Toshiba PC D15 Service Manual

Page 2

PC-D15 l

CONTENTS
1. FEATUER ...................................................................... 2
2. OPERATING CONTROLS ........................................................ 3to4
3. OPERATING INSTRUCTIONS ..................................................... 5 106
4. TECNICAL POINTS ................ _ ............................................ 6 to 9
5. DISASSEMBLY INSTRUCTIONS ................................................. 10 to 12
6. BLOCK DIAGRAM ............................................................... 13
7. ELECTRICAL ADJUSTMENT ................................................... 13 to 17
TEST EQUIPMENTS ........................................................ 13 to 14
RECORD/PLAYBACK HEAD AZIMUTH ADJUSTMENT ..................................... 14
PLAYBACK SENSITIVITY ADJUSTMENT ............................................... 15
BIAS LEAK ADJUSTMENT ........................................... . ............. 15
LINE INPUT SENSITIVITY ADJUSTMENTS ............................................. 15
LEVEL METER ADJUSTMENT ...................................................... 16
RECORD/PLAYBACK FREQUENCY CHARACTERISTIC ADJUSTMENT ......................... 17
RECORD/PLAYBACK SENSITIVITY ADJUSTMENT ....................................... 17
8. P.C. BOARD PARTS LOCATIONS ..................................................... 18
9. SCHEMATIC DIAGRAM (MAIN) ..................................................... 19
SCHEMATIC DIAGRAM (METER DRIVE & LED BLOCK) .................................... 20
SCHEMATIC DIAGRAM (POWER SUPPLY BLOCK) ........................................ 20
SCHEMATIC DIAGRAM (LOGIC BLOCK) ............................................... 20
IO. WIRING ...................................................................... 21
11. CABINET PARTS LOCATIONS ...................................................... 22
12. MECHANICAL PARTS LOCATIONS ................................................... 23
13. PARTS LIST ............................................................... 24 to 29

0 Two motors and IC logic control.

1. FEATURES

0 Many functions in a compact housing, such as a

Feather-touch operating buttons.
Direct button change without using the STOP bUtton
protects the tape.

0 Bar-graph peak meters with LEDs.
Electronically controlled bar-graph peak meters are
more responsive, accurate, and easier to read than
mechanical meters.
Levels below 0 dB are displayed in green and levels
above 0 dB in red.

0 Automatic tape selector detects the chrome tape
detection hole and automatically switches the mode
from NORMAL to CHROME, and viceversa.

Pushing the Fe-Cr switch enables automatic FER RO-
CHROME and CH ROME mode selection.

memory counter, automatic play, unattended record-
ing, and alarm playback.

An all sendust (AS) head with new sendust laminated
core assures lowdistortion widerange recording.
Attractive all-aluminium housing, including the rear
panel.

Direct loading allows easy and secure tape loading
and unloading with a good view of the tape.

Dolby system.

Remote control jack.

Noise Reduction System is manufactured under
license from Dolby Laboratries Inc. "Dolby" and
the doublevD symbol are trademarks of Dolby Labo-
ratries Inc.

Page 4

l PC-D15 PC-D15

BACK VIEW

[MIC]
i-Microphone Jacks
Connect a microphone (Optional) to these jacks;
is for the left channel and for the
right channel.

[OUTPUT]

Output Control
Turn this control to adjust the [LlNE OUT] jack level
to the tuner and record player levels. This control does
not affect the headphone levels.

LINE IN]
Line Input Jacks

External signals are input to these jacks throngh pin
cords: is for the left channel and for the
right channel.

LINE OUT]

Line Output Jacks

The cassette deck signals are output from these jacks:
is for the left channel and for the right
channeL

[REMOTE]

Remote Control Jack

Connect the remote controller (Option RM~15l to this
jack.

Note: The rating and serial number plate is on the
bottom of the set.

Figure 2

-4;

3. OPERATING INSTRUCTIONS

Notes:

I Operating buttons are not effective for 3 seconds

after the power is turned ON.

0 All operating buttons are reset when power is cut

OFF.
PLAYBACK

1. Load tape

button

3. Push the [ > ] (Plavl

Figure 34

0 Push the [Fe-Cr] button when using ferrochrome

T399.

0 If the [ II ] (Pause) button is pushed, the [ b ](Plav)

button is not effective.

0 All operating buttons are ineffective until a tape is
loaded. If a tape is unloaded during fast forward (FF)
or rewind (REW) operation, the operating buttons
are reset.

2. Push the [DOLBY NR]
button to play back a
Dolby-recorded ta pet

0 The full automatic stop mechanism (Full ASO) stops

recording, playback, fast forwarding, or rewinding
when the tape end is sensed.

I RECORDING FROM RECORD PLAYER OR RADIO

From amplifier

up

(Tuner or Phone)

3. First, push the [ II ]
(Pause button).then push
the [ I ](chordi and
[ p ] (Playlbuttons si-
multaneously to adjust
the recording levels by
reading the digital me-
ters.

1. Load tape with erase-
prevention tab.

4. Push the [ ll ] (Pause)

button again.

2. Push the [DOLBY NR]
button for recording "n
the Dolby system.

Figure 4.

0 Push the [Fe-Cr] button when using ferrochrome

tape.

0 Adjust recording levels so that the red LEDs flicker

in red (about 0 through +3 dB].

I RECORDING WITH MICROPHONE

Insert the microphone plugs into the microphone jacks

[MIC] on the rear panel and perform the above proce-

dure.

o The microphone jacks have priority to the [LINE
IN] jacks if pin cords are connected to the [LINE IN]
jacks.