Fisher TAD 9415 Service Manual

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Extracted text from Fisher TAD 9415 Service Manual (Ocr-read)

Page 1

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Contents
Specification ................ ............... 1
Operating the Reset Switch ................... 1
Laser Beam Safety Precaution ................. 2
Handling the Pickup ......................... 2
Before Repairing the CD Player ................ 2
Disassembly ............................... 3
Adjustment Mechanism ...................... 8
Standard Maintenance ...................... 12
Lead Wire Attachment ...................... 16
System Connection ........................ 17
Description of Operation ..................... 18
Flow Chart of Operation ..................... 22
Service Mode (CD) ......................... 28
Service Mode (Tuner & Amplifier) ............. 35
3D Adjustment ............................ 36
laps Deck Adjustment ...................... 38
rape Deck Torque & Replacement ............. 39
i'uner Adjustment .......................... 40
Exploded View (Cabinet) .................... 41
' Exploded View (Chassis) .................... 42
Parts List ................................ 43
Parts List (CD Mechanism) ................... 51

Exploded View (CD Base Mechanism) .......... 54

This Sen/ice manual consists of "TAD-9415, REM-9415.

VFILE no,

SERVICE MANUAL

TAD-415

(US)

Digital High-Fidelity System

with REM-9415 Wireless Remote Control

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PRODUCT CODE No.
129 438 00
Exploded View (CD Rotary Mechanism) ......... 55
Exploded View (Tape Mechanism) ......... 56
Parts List (Tape Mechanism) ................. 57
TroubleShootingGuide 58
Display Block .............. - ............. '. . 64
IC Block Diagram .......................... 65
Schematic Diagram (Tuner) .................. 72
Wiring Connection ......................... 74
Schematic Diagram (CD Main) ................ 76
Wiring Diagram (CD Main) ................... 78
Schematic Diagram (CD Mechanism) ........... 80
Wiring Diagram (CD Mechanism) .............. 82
Schematic Diagram (Deck) ................... 84
Wiring Diagram (Deck) ...................... 86
Schematic Diagram (Front) ................... 98
Wiring Diagram (Front) ...................... 90
Schematic Diagram (Pre Amplifier) ............. 92
Wiring Diagram (Tuner & Pre Amplifier) ......... 94
Schematic Diagram (Main Amplifier) ........... 96
Wiring Diagram (MainAmplitier) ............... 98
_IC Voltage Table of CD ............ ~ ......... 100

REFERENCE No. SM580319

Page 2

SPECIFICATIONS

. TAD-9415 MAIN UNIT CD changer section
Ampliﬁer section Type ............... 24-disc Bi-Directional,
I » Continuous minimum sine wave RMS power output per channel Radial Transport
1 at 8 ohms from 40 Hz to 20 kHz with no more than 0.9% total Channels ........... 2-channel stereo
harmonic distortion . . . . 100 Watts Sampling frequency . . . 44.1 kHz
BASS control ........ i 10 dB (100 Hz) Pickup ............. Optical 3-beam
Treble control ........ 1 10'dB (10 kHz) semiconductor laser
Dynamic bass ....... i 10 dB ( 100 Hz) Frequency response . . . 20 Hz - 20 kHz
Input sensitivity and impedance Signal to noise ratio . . . 95 dB
PHONO ........... 3.0 mV / 47 kohms Wow and flutter ...... Below measurable limits
VIDEO (Audio) ...... 300 mV / 47 kohms General
Outputs impedance Power requirements . . . AC : 120 V110%, 60 Hz
SPEAKERS (Nominal) 8 ohms Power consumption . . . 185 Watts
PHONES (Nominal) . . 8 - 32 ohms Dimensions(approx.) . . . 16.5"(W)x17.2"(H)x15.7(D)
Tuner section Weight(approx.) ...... 38.6 lbs.
(FM)
Frequency range ..... 87.5 - 107.9 MHz (200 kHz steps) REM-9415 WIRELESS REMOTE CONTROLLER
Usable sensitivity ..... 12.2 dBf (MONO) Power requirements . . . - 3VDC - Two "AA" batteries ,-;-
(AM) '- Dimensions(approx.) . . . 1.5(W)x6.6(H)x0.7(D)
Frequency range ..... 520 « 1.710 kHz (10 kHz steps) Weight(approx.) ...... 1.7 oz. (without batteries)
Sensitivity ........... 500 #V I m (AM Loop Antenna)
1 Cassette deck section
Track system ........ 4-track. 2-channel stereo
Frequency response . . . 60 - 12,500 Hz (Normal tape)
Signal to noise ratio . . . 52 dB
Wow and flutter ...... 0.18 % (WRMS)

Fast forward /
rewind time(approx.) .. 110 sec. (C-60)

IMPORTANT INFORMATION
Because its products are subject to continuous improvement, FISHER reserves the right to modify product designs and spec-
iﬁcations without notice and without incurring any obligation.

OPERATING THE RESET SWITCH

This unit is provided with a reset switch on the rear panel. The reset switch serves to initialize the microprocessor in the unit
which controls the (ID-CHANGER, TUNER, TAPE-DECK and AMPLIFIER section. If the unit is to be serviced or key input is
not acknowledged even when the CD, TUNER, TAPE DECK and etc. operation buttons are pressed, press the RESET switch
and initialize the microprocessor following the step below.

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1) . Disconnect the AC power cord from the power outlet.

2) . Keep the RESET switch depressed for 60 seconds.
(The backed up electrolytic capacitor is discharged by
keeping the RESET switch depress.)

3) . Reconnect the AC power cord to the power outlet.

4). Press the CD-CHANGER, TUNER. TAPE-DECK and etc.
operations, and check their operation.

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Page 6

DISASSEMBLY (CD)
[If the CDs cannot be removed]

5. Procedure for removing CD5 from the disc table (turntable)

1) Remove the screw (D holding the sub-top lid in place.

2) Remove the sub-top lid in the direction indicated by arrow ®.

3) CDs can now be removed through the space created by removing the sub-top lid.

4) If the disc table will not turn, perform steps (1) and (2) of the gear setting procedure described below. This will allow

the disc-table to be moved.

(1) As shown in the detail drawing at right, turn the cam gear for front loading in the direction indicated by the arrow so
that it and the slip gear move to a position where they do not engage each other.

(2) As shown in the detail drawing at left, turn the cam gear for play loading in the direction indicated by the arrow so
that it and the slip gear move to a position where they do not engage each other.

To perform gear setting steps (1) and (2), either move the motor drive systems by hand or apply DC 3 V to the appro-
priate motor terminals to activate them. When applying DC 3 V to operate the motors, make sure to disconnect the
motor lead wires before applying voltage. The motor drive circuitry could be damaged it the motor lead wires are not
disconnecttﬂjirst. _ re

SUB TOP-Ll D

CAM GEAR

DISC- TABLE

CAM GEAR ' sup GEAR
FOR PLAV LOADING FOR FRONT LOADING

6. Procedure for removing CDs from the base mechanism

1) As shown in the diagram, unchuck CD5 that are chucked by turning the chucking gear in the direction indicated by the
arrow.

- To turn the chucking gear in step 1). either move the chucking motor drive system by hand or apply DC 3 V to the mo-
tor terminals to activate it. When applying DC 3 V to operate the motor, make sure to disconnect the motor lead wires
before applying voltage. The motor drive circuitry could be damaged it the motor lead wires are not disconnected first.

2) Once the CD is unchucked, move it from inside the base mechanism to the disc-table.

To move the CD in step 2), either move the play loading motor drive system by hand or apply DC 3 V to the motor tear

i minals to activate it. When applying DC 3V to operate the motor. make sure to disconnect the motor lead wires before v.
applying voltage. The motor drive circuitry could be damaged it the motor lead wires are not disconnected first.
3) CDs in the disc table can now be removed using the method described in section 1.

-5-

Page 13

STANDARD MAINTENANCE (CD)
Applying grease and grease point

1. Front panel 2. Play loading roller

Apply CEMEDINE I575 PLAV LOADING
H LEVER (RIGHT)

Iround um you.
Hooking i .

@ﬁ Aoply MC-gluse EM-SOL
PLAY LOADING

V Appi MC- ruse EM-SOL

\ LEVER (LEFT) amzd "£33185.
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Auply i
BIC-grease EM-SOL >
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Apply MCrgrease EM-soL
around the shall,

3. Shutter portion 4. Disctable portion

SHUTIER
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DRIVE GEAR fé»
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DISC-TABLE

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App|y MC-Greise 94750:.
on Shaded Portion,

Page 29

SERVICE MODE (co)

Specifications
To enter any service mode other, first simultaneously press the STOP and CATEGORY-SUB keys on the unit. This access-
es the service mode entry state. New press one of the buttons on the unit to enter a service mode. As the service mode
entry state is discontinued after 1 second elapses, the system will enter a service mode only if the next key is pressed
within one second.

1. Checking the key input signal connections
- Enter this mode by pressing the DISC SKIP - DOWN key during the service mode entry state.
- When the unit enters this mode, only the indications corresponding to the keys listed below illuminate on the display.
- In this mode, each time one of the units keys is pressed. the corresponding indication on the fluorescent display goes
out. (The portions of the display that are not visible increase.) .
- The unit is operating normally if, after pressing all of the keys listed below. no indications are visible on the display.

KEY DISPLAY KEY DISPLAY KEY DISPLAY
LOAD/EJECT 11 ENTER CATEGORY MAIN 20 0 10
STOP X ENTER CATEGORY SUB --- 9 9
PLAY/PAUSE 12 DISC SKIP UP 21 8 8
FWD SKIP . 13 DISC SKIP DOWN 22 7 7
BACK SKIP 14 MEMORY 23 B 5
CATEGORY SELECT MAlN 15 CLEAR 24 5 5
CATEGORY SELECT SUB 16 4 4
INTRO 17 3 3
RANDOM 18 2 2
REPEAT 19 1 1

X : Releases the key checking mode and returns the set to the normal mode.
--- : Used to enter the service mode. It is not necessary to press this key.

TABLE 1 : Corresponding keys and displays in the key checking mode

FIGURE 1 : The Lower part of FL ( Fluorescent Rays Tube Display )

2. Checking FL connections
- Enter this mode by pressing the REPEAT key during the service mode entry state.
- When the unit enters this mode, all of the indications on the fluorescent display goes out.
- Each time the REPEAT key is pressed, the following cycle is repeated: all lit -+h ->5 eextinguished -> ----- .
- Press the STOP key or POWER OFF to exit this mode and return to the normal mode.

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FIGURE 2 : Checking connections for FL ( Fluorescent Rays Tube Display )

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Page 30

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SERVICE MODE (co)

3. CD tracking balance adjusting mode
- Enter this mode by pressing the PLAY/PAUSE key during the service mode entry state.
- If the power is off when this mode is entered, the power automatically comes on.
- In this mode, the tracking balance adjustment state (tracking is off) is automatically entered.
- In this mode, the tracking balance adjustment state can be entered by pressing the MEMORY key during playing.
Pressing the PLAY key in this state turns on the tracking servo and causes playing to begin.
, This mode is released when press the STOP key or power is turned off. and causes stop state.

4. CD operation display mode

- Enter this mode by pressing the MEMOFIY key during the service mode entry state.

If the power is off when this mode is entered, the power automatically comes on.

- In this mode, when a CD function is activated an indication of the type listed in Table 2, indicting the CD operation. ap-
pears in the track and index number section of the fluorescent display instead of the normal indication.

- In this mode, indications different from those that normally appear are displayed in the minute and second sections of
the fluorescent display, and numerals such as those listed in Table 3 appear in the disc number other indications ap-
pean

. This mode is released when press the STOP key or power is turned off

DISPLAY - OPERATION DISPLAY - OPERATION
0 0 Focus search has been begun 5 2 L-point access (FWD64 track jump)
0 1 Focus search has been begun 5 3 Mom access (REV16 track jump)
0 2 Waiting for focusing 5 4 L-pcinI access (FWDfG track jump)
0 3 Focusing 5 '5 L-point access (REV1 track jump)
0 4 Spindle kick is in progress 5 6 L-point access has been completed
0 5 Both CLV and tracking are ON 6 0 Pausing has begun
0 6 Both CLV and tracking are ON 6 3 Pause (REV16 track jump)
0 F Focus search has been completed (success, failure) 6 ,4 Pause (FWD16 track jump)
1 0 Spindle braking has begun 6 5 Pause (REV1 track jump)
1 1 Spindle braking is in progress 6 6 Pause (trace)
1 2 Pick return is in progress 7 0 Music access has begun
1 F Spindle braking 8. pick return have been completed 7 1 Music access (high-speed access has begun)
2 0 Fast forwarding is in progress 7 2 Music access (high-speed access is in progress)
2 1 Rewinding is in progress 7 3 Music access (high-speed access has been completed)
3 0 Playing has begun 7 4 Music access (high-speed access has been completed)
3 1 Playing is in progress 7 5 Music access (high-speed access has been completed)
3 2 Playing is in progress (skip return operation) 7 6 Music access (REV64 track jump)
4 0 TOC reading has been begun 7 7 Music access (FWD64 track jump)
4 1 TOC reading is in progress 7 8 Music access (FIEV16 track jump)
4 F TOC reading has been completed (success/failure) 7 9 Music access (FWD16 track jump) _
5 0 L-point access has been begun 7 F Music access (final stage)
5 1 L-point access (REV64 track jump)

DISPLAY: Track No. and Index No.

TABLE 2 : Displays during the CD operation mode (Track+ Index No. section)

DISC No. STATE OF CD ERROR
Good

Focusing is not possible in locus search.

The subcode is not input during disc starlup,

TOC cannot be read.

The focus was lost while the servo was on (during playing, etc).
The subcode is not input while the servo is on (during playing, etc).

TABLE 3 : Display of CD errors (Disc No. section)

U14>CDM~4

-29-

Page 51

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Page 69

Notice 73 FISHER

[j CORRECTION PRODUCTION CHANGE
V FILE NO.
D SERVICE FLASH |:| ADD INFORMATION
Please add this notice to the Service Manual listed below.
Category : Diqital High-Fidelity System Datum
Model : TAD-9415
Destination : US Reference No. ; $M530319 Issue Number : 1
The reason of citignge.
A : Misprint B : Quality Reliabilities C :Standardization 9
-D : Design E : F :
G :
Page 81 Ref. . . Interchange-
Section No. Part No. DescrIptIon Q'ty ability Reason
mars L151 1 Old 614 259 2939 ASSY,PANEL,FRONT 1
,543 (1ADZPAM0013-~A) (PANEL,FRONT)
614 259 2939 ASSY.PANEL.FRONT > 1 Serial No. D
(1ADZPAM0013--§) (PANEL,FRONT) 35429651 -
mus L151 13 0th 614 257 2394 KNOB,ROTARY,VOLUME 1
p43 (1ADZKNM0027--)
New 614 257 2394 KNOB,ROTARY.VOLUME 1 Serial No. D
(1AD2KNM0027--ﬂ) 35429651 ~
PARTS LIST 81 Did 514 259 6258 ASSY.PWB,MAIM-VOL(N.S.P) 1
p47 (1A04Btoco4503) (PWB,MAIN-VOL)
New 614 259 6258 ASSY,PWB,MAIN-VOL(N.S.P) 1 Serial No. D
(1AD4810C045OBA) (PWB,MAIN-VOL) 35429651 -
l PARTS LIST VR459 Old 514 263 3700 VR.RotARY,1ouK,v0LUME 1'
12 P48 VR469 New 645 009 3869 VR,ROTARY.100K.VOLUME 1 Serial No.
' 35429651 ~

NEW type isnt compatible with OLD type in this change. -
I I Handle exchange of each part shown as above with a method mentioned in the back page.
I o In case of exchange of each part shown as above, order part code mentioned in the back page.

7 » 1 Product Cord :129 438 00

SANYO FISHER SERVICE CORPORATION

Jun" '95 2100 N3 1200 West Artesia Blvd., Compton, California, 90220. REFERENCE 0- SM58°319'°1