... 2–3
PREVENTION OF ELECTRO STATIC DISCHARGE
..... 4
REAR PANELS ............................................................. 4
SPECIFICATIONS......................................................... 5
INTERNAL VIEW .......................................................... 5
DISASSEMBLY PROCEDURES .............................. 6–8
STANDARD OPERATION CHART ........................ 9–10
TEST MODE .......................................................... 11–12
ERROR MESSAGE............................................... 13–14
The CRX-E400 is composed of the
RX-E400 and the CDX-E400. This
service manual is for the CDX-E400.
For the RX-E400 service manual,
please refer to the following publication
number :
RX-E400 100809
For the system operation, please refer
to the service manual for the RX-E400.
MINI COMPONENT SYSTEM CRX-E400
CDX-E400
CDX-E400
2
CDX-E400
■ TO SERVICE PERSONNEL
1. Critical Components Information
Components having special characteristics are marked Z
and must be replaced with parts having specifications equal
to those originally installed.
2. Leakage Current Measurement (For 120V Models Only)
When service has been completed, it is imperative to verify
that all exposed conductive surfaces are properly insulated
from supply circuits.
●Meter impedance should be equivalent to 1500 ohm shunted
by 0.15µF.
●Leakage current must not exceed 0.5mA.
●Be sure to test for leakage with the AC plug in both
polarities.
AC LEAKAGE
TESTER OR
EQUIVALENT
EQUIPMENT
UNDER TEST
INSULATING
TABLE
WALL
OUTLET
WARNING: CHEMICAL CONTENT NOTICE!
The solder used in the production of this product contains LEAD. In addition, other electrical/electronic and/or
plastic (where applicable) components may also contain traces of chemicals found by the California Health and
Welfare Agency (and possibly other entities) to cause cancer and/or birth defects or other reproductive harm.
DO NOT PLACE SOLDER, ELECTRICAL/ELECTRONIC OR PLASTIC COMPONENTS IN YOUR MOUTH FOR
ANY REASON WHATSOEVER!
Avoid prolonged, unprotected contact between solder and your skin! When soldering, do not inhale solder fumes
or expose eyes to solder/flux vapor!
If you come in contact with solder or components located inside the enclosure of this product, wash your hands
before handling food.
THIS PRODUCT SHOULD NOT BE ADJUSTED OR REPAIRED BY ANYONE EXCEPT PROPERLY QUALIFIED SERVICE
PERSONNEL.
WARNING: Laser Safety
This product contains a laser beam component. This component may emit invisible, as well as visible radiation,
which may cause eye damage. To protect your eyes and skin from laser radiation, the following precautions must
be used during servicing of the unit.
1) When testing and/or repairing any component within the product, keep your eyes and skin more than 30 cm away from
the laser pick-up unit at all times. Do not stare at the laser beam at any time.
2) Do not attempt to readjust, disassemble or repair the laser pick-up, unless noted elsewhere in this manual.
3) CAUTION : Use of controls, adjustments or performance of procedures other than those specified herein may result in
hazardous radiation exposure.
Laser Emitting conditions:
1) When the Top Cover is removed, and the “STANDBY/ON”SW is turned to the "ON" position, the laser component will
emit a beam for several seconds to detect if a disc is present. During this time (5-10 sec.) the laser may radiate through
the lens of the laser pick-up unit. Do not attempt any servicing during this period!
If no disc is detected, the laser will stop emitting the beam. When a disc is set, you will not be exposed to any laser
emissions.
2) The laser power level can be adjusted with the VR on the pick-up PWB. However, this level has been set by the factory
prior to shipping from the factory. Do not adjust this laser level control unless instruction is provided elsewhere in this
manual. Adjustment of this control can increase the laser emission level from the device.
CDX-E400
CDX-E400
3
Laser Diode Properties
●Material : GaAlAs
●Wavelength : 780 nm
●Emission Duration : Continuous
●Laser Output : max. 44.6 µW*
* This output is the value measured at a distance of about
200 mm from the objective lens surface on the Optical
Pick-up Block.
When checking the laser diode emission, keep your eyes more
than 30 cm away from the objective lens.
VARO! : AVATTAESSA JA SUOJALUKITUS OHITETTAESSA OLET ALTTIINA NÄKYMÄTTÖMÄLLE
LASER-SÄTEILYLLE. ÄLÄ KATSO SÄTEESEEN.
VARNING! : OSYNLIG LASERSTRÅLNING NÄR DENNA DEL ÄR ÖPPNAD OCH SPÄRREN ÄR URKOPPLAD.
BETRAKTA EJ STRÅLEN.
Optical Pick-up
CDX-E400
4
CDX-E400
■REAR PANELS
▼ R model
▼ G model
▼ B model
240V
SERIAL LABEL
SERIAL LABEL
■PREVENTION OF ELECTRO STATIC DISCHARGE
The laser diode in the CD mechanism unit (optical pickup) may be damaged due to static electricity from clothes or
the human body. Use caution to prevent electrostatic damage when servicing or handling the laser diode.
1. Grounding for electrostatic damage prevention
1. Worktable grounding
Put a grounded conductive material (sheet) or iron sheet on the area where the optical pickup is placed.
2. Human body grounding
Use an anti-static wrist strap to discharge the static electricity from your body.
2. Handling of the optical pickup
Do not use a tester to check the laser diode in the optical pickup. The power supply in the tester will damage the
laser diode.
3. Handling Precautions for the CD mechanism Unit (Optical Pickup)
1. Handle the CD mechanism unit (optical pickup) gently, as it is an extremely high-precision assembly.
2. The flexible cable lines may break if an excessive force is applied to it. Use caution when handling the cable.
3. The semi-fixed resistor for laser power adjustment should not be adjusted. Do not turn the resistor.
1MΩ
Conductive material
(sheet) or steel sheet
Anti-static wrist strip
CDX-E400
CDX-E400
5
● DIMENSIONS
Unit : mm (inch)
■SPECIFICATIONS
Output Level
1kHz, 0dB 2.0 ±0.5Vrms
Signal to Nosie Ratio (EIAJ) 102dB
Dynamic Range 95dB
Harmonic Distortion+Noise (1kHz) 0.004%
Frequency Response
2Hz —20kHz ±0.5dB
Power Requirements
B, G models 230V AC 50Hz
R model 110/120/220/240V AC 50/60Hz
Power Consumption 10W
Dimensions (W x H x D) 217 x 108 x 346mm
(8-9/16" x 4-1/4" x 13-5/8")
Weight 3.0kg (6 lbs 9 oz)
Finish
Gold color R, G models
Silver color G, B models
*Specifications are subject to change without notice.
B .................... British model
G ............... European model
R .................. General model
qMAIN (3) P.C.B.
wMAIN (4) P.C.B. (R model only)
eMAIN (1) P.C.B.
rCD MECHANISM UNIT
tMAIN (2) P.C.B.
■INTERNAL VIEW
217(8-9/16")
100(3-15/16")
8
(5/16") 108(4-1/4")
335(13-3/16")
346(13-5/8")
q
rt
ew
CDX-E400
6
CDX-E400
■DISASSEMBLY PROCEDURES (Remove parts in disassembly order as numbered.)
1. Removal of Top Cover
a. Remove 4 screws ( q ) and 4 screws
( w
)
in Fig. 1.
b. Lift the Top Cover at the rear and move it rear-ward slantingly.
2. Removal of Front Panel
a. Remove a connector (CB102) in Fig. 2.
b. Remove 2 screws ( e) and 2 screws
( r
)
in Fig. 1.
c.
Remove 2 hooks and then pull the Front Panel forward.
3. Removal of CD Mechanism Unit
a. Remove a connector (CB1) in Fig. 2.
b. Remove W2 and W3 from the CD Mechanism in Fig. 2.
c. Remove 4 screws ( t) in Fig. 1.
d. Remove the CD Mechanism Unit in Fig. 1.
Fig. 2
Fig. 1
e
e
q
q
w
r
Top Cover
CD Mechanism
Unit
Front Panel
w
tt
W2
W3
CB1
CB102
Hook
Hook
CDX-E400
CDX-E400
7
●Servicing Position
a. Remove the Top Cover, Front Panel and CD Mechanism Unit.
b. Remove 3 screws (y) and 2 screws (u) in Fig. 3.
c. Loosen the style pin (PN1) to set W401 free in Fig. 3.
d. With the rear panel attached, remove the Main P.C.B.
e. With the rear panel attached, set the Main P.C.B on its side as shown in Fig. 4.
At this time, fit the cut in the rear panel with the main chassis as shown in Fig. 4.
f. Replace the PU cable of the CD Mechanism with the below specified extension cable.
Extension cable
16P 230 mm: V3340500
g. Install the CD Mechanism to the frame mechanism.
h. Connect CB1 as shown in Fig. 5.
i. Connect W2 and W3 to the CD Mechanism as shown in Fig. 6.
j. Place the front panel on the base as shown in Fig. 6.
Base height: 10cm
k. Connect CB102 as shown in Fig. 6.
l. Connect the power cable, turn on the power and check for operation.
Fig. 3
Fig. 4
Cut
Main P.C.B.
y
Rear Panel
y
u
u
Style Pin (PN1)
W401
Main P.C.B.
Fig. 5
Fig. 6
CB1
Extension cable
W2
W3
CB102
Base
CDX-E400
8
CDX-E400
Disc Table
Pick-up Head Gear A
Sled Shaft
19.4 ±0.2mm
Stopper
Check that the disc table height is as specified below.
Fig. 9
Fig. 7
Fig. 8
Stopper
i
Stopper Pin
o
Sub Chassis (S)
!0
!0
Chucking Unit
Stopper
Hook
Drive Gear
Drive Unit
5. Removal of Pick-up Head
a. Remove 2 screws ( o ) in Fig. 8.
b. Remove a pick-up cable in Fig. 8.
c. Remove 4 screws ( !0 ) and then remove the Drive
Unit in Fig. 8.
d. Remove the gear A in Fig. 9.
e. Pull out the Sled Shaft in Fig. 9.
f. Remove the Pick-up Head.
4. Removal of Tray Unit
a. Remove 2 screws ( i ) and then remove the Chuck-
ing Unit in Fig. 7.
b. Remove 1 hook and then remove the Stopper Pin in
Fig. 7.
c. Rotate the Drive Gear and then open the Tray Unit in
Fig. 7.
d. Detach the Stoppers on both sides and then pull out
the Tray in Fig. 7.
Pick-up Cable
CDX-E400
CDX-E400
9
■STANDARD OPERATION CHART
A
Press OPEN/CLOSE key.
Forced feed return operation
Clamp down operation
Tray open
Tracking offset auto ADJ
Focus offset auto ADJ
Load a disc.
Press PLAY key or push the tray.
Tray closed
Disc mechanism unit clamped up.
Feed inward switch research.
Laser ON
Disc scan
Focus gain rough ADJ
Focus search operation
Focus lock servo ON
Spindle motor accelerated.
Tracking servo ON
Spindle servo ON
Feed servo ON
“OPEN ”appears in the indicator.
“TRV”signal is output until detection of LIMIT switch.
Stop after detection of LOADING switch.
Proceeds to next step after detection of LOADING switch.
if FLSW = L, (IC103, 21 pin)
Proceeds To Next Step.
LSON = “L”(IC101, 2 pin)
FLOCK = “H”→“L”(IC102, 11 pin)
TLOCK = “H”→“L”(IC102, 12 pin)
POWER ON
If a disc is not loaded, “– –:––” appears in the time indicator.
VCO lock
CDX-E400
10
CDX-E400
A
Tracking gain rough ADJ
~ * Data fetch cycle ~
After searching the beginning, MUTE is cancelled.
~ PLAY ~
MUTE ON
TRACK search
MUTE ON
Spindle motor stop
: MUTE OFF = “H”→“L”(Q7 Collector)
“0:00”appears in the time indicator.
Tracking balance ADJ (only tray OPEN/CLOSE)
Focus balance ADJ
Focus gain ADJ
Tracking gain ADJ
* TOC READ
TRACK NO. “1”is searched.
Set to SEARCH by means of Y, Tkey.
After searching the beginning, MUTE is cancelled.
~ PLAY ~
Press the STOP key.
Laser OFF
Forced feed return
~ STOP ~
: MUTE ON = “L”→“H”(Q7 Collector)
: MUTE ON = “L”→“H”(Q7 Collector)
: FLSW (IC103, 21 pin) = “L”
: MUTE OFF = “H”→“L”(Q7 Collector)
“0:00”appears in the time indicator.
: LSOFF = “L”→“H”(IC101, 2 pin)
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