6. PARTS LOCATION...................................................................................................................... 23
7. IC DATA....................................................................................................................................... 27
8. EXPLODED VIEW AND PARTS LIST ......................................................................................... 33
9. ELECTRICAL PARTS LIST......................................................................................................... 37
Please use this service manual with referring to the user guide ( D.F.U. ) without fail.
R
Printed on 100% Recycled Paper
Printed in Japan
CD7300
Part no. 05AK855020
First Issue 2003.07
ecm
MARANTZ DESIGN AND SERVICE
Using superior design and selected high grade components,
Only original
MARANTZ
parts can insure that your
MARANTZ
MARANTZ
product will continue to perform to the specifi cations for which
company has created the ultimate in stereo sound.
it is famous.
Parts for your
MARANTZ
ORDERING PARTS :
equipment are generally available to our National Marantz Subsidiary or Agent.
Parts can be ordered either by mail or by Fax.. In both cases, the correct part number has to be specifi ed.
The following information must be supplied to eliminate delays in processing your order :
1. Complete address
2. Complete part numbers and quantities required
3. Description of parts
4. Model number for which part is required
5. Way of shipment
6. Signature : any order form or Fax. must be signed, otherwise such part order will be considered as null and void.
CAUTION : After servicing this appliance and prior to returning to customer, measure the resistance between either primary AC
cord connector pins ( with unit NOT connected to AC mains and its Power switch ON ), and the face or Front Panel of product and
controls and chassis bottom.
Any resistance measurement less than 1 Megohms should cause unit to be repaired or corrected before AC power is applied, and
verifi ed before it is return to the user/customer.
Ref. UL Standard No. 1492.
In case of diffi culties, do not hesitate to contact the Technical
Department at above mentioned address.
Frequency response......................................................................................................................................... 2 Hz to 20 kHz
Dynamic range ..............................................................................................................................................................100 dB
Signal-to-noise ratio.......................................................................................................................................................110 dB
Channel separation ..........................................................................................................................................100 dB (1 kHz)
Power requirement .................................................................................................................................... AC 220V 60Hz (/C)
Power consumption ..........................................................................................................................................................12 W
Cabinet, etc.
Maximum dimensions................................................................................................................440(W) x 89(H) x 317 (D) mm
Weight ............................................................................................................................................................................ 5.7 kg
Allowable operating temperature...........................................................................................................................+5 to +35°C
Allowable operating humidity........................................................................................................ 5 to 90% (no condensation)
1
2. SERVICE PROCEDURE
Emergency Eject
1.To open the stucked tray, insert a pin into the eject pinhole and push
the eject lever.
2.Use a pin φ4mm or less.
This picture shows the unit upside down. The eject lever is pointed by the arrow.
The lever is thin so aim the narrow area carefully.
2
Cautions in Assembling and Disassembling
When removing the flat wire PS01, connecting the optical pick up and
the CD decorder board, short-cut the two lands pointed by the arrow
with solder. Otherwise the laser diode may be damaged by static electricity.
CD Decorder Board (PS01) Repair
When Repairing the CD decorder board PS01, you can fix the board on the loader unit
as shown in the pictuer below with the flat wires that are provided as service parts.
15P YU15170010
24P YU24230520
20P *YU001030R
PCB Fix Screw
3
Disk Tray Open/Close Speed Adjustment
Open/Close speed of the tray can be changed.
When vibration occurs upon tray open/close and some unusual behavior happens, change the tray speed to stop
vibration.
Description of the terms displayed on FL
start
T-Push Tm
T-On Time open
Tray open
T-OffTim
start
T-On Time close
Tray close
T-OffTim
T- P u l l C t
T- Pu s h T m
T- P u s h Tm
DC driving time on Tray open operation.
Tray is DC driven at start opening.
Then Tray is driven by pulse.
Time can be set between 0-2550ms.
T- O n Ti m e
Duration time of High in pulse drive.
Time can be set between 0-255ms.
T- O f f Ti m
Duration time of Low in pulse drive.
Time can be set between 0-255ms.
T- P u l l Ct
The number of pulses on Tray close
operation.
<Vibration on Disc Tray Open / Close>
Step 1. With pressing DISPLAY and QUICK REPLAY buttons, press POWER button.
Step 2. Press EASY JOG button.
“T-OnTime 015” (means Tray On Time 015ms default) is displayed.
Tu r n EASY JOG to change tray open/close speed from 000 to 255ms. Turn the number smaller to make the
open/close speed slower. Turn the number bigger to make the speed faster. Set bigger number to stop the tray
vibration. But the open/close speed becomes faster.
Press EASY JOG button again. The display changes as shown below so you can change other parameters
for the open/close speed.
Display
(Default Setting)
T- OffTim 003
T- PushTm 070
T- PullCt 040 When disc clamp miss happens. Set smaller number to make it better.
Step 3. Press EASY JOG button to complete adjustment.
Step 4. Press STOP button to store the settings in memory.
To reset all the settings to default status, press number 0 button in Service Mode 0
(Display : Ver
When open/close speed is too fast.
Note) 001, 002, 003 cannot be set.
When vibration cannot be stopped
by adjusting T-OnTime.
P00). When miss-operated, press number 0 button to retry.