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 vice-˜versa.

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-œ 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.