TC Electronic ATAC User manual

EDIT
PROGRAM F1
F5
F2
F6
F3
F7
F4
F8
UTILITY BYPASS
UNDO
DO
DISPLAY
PAGE
BACKLIGHT
VIEWINGANGLE
EDITA B PROGRAMSELECT
DEVICE
SETUP
TIMECODE
LOAD
MIDIIN
DIGITAL IN
LAN/SCSI
EXT.OVERLOAD
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SIGNAL
BYPASS
PCMCIA MEMORY CARDREMOTE SYSTEM
ATAC
Service Manual
3rd Edition
TC Electronic A/S, Sindalsvej 34, DK-8240 Risskov, DENMARK Telephone:: [phone] Fax: [phone] Email: [email protected] WWW: http://www.tcelectronic.com

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TC Electronic A/S
ATAC Service manual
page
2
Table of contents:
Introduction........................................................................................................................3
Quick Trouble Shooting:...................................................................................................4
DIP Switch settings:...........................................................................................................5
Built-in Test Program:........................................................................................................6
Disassembly procedure.....................................................................................................7
Exchange of battery:..........................................................................................................8
Circuit description:.............................................................................................................9
LED error codes:...............................................................................................................10
Software Changes:...........................................................................................................11
Technical Specifications:................................................................................................12
Specifications for cables:................................................................................................13
Multiple ATAC/M5000 setup:......................................................................................14
Appendix list: schematics, service notes, part lists and PCB layouts......................15
3rd Edition
©Copyright 1997, TC Electronic A/S. All rights reserved.
Filename: ATACSMN3.DOC
Stock number: 605 0320 11

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TC Electronic A/S
ATAC Service manual
page
3
Introduction
The purpose of this manual is to support skilled technicians in repairing the ATAC
The manual begins with a Quick Trouble Shooting table. Here, hints, advice and
possible problems are described.
If the problem is more serious, the next step is to use the Built-in Test Program. With
this program the problem can often be narrowed down to a specific section or
component.
The next section consist of disassembly and exchange procedures. Please be aware of
warranty rights before disassembling. See the warranty card.
Circuit description is a brief description of the circuits on the different boards.
Circuit description is followed by a list with LED error codes.
The list with software changes states the corrections and additions for various software
versions.
Finally the specifications are stated.
Appendix contains schematics, service notes, part lists, layouts etc.
Schematics start with a main sheet, where sub sheets are shown as blocks. Even sub
sheets might have sub sheets. In the Schematics some connections have label names to
help the reader. If a label name is framed, it means that it is "connected" to another
sheet. Label names followed by the symbol "*" mean that the signal is active low, i.e.
RESET*: the reset function takes place when the signal is low.
This service manual does not contain schematics for the external power supply.
Part lists contain a column called TCcode. Use this code when ordering spare parts. If
the TCcode field is empty; it means the component cannot be ordered separately. The
coordinates in the column Pos. refer to the PCB layout page. The column named Page
refers to page no. in the schematics. In column comments a short explanation of the
function is stated. For some components, alternative types are mentioned.
PCB layouts are made as gatefolds.
Finally appendix contains a spare part list for mechanical parts.

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TC Electronic A/S
ATAC Service manual
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4
Quick Trouble Shooting:
Use this table to solve problems or find out what to do next.
Symptom Action:
Cannot connect to M5000/X. Are the DIP switches set correctly? See section "DIP Switch Settings".
Is the power up sequence correct? Powering up the ATAC and M5000/X at the same time may cause problems. Use this sequence:
1. Connect ATAC to the M5000/X or to the MULTAC.
2. If MULTAC is used connect this to M5000, otherwise goto step 3
3. Turn on M5000/X. Wait 5 seconds.
4. Turn on the ATAC.
Check M5000/X internal fuse. The fuse F1 is located inside the M5000/X, at the CPU board close to the Remote connector. Fuse size:
T 630mA.
Blank display.
Cannot run application software.
Load the application software again.
To enter the load menu, press DO at power on
No light in LED's.
Bad keys or encoders.
Try to run the Built-in Test program.
See section "Built-in Test program".
Hum or Noise in Audio, when connected to M5000/X Install software v.1.24 or higher.
Make sure there is no ground loops or disconnect the shield wire in the cable connecting the ATAC to the M5000/X.
Message: "Serial no. corrupted" Serial no. data is lost, normally caused by electric shock. The unit works fine without the serial no. data. Just abort error message.
To re-install serial no. data; use special PCMCIA service card.
LD1, LD2 or LD3 at main board is lit See section "LED Error Codes"
Lines and spots in display, when power is off Disconnect the remote cable if you are using the M5000/X without the ATAC for longer times. Otherwise a small DC current will run
to the ATAC. Over long period, the current may cause damage to the display.
Midi no function Midi functions are not implemented in ver. 1.24 or lower. Use Midi connectors at M5000.

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TC Electronic A/S
ATAC Service manual
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5
DIP Switch settings:
The ATAC is fitted with four DIP switches for controlling the Boot Mode, Network
Mode and Display Mode. The switches are accessible at the back panel.
The setting shown in figure A is: off, off, on ,off. This setting is used for connecting
the ATAC directly to a M5000.
2
3
4
1
BOOT FROM PCMCIA
NETWORK MODE (RS485)
INVERT DISPLAY
INT. TERMINATE (RS485)
Fig. A:
O
N
The setting shown in figure B is: off, on ,on, on. This setting is used for connecting the
ATAC to a MULTAC.
2
3
4
1
BOOT FROM PCMCIA
NETWORK MODE (RS485)
INVERT DISPLAY
INT. TERMINATE (RS485)
Fig. B:
O
N
Switch #1, Boot mode:
OFF Normal Boot mode.
ON Service Boot mode. Requires special PCMCIA service card1.
Switch #2, Network mode2:
OFF single mode; for controlling only one M5000 directly.
ON RS485 mode; used when connected to MULTAC.
Switch #3, Display mode:
OFF for inverted LCD
ON for normal mode.
Switch #4, Termination2:
OFF single mode termination; for controlling only one M5000 directly.
ON RS485 mode termination; used when connected to MULTAC.
Note 1: Powering up without PCMCIA service card may cause application
software to corrupt.
Note 2: Switch #2 & 4 must always be set to matching positions.

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TC Electronic A/S
ATAC Service manual
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6
Built-in Test Program:
The ATAC has a Built-in Test Program. Use the program to narrow down problems
with keys, encoders, LED's etc.
To run the program; press UNDO while powering up.
Follow the instructions on the display.
To leave the Built-in Test Program; turn off power.
ATAC Built-in Test Program Version 1.01 has following tests:
1. Display
2. Midi connection (automatic, uses internal relay)
Notice: Midi functions are not implemented in software version 1.24 or lower.
3. Remote connection (automatic, uses internal relay)
4. Keys
5. Encoders (dial knobs)
6. LED's (indicators)
7. Voltages
The voltage labels refers to labels in schematics. Some voltages are attenuated to protect
the test circuit. When measuring manually, measurements must take place before the
attenuators (marked with dash lines in schematics) to match the above voltage limits.
Voltage limits in automatic voltage test:
Voltage label limits
U-PSIN: +7.5 to +15.5 VDC
U-REMIN: +4.7 to +5.1 VDC *
U+5V: +2.17 to 2.25 VDC
U-NEGATIV: -14.2 to -12.8 VDC
U-CONT: -8.67 to -7.83 VDC
U-BATT: +3.0 to +4.0 VDC
UCC-PCMCIA1: 0.0 to +0.3 VDC
UCC-PCMCIA2: +4.8 to +5.0 VDC
CC-PCMCIA3: +11.4 to +12.4 VDC
* U-REMIN will fail test, if D13 is removed. See part list.

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TC Electronic A/S
ATAC Service manual
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7
Disassembly procedure
Disconnect power before disassembling.
1. Place the ATAC with the front panel facing down. In this way the buttons will stay
in the front panel when the boards are removed, see fig. 1.
2. Loosen four screws at the bottom, one in each corner
3. Remove the cover.
4. Remove the protection plastic in one corner. The plastic protects against electric
shock from the terminals for backlight.
5. Remove four spacers, one in each corner.
6. Lift up gently the boards, make sure the front panel stays on the table. DO
NOT turn around the front panel, all the buttons are loose!
7. To remove the switch board (PC7002-x); loosen five screws and solder out the
pins at J2.
8. To remove the display; loosen four screws and solder out the two wires for
backlight.
Note: The software cannot run without the display. An extension cable is
therefore very useful for doing trouble shooting while the unit is running.
Disassembling gives access to do measurements at all components.
WARNING: Do not touch the terminals at JP1. High voltage for backlight!
Fig. 1: Disassembling of ATAC.
2341
O
N
cover
boards
front panel
spacer spacer
screw
screw

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TC Electronic A/S
ATAC Service manual
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8
Exchange of battery:
Recommended battery type: CR2032.
TC stock no. (TCcode) for battery: 342 0000 11
Exchange procedure:
1. Turn Off Power and Disconnect Power Cord.
2. Place the ATAC with the front panel facing down. In this way the buttons will stay
in the front panel when the cover is removed, see fig. 1.
3. Loosen four screws at the bottom. and remove the cover
4. Desolder the old battery by warming up each terminal one by one. Avoid any
short circuit of the terminals. Be careful not to damage the wiring on the board.
5. Insert new battery and solder the terminalsone by one. Avoid any short circuit of the
terminals.
6. The voltage measured directly across the terminals of the new battery should be
higher than 3.0VDC.
7. Do not discard the old battery. Hand it over to a recycling company or your dealer.
CAUTION:
DANGER OF EXPLOSION IF BATTERY IS INCORRECTLY REPLACED.
REPLACE ONLY WITH SAME OR EQUIVALENT TYPE RECOMMEND BY
THE MANUFACTURER. DISCARD USED BATTERIES ACCORDING TO THE
MANUFACTURERS INSTRUCTIONS.
VARNING:
Felaktigt batteribyte kan medfora fara for explosion. Anvand darfor endast samma typ
eller likvardig typ enligt apparattillverkarens rekommendation.
Kassera forbrukade batterier enligt tillverkarens anvisning
ADVARSEL:
Lithiumbatteri. Eksplosionsfare ved fejlagtig håndtering. Må kun udskiftes med batteri
af samme fabrikat og type.
Lever det brugte batteri tilbage til leverandøren.

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TC Electronic A/S
ATAC Service manual
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9
Circuit description:
The ATAC consist of a main board, a keys board, a LED board and a display. Here is a brief description of the boards:
The main boardhas seven sections: CPU, Connection to Front, Memory, Connection to
Display, Power Supply, Interface, Jeida Connector.
The CPU section consist of the CPU, IC1 and some discrete components. The five encoders
and the three error code LEDS are connected directly to the CPU
Connection to Front: Some latches takes care of the communication to the LED board and
to/from the keyboard.
Memoryconsist of two RAM ICs and one Flash IC. The RAM is working memory for the
CPU and the Flash contain the program for the CPU. The Flash program can be updated from
PCMCIA card or via the remote cable from a M5000
Connection to Display: IC17, a DC/DC converter produces a negativ voltage. This voltage is
used by the op-amp, IC16, which controls the contrast voltage for the display.
The transformer TR1 generates the backlight voltage.
The negative-, contrast-and backlight voltage can be checked by the CPU, for instance when
running the Build in Test Program.
Power Supply: The ATAC can besupplied from either the DC-in socket or from the Remote
connector. The external transformer produces an unregulated DC voltage. This voltage is
regulated to a clean 5VDC by IC18.
IC 19 controls the reset function and battery back-up for the RAM.
Four different voltages in the power supply can be checked by the CPU.
Interface consist of Midi and Remote connection. The Midi connectors has no function. They
are not implemented in software version 1.24 or lower. The two relays RL1 & 2 are only used
for the Build in Test program
Jeida Connector:The circuit between CPU and Jeida is reduced by using a PAL, IC12.
The Keys board: Here are all the keys located. The keys are scanned in a 5 x 8 matrix.
The LED boardis simply fitted with 9 LEDs.
The Display has two connections, one for communication and one for back light voltage.
WARNING: High Voltage. Do not touch the back light termnals!

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TC Electronic A/S
ATAC Service manual
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10
LED error codes:
At each power up, the ATAC runs several tests.
If an error occurs 3 LED's at the main board will show an error code. Use the table below for decoding error codes.
LD1 LD2 LD3 Code explanation Action
off off off The CPU is running OK (all LED's blink once and LD3 is lit for a moment at reset, )
on off off The program encountered an Error while checking its own code Load the application software again.
off on off Errors detected while writing to and reading back from the static ram Check IC 9 & 11.
on on off Errors detected while writing to and reading back from the LCD display memory Check connector J1 and the LCD.
on off on The voltages U-PSIN, U-REMIN or U+5V were out of range Measure the voltages with a multimeter. See section Built-
in-Test Program for Voltage limits
off on on Errors were detected while erasing and programming Flash Check IC10
off off on Load menu is selected Load software from network or PCMCIA card

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TC Electronic A/S
ATAC Service manual
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11
Software Changes:
Listed below are changes in the application software for the ATAC.
Filename for application software is AP1-Vxxx.ATC (xxx represents the version no.)
changes from version 1.20 to 1.21:
•SMPTE update playing/recording etc.
•digital_in led and other yet not used LED's off when close Conn.
•corrected bug with search while late connection
•ATAC sometimes hanging in semaphore, not corrected completely before v1.22
•corrected procedure in trying to connect to just started frame
•now able to handle M5000X Frames
changes from version 1.21 to 1.22:
•improved handling of M5000X Frames
•SMPTE stopped implemented not --:--:--:--
•ATAC sometimes hanging is corrected
•pitch-1 & 2 algorithm extended with one page
changes from version 1.22 to 1.24:
•handling of backlight changed to avoid Audio Noise. Switching frequency changed from
approx. 400Hz to 24kHz
•multitask bug corrected

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TC Electronic A/S
ATAC Service manual
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12
Technical Specifications:
Environment: Operating, 0° to 50° C
Storage, -20° to 60° C
Power Requirements: 12 VDC, 1 Amp., negative at tip!
DC in socket: 3.5mm mini Jack, tip 2.1mm .
Midi sockets: 5 pin DIN 45° Female
Remote socket: 7(8) pin DIN 45° Female
Display: 240 x 60 dot LCD cold cathode backlit
PCMCIA Slot: Type I Memory Cards
Dimensions: 8.4 x 6.9 x 1.6 inches
(213.4 x 176.5 x 40.2 mm)
Finish: Black anodized aluminum face plate
Black painted steel chassis
Durable foam base pad
Back-up battery: CR2032 lithium battery, life time; >10 years
Net Weight: 2.4 lbs. (1.1kg)
Shipping Weight: 6.6 lbs. (3 kg)
R=0.5mm
213.4mm
171.4mm
176.5mm
5.08mm
18
2.5mm
3.0mm
R=52.0
16.0
R=1122.7mm
210.8mm
29.7mm
149.9mm
154.9mm
28.0mm

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TC Electronic A/S
ATAC Service manual
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13
Specifications for cables:
Cable for connecting ATAC to M5000/X or to MULTAC:
Cable for connecting M5000/X to MULTAC:
Split-cable for connecting Power Supply to ATAC:

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TC Electronic A/S
ATAC Service manual
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14
Multiple ATAC/M5000 setup:
Here are some examples with MULTACs in different setups: Maximum cable lengths.
There are five rules for cable lengths:
1. Cable length between M5000 and MULTAC: max. 1 meter.
2. Cable length between ATAC and Power Supply: max. 10 meter / 33 ft.
3. Cable length between ATAC and M5000: max. 10 meter / 33 ft.
4. Cable length between ATAC and MULTAC: max. 100 meter / 328 ft.
5. Cable length between two MULTACs: max. 100 meter / 328 ft..
Here are some examples for maximum cable length.
Ex. 1: Classic setup with a M5000 and one ATAC. (rule 2 and 3)
Ex. 2: Typical MULTAC setup. (rule 1, 2 and 4).
Ex. 3: A setup with power supply connected to the MULTAC. (rule 1,2 and 4)

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TC Electronic A/S
ATAC Service manual
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15
Appendix list: schematics, service notes, part lists and PCB layouts
Schematic for Main board ver. PC7001-ver. 3 7 pages
Part list for Main board ver. PC700131 9 pages
PCB layout for Main board ver. PC7001 v. 3 1 page
Schematic for Main board ver. PC7001 ver. 2 7 pages
Service note 708 10 00 01 for PC7001 ver. 2 1 page
Part list for Main board ver. PC700120 8 pages
PCB layout for Main board ver. PC7001 v. 2 1 page
Schematic for Keys & LEDs board ver. PC700230 1 page
Part list for Keys & LEDs board ver. PC700230 2 pages
PCB layout for Keys & LEDs board PC7002 ver. 2 1 page
Part list for mechanical parts in ATAC 1 page