Matthew Heydman's
Digital Audio
Resource Pages
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TASCAM DA-P1
TEAC Professional Division
Welcome to my DA-P1 Info Page. I hope you find the information you're looking for here. If not,
let me know and perhaps I can hunt it down for you. Hopefully, this page will grow and evolve
into a central locale for DA-P1 resources on the internet. I welcome any comments and suggestions,
as well as links and other resources.
Thanks to Roy Norris who hunted down an actual
DA-P1 Owners Manual on the web (2MB .pdf)
Thanks to Fred Jan Kraan for his submissions dealing with System Display Test Mode and Level Knob Settings.
Service Manual
I've recently (Q4 2014) been receiving lots of inquiries regarding the DA-P1 service manual. I have been
unable to find a version of the document for sale from TEAC. So as a public service to the DA-P1 community
until TEAC provides a means of obtaining a copy the document,
here's a link to a pdf of the service manual (13MB).
|| Button Chart ||
Specs ||
Test Modes ||
Block Error Rate ||
Mechanical Test ||
|| Switch Test ||
Display Test ||
System Data Display Mode ||
Level Knob Settings ||
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 Button Combinations
Press the buttons when the deck is in condition to perform action.
| Buttons |
Condition |
Action |
| REC + PAUSE |
Stopped |
Format a new tape/record lead-in. |
| MARGIN RESET + ID SELECT |
Any |
Set Auto ID sensitivity.
Press MARGIN RESET to cycle through settings (-42, -52, -60, -62 dB).
Press ID SELECT to set the new level. |
| RESET |
Any/ABS |
Mark autolocate point |
| STOP + PLAY |
Stopped |
Find autolocate mark and begin playback |
| STOP + PAUSE |
Stopped |
Find autolocate mark and pause there |
| STOP + REW |
Stopped/ABS |
Find last record-in mark (and stop there) |
| STOP + FF |
Stopped/ABS |
Find last record-out mark (and stop there) |
| REW + FF + STOP + POWER ON |
Off |
Enter diagnostic mode |
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Specifications
I haven't decided how to present all this data yet. It's going to involve a whole
lot of data entry. For now, if there is info you need from here send me an email.
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Test Modes
The following information was obtained from the Tascam DA-P1 Service Manual...
To enter the test mode(s), hold the STOP, FFWD, and REW buttons down while
turning the power on. If you want to cancel the test mode(s), just turn the
unit off and back on.
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Test Mode: Block Error Rate Measurment
Initially, the deck is in this mode. The indicator for this mode is a "br"
appearing as the current program number. If you are in a different test
mode, you can enter this mode by pressing MARGIN RESET.
Once you're in this mode, play a tape. The Block Error Rate is displayed
in the tape counter section. With each press of MARGIN RESET, you cycle
through the available head readings:
| Reading |
Description |
| AH |
Block Error Rate read by head A |
| bH |
Block Error Rate read by head B |
| Ab |
Block Error Rate read by both A and B heads |
The numbers that comprise the Block Error Rate are defined as the count of
"C1 errors occuring in 128 PCM data blocks per track", displayed as
"the number of errors per 10000 blocks (near to 9984, the actual number
of blocks occupied by 78 tracks)."
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Test Mode: Mechanical
In order to perform any diagnostics in this mode, a test tape (part no.
TY-7551) is required. I'm not sure if a regular DAT would work. If anyone
experiments with this, I'd appreciate any info you could offer.
Load the test tape. When the tape transport stopped, press ID SELECT, and
the indicator for this mode ("ntESt") will appear on the display. Press play,
and if the mechanism is fully operational, the tape counter will read "PASS".
If an error has been detected, one (or more) of the following messages will
be presented on the display:
| Error |
Description |
| Err01 |
LMS4 didn't go LOW when STOP switched over to PLAY. |
| Err02 |
LMS1 didn't go HIGH when STOP switched over to PLAY. |
| Err03 |
Drum-ON signal transmitted, but no DFG pulse was detected. |
| Err04 |
DLOCK doesn't go HIGH whereas the drum "is in function". |
| Err05 |
Capstan-ON signal transmitted, but no CFG pulse was detected. |
| Err06 |
CRLOCK doesn't go HIGH whereas the capstan motor "is in function". |
| Err07 |
No supply reel pulse fed into U327-62 (FGS) whereas the tape is in motion. |
| Err08 |
No takeup reel pulse fed into U327-62 (FGT) whereas the tape is in motion. |
| Err09 |
No RF signal detected in play mode. |
| Err10 |
PLLLOCK doesn't go HIGH. |
| Err11 |
Not all of the RH2 to RH4 gone LOW. |
| Err17 |
See Err10. |
| Err1r |
See Err11. |
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Test Mode: Switches
Make sure there is no tape loaded in the deck for this mode. To enter this
mode, press LIGHT. "rd" will appear as the program number.
Pressing each possible button/switch on the unit will display the associated
symbol (see table, below) for each button as it is pressed. After you've pressed
or swithed every one, press LIGHT again. If everything operated normally, "PASS"
will appear in the display. However, if a button was not pressed, you will see
"er" followed by the symbol of the button which did not get pressed
(or malfunctioned?).
| Button/Switch |
Symbol |
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Button/Switch |
Symbol |
| COUNTER MODE |
F5 |
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PLAY |
t2 |
| RESET |
F2 |
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F FWD |
t6 |
| MARGIN RESET |
F4 |
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REW |
t5 |
| ID SELECT |
F3 |
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>>| (SKIP) |
t4 |
| PAUSE |
F6 |
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|<< (SKIP) |
t3 |
| REC |
F7 |
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HOLD |
F8 |
| EJECT |
S2 |
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Fs |
t8 |
| STOP |
t1 |
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INPUT |
t7 |
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Test Mode: LCD Display
Pressing COUNTER RESET will cause all display units to turn off. Then, one at a time,
each display section will illuminate in sequence. When the test is complete, each
component of the display will light up simultaneously. Pressing COUNTER RESET during
this test will freeze the test at that point. Releasing the button resumes the test.
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Test Mode: System Data Display
Press the COUNTER MODE button to enter this mode. The following info is displayed
in sequence:
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Version number |
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Input data category code
can be 00 (analog in), 80 (CD),
C0 (DAT) or C1 (DAT-P) |
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Level Knob Settings
Minimum setting for the level knob (combined with levels close to
0dBV on the display) is 3 1/4 (3.25). Higher input levels (and lower
knob settings) results in clipping of input stages.
The signal level is -14 dBV (~4.8 Vpp) when pad at 0 dBV
The signal level is -34 dBV (~48 mVpp) when pad at 20 dBV
Relative attentuation with level knob settings:
| 10 |
0 dBV |
| 9 |
- 0.6 dBV |
| 8 |
- 4.0 dBV |
| 7 |
- 8.3 dBV |
| 6 |
-12.0 dBV |
| 5 |
-14.5 dBV |
| 4 |
-17.5 dBV |
| 3 |
-23.2 dBV |
| 2 |
-31.8 dBV |
| 1 |
-47.3 dBV |
Disclaimer: The measurements are made with an almost pre-war tube
dBV/mV meter, so are not neccesary accurate.
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