Lyrec TR532 Series User manual

1. CONTENTS
2. SPECIFICATIONS
2.1 Technical Specifications
2.2 Dimensions
2.3 Accessories
3. GENERAL DESCRIPTION
3.1 Service Manual
3.2 Tape Deck
3.3 Record/playback Amplifiers AM77
3.4 VU-meter Panel
3.5 Console
3.6 Remote Control Unit
4. INSTALLATION
4.1 Unpacking
4.2 Interconnection
4.3 Connector Table
4.4 Connector Drawings
4.5 Transportation
5. OPERATION
5.1 Switching On
5.2 Loading
5.3 Play Mode
5.4 Record Mode
5.5 Fast Wind Mode
5.6 Edit Mode
5.7 Stop Mode
5.8 Tape Deck Logic
5.9 Ready
5.10 Drop In/Out
5.11 Safe
5.12 Line/Sync/Repro
5.13 Solo/Defeat
5.14 Tape Timer
5.15 Search Function
5.16 Varispeed
5.17 Sync Output
5.18 Special Features
5.19 Tape Position Controller TPC
1977-05-01 TR532 CONTENTS

6. OPTIONS
6.1 Remote Timer Display
6.2 XLR-panel
6.3 VU-meter Panel
6.4 Mounting Facilities for External Equipment
6.5 External Motor Control
6.6 Free Space on 8 and 16 Track Model
6.7 Transport Frame
6.8 Tape Position Controller
6.9 Tape Speed 7 1/2 - 15 ips
6.10 NAB - CCIR Switchable
7. ADJUSTMENTS
7.1 Reel Platform Height
7.2 Supply Tension Arm Pressure
7.3 Take-up Tension Arm Pressure
7.4 Capstan Pinch Roller Pressure
7.5 Guide Roller Pressure
7.6 Roller Perpendicularity
7.7 Upper Capstan Bearing Point
7.8 Mechanical Brakes
7.9 Tape End Microswitch
7.10 Tension Arm Potentiometer
7.11 Edit Mechanism Microswitch
7.12 Pinch Roller Solenoid Microswitch
7.13 Tension Arm, Guide Roller and Pinch Roller Air Cylinder
7.14 Power Supply
7.15 Lamp and Phototransistor Positioning
7.16 Capstan Speed
7.17 Maximum Capstan Speed
7.18 Maximum Varispeed
7.19 Hall Generator Balance Potentiometer
7.20 Tension Arm Servo System
7.21 Wind Speed Limit
7.22 Start Power
7.23 Start Power Time
7.24 Tape Motion Sensor
7.25 Relay 5
7.26 Search Logic
7.27 Coarse Head
7.28 Fine Azimuth
7.29 AM77 Adjustment Procedure
7.30 Playback/Sync
7.31 Bias
7.32 Record Level
7.33 Erase
7.34 VU-meter Panel
7.35 Bias Filter and DC-current
1977-05-01 TR532 CONTENTS

8. SERVICE
8.1 Capstan Motor System
8.2 Capstan Speed Preamplifier
8.3 Frequency Detector
8.4 Motor Control Commutator
8.5 Reel Motor Servo System
8.6 Wind Speed Limit Circuit
8.7 Dynamic Brake System
8.8 Capstan and Guide Roller Solenoids
8.9 Remote Control Unit Muting System
8.10 Demagnetization
8.11 Ventilation
8.12 Lubrication
8.13 Removing Head Block
8.14 Tension Arm Potentiometer Replacement
8.15 Performance Check
9. SPARE PARTS
9.1 Special Tools
9.2 Spare Parts
10. APPLICATION NOTES
11. SERVICE BULLETINS
12. DIAGRAMS
1977-05-01 TR532 CONTENTS

MULTITRACK RECORDER 16 AND 24 TRACKS - TR532-16 AND TR532-24
2.1 SPECIFICATION
Tape speed: 15 and 30 ips. Varispeed 7½ to 60 ips.
(Optional: 7½ and 15 ips. Varispeed 3 3/4
to 30 ips.)
Reel type: Up to 10.5" NAB hub
Long term speed
stability: Better than 0.1%
Wow and flutter: Peak weighted: Max 0.04%
Peak unweighted: Max 0.09%
Measured with EMT 420 according to DIN 45.507
Rewind time: Adjustable. Standard 180 sec for 730 m tape
(2400 ft)
Start time: 15 ips approx 0.6 sec
30 ips approx 1.2 sec
Timer accuracy: +/- 0.1 %
Signal inputs: Balanced and floating
Input impedance 10 kOhms
-6 dBm to +24 dBm input level (adjustable)
to produce 510 nWb/m tape flux
Signal outputs: Balanced and floating
Output impedance 40 ohms max
510 nWb/m tape flux causes output level
0 to +8 dBm (adjustable)
Max unclipped output level +24 dBm into 200 ohms
Sync output: Level: +O, -3 dB. Non-floating. Min load 10 kOhms
Equalization: 15 ips NAB or CCIR, 30 ips 17.5 µ sec (AES)
Bias frequency: 100 kHz
1977-05-01 TR532 2.1

Signal to noise 15 ips: Peak weighted RMS unweighted
ratio: 16 track, rec-repro 58 dB 62 dB
16 track, rec-sync 58 dB 60 dB
24 track, rec-repro 56 dB 61 dB
24 track, rec-sync 56 dB 58 dB
30 ips:
16 track, rec-repro 58 dB 62 dB
16 track, rec-sync 58 dB 60 dB
24 track, rec-repro 56 dB 61 dB
24 track, rec-sync 56 dB 58 dB
All values refer to 510 nWb/m tape flux. Peak
weighted values measured with weighting curve
according to DIN 45.505. RMS unweighted values
measured with bandpass filter 30 Hz - 15 KHz.
Frequency response: 15 ips 30 ips
Rec-repro 60 - 16000 Hz ±1 dB 60 - 18000 Hz ±1 dB
30 – 20000 Hz +1/-3 dB 50 – 20000 Hz +1/-3 dB
Rec-sync 30 – 18000 Hz +1/-3 dB 50 - 18000 Hz +1/-3 dB
Crosstalk: 16 track - less than 50 dB/1 kHz
24 track - less than 46 dB/I kHz
Erase efficiency: 75 dB minimum at 1 kHz
Power requirements: Standard 210-240 V ±10 %/50 Hz/600 VA max
Optional 110 V - 120 V - 240 V/50-60 Hz
Working conditions: Ambient temperature range: +10 - +40°C
Humidity range: 30 – 90 %
Dimensions: 73 cm wide x 56 cm deep x 91 cm high
Inc. Vu-meter console: 16 track - 127 cm high
24 track - 137 cm high
Lyrec Manufacturing A/S reserves the right to introduce modifications
and improvements from time to time without prior notice. Small
differences in component values or circuitry may be found between
diagrams and actual electronics. If these changes are of major
importance for performance, revised diagrams will be forwarded when
printed.
Only figures with tolerances or limit can be considered guaranteed
data. Figures without tolerances are informative data, without
guarantee. (IEC 278, section 5.4 note.)
No part of this manual may be reproduced without written consent.
1977-05-01 TR532 2.1 cont.

2.2 DIMENSIONS
Remote control type RCU Remote control type TPC
1977-05-01 TR532
1977-05-02 2.2

Remote Control type ATC
1984-05-17 TR532 2.2

2.3 LIST OF ACCESSORIES
1 Tool case, plastic
1 Set of Allen keys 1.5, 2, 2.5, 3 mm
1 Allen key 3 mm x 90 mm
1 Allen key 2 mm x 90 mm
1 Screwdriver 80 mm x 2 mm, Belzer
1 Oilcan, mini Belzer, with Esso NUTO HP 32
1 Bottle of cleaning fluid
1 Bag of Q-tips
2 Double air filter
5 Telephone lamp 36 V, 50 mA
1 Minilamp 28 V, 40 mA
4 Fuse 2 A slow
2 Fuse 4 A slow
2 Mains cable, 3 m
1 Test cable 1.5 m coax with jack and banana plug
1 Manual
1 Dust cover
1 Remote control unit extension card
For each 8-track unit;
4 12 pole connector Siemens C42334-A41-A3
4 Connector housing Siemens C42334-A228-A842
2 9 pole connector Cannon DE-9P
2 Connector housing Cannon DE51218-1
1977-05-01 TR532

2.3 LIST OF ACCESSORIES
969002 1Tool case, plastic
969011 1Set of Allen keys 1.5, 2, 2.5, 3 mm
969016 1Allen key 3 mm x 90 mm
969017 1Allen key 2 mm x 90 mm
969020 1Screwdriver 80 mm x 2 mm, Belzer
969036 1Oilcan with Esso NUTO HP 32
501009 2Double air filter
961701 5Telephone lamp 36V, 5OmA
922134 2Lamp EAO 11.903.0 for ATC
961711 1Minilamp 28V, 4OmA
961920 4Fuse 2A slow
961941 2Fuse 4A slow
961910 2Fuse 1A slow
999999 1Mains cable 3 m
501027 1Test cable 1.5 coax with jack and banana plug
969044 1Manual
969046 1Manual for ATC
501028 1Extender print for AM77
953701 125 pole connector Cannon DB25P - male
953702 1Connector housing Cannon DB115339-2
999999 4Allen screw M3 x 8 ULS
999999 4Allen screw M4 x 10 ULS
999999 24 Screw M3 x 10
869583 1Brake band
For each 8 track unit;
954409 412 pole connector Siemens C42334-A41-A3
954408 4Connector housing Siemens C42334-A228-A842
953743 19 pole connector Cannon DE-9P
953746 1Connector housing Cannon DE51218-1
1984-06-12 TR532 2.3

GENERAL DESCRIPTION
3.1 SERVICE MANUAL
This manual covers the description, installation, operation and
service instructions for the Lyrec TR532-series of 2" and 1"
professional tape recorders. The available configurations are the
following
- TR532-8. 1" 8 track recorder
- TR532-16, 2" 16 track recorder
- TR532-24, 2" 24 track-recorder
It is possible to change these configurations in the field by means of
interchangeable head blocks and rollers.
3.2 TAPE DECK
The TAPE DECK has a very compact and clean layout. The head screen is
easily removable without any tools. Tape path is simple and tape is
easy to thread.
The nominal tape speeds are controlled by a DC-motor which may be set
internally to two fixed nominal speeds or varied over a wide range.
It may also be controlled from an external source enabling two or more
machines to be syncronized together via external equipment (i.e.
MagLink, Minimag or similar).
Tape tension on either side of the capstan is maintained within
working limits by servo controlling the wind motors by way of their
respective tape tension sensing arm assemblies.
The tape transport function controls are situated along the front of
the TAPE DECK towards the left. Normal functions include START, STOP
and RECORD buttons, all illuminated, as also the WIND button which
activates the WIND SPEED CONTROL placed in the middle of this group.
This control allows for infinitely variable speed increments in the
wind mode in either direction.
Near the pinch roller is the EDIT CONTROL. This prevents the pinch
roller to press the tape against the capstan but allows all other
functions. In this way spot erase of single channels may be effected
by hand.
At the extreme right of the front edge of the tape deck is the
illuminated MAINS on/off button, which also carries a safety feature.
It will not disconnect the machine until the STOP MODE has been
reached. In this way tape spills and accidental recording
interruptions are avoided.
1977-05-01 TR532 3.2

Close to the MAINS button are the two speed selection buttons, 15 and
30 ips. When power has been switched off the tape recorder will always
come back to the previously selected speed.
The power supplies for the machine are housed below the tape deck,
together with the servo electronics.
3.3 RECORD/PLAYBACK AMPLIFIERS AM 77
The RECORD/PLAYBACK AMPLIFIERS are housed in 8-track units below the
mechanical section of the machine. One complete RECORD/PLAYBACK
AMPLIFIER AM 77 is contained on a single printed board. All necessary
adjustments are made from the front and each amplifier is an easily
replaceable plug-in unit.
Equalization amplifiers, level control and bias level control are
contained on plug-in boards on the AM 77. This allows easy changing
from standard version to any other version by plugging in the correct
equalization boards.
Furthermore there is a possibility of letting the tape speed
pushbuttons control the amplifiers only. In this way a 15 ips CCIR -
15 ips NAB recorder is obtained.
For purposes where it is necessary to change bias level on a few
tracks on a prerecorded tape, a switch is installed on each amplifier.
An arbitrary bias value may then be set without disturbing the two
normal bias settings.
3.4 VU-METER PANEL
The VU-METER PANEL is mounted at the rear top of the TAPE DECK. It may
be mounted at any remote location if the user so desires. Each VU-
METER may be calibrated over a wide range of levels to suit individual
studio requirements.
3.5 CONSOLE
The TAPE DECK, RECORD/PLAYBACK AMPLIFIERS and VU-METER PANEL are
mounted in a solid framework on large casters which aid moving the
machine around. The three sections are electrically interconnected
with cable harnesses which are long enough to allow good service but
which are placed at the rear of the machine where they are out of the
way in normal use.
1977-05-01 TR532 3.5

All heat producing elements are located at the rear of the machine so
that the sides may be placed in direct contact with other equipment,
thereby taking up a minimum of control room space.
Low-noise fans further enhance the temperature safety margin.
3.6 REMOTE CONTROL UNIT
A normal feature of the machine is a very complete REMOTE CONTROL
UNIT; facilities include the possibility of switching the output
signal of each channel between the LINE input, the SYNC output and the
PLAYBACK output. It is possible to drop in or out of record on any
individual channel. A SOLO button is also provided for each channel.
The switching logic for these functions is so designed as to simplify
the operators requirements in so far as routing systems and working
requirements are concerned. This allows the use of simpler desks or
less tiring work routines.
Further features of the REMOTE CONTROL UNIT include VARISPEED
continuously covering the range 7.5 to 60 ips. Actual tape speed can
be monitored by the TAPE TIMER DISPLAY enabling any VARISPEED setting
to be repeated accurately. A SEARCH FUNCTION is provided whereby the
machine can rewind to any pre-selected position of the tape, with no
overshoot.
The normal tape transport functions START, STOP, RECORD and FAST WIND
modes are also present in the REMOTE CONTROL UNIT. There is a socket
on the rear of the box enabling a REMOTE TIMER DISPLAY to be installed
up to 10 meters away from the box, in any convenient control room
location.
1977-05-01 TR532 3.6

4. INSTALLATION
4.1 UNPACKING
The machine has been packed in a container specially designed for air
freight. Inspect it visually and if any damage is observed notify your
carrying agent immediately. If all is normal unpack the machine
carefully and retain the packing material for possible future use.
Remove the front and side covers of TAPE DECK and inspect the SERVO
CONTROL print boards; they should be firmly seated in their positions,
and all connectors should be likewise.
Inspect the TAPE DECK and check that none of the metal parts that come
in contact with the tape are damaged in any way.
Check the HEAD BLOCK and particularly the front of the head stacks.
Rubber rollers should be smooth and all metal rollers should move
freely; tension arms should feel slightly hard because of the damping
cylinders but movement should be smooth, with no indication of
friction or roughness.
Check the seating of the individual RECORD/PLAYBACK AMPLIFIERS
modules.
Refer to the CONNECTOR TABLE below and check that all factory wired
plugs and connectors are properly in place.
Proceed likewise with the REMOTE CONTROL UNIT and the VU-METER PANEL.
Place the VU-METER PANEL in position and secure it with the four
screws provided.
4.2 INTERCONNECTION
After checking the above refer to the CONNECTOR TABLE again and the
CONNECTOR DIAGRAMS and wire up the mains connectors. BE SURE YOUR
LOCAL MAINS VOLTAGE IS COMPATIBLE WITH THE MACHINE. BE SURE THAT YOU
COMPLY WITH YOUR LOCAL REGULATIONS AND PAY PARTICULAR ATTENTION TO THE
EARTHING CONNECTIONS. Then wire up all the LINE IN and LINE OUT
connectors the RECORD INDICATION connectors, where applicable, and the
SYNC OUTPUT connectors.
Connect the REMOTE CONTROL UNIT umbilical to the connector on the rear
of the tape deck.
CAUTION: THIS CONNECTION SHOULD NOT BE MADE OR BROKEN WITH EITHER
MACHINE OR THE REMOTE CONTROL UNIT OR BOTH SWITCHED ON.
DAMAGE TO THE DIGITAL CIRCUITRY WILL ENSUE.
This completes the installation procedure.
1977-05-01 TR532 4.2

CONNECTOR TABLE
NO Designation Connector
type
Mating connector
from/to Mating connector
wired by
1 LINE IN 1-4
(5-8)(9-12)(13-
16) (17-20)(21-
24)
AFrom external
signal source User
2 LINE OUT 1-4
(5-8)(9-12)(13-
16) (17-20)(21-
24)
ATo external
equipment USER
3 Record
Indication BTo noise reduction
equipment
USER
4 SYNC OUT BTo external
equipment USER
5 POWER CPower supply in
tape deck FACTORY
6 VU-METERS DTo VU meter
panel FACTORY
7 REMOTE CONTROL
ADTo remote control unit FACTORY
8 REMOTE CONTROL
BCTo remote control unit FACTORY
9 ERASE HEAD ETo erase head FACTORY
10 RECORD HEAD ETo record head FACTORY
11 PLAYBACK HEAD ETo playback head FACTORY
Electronics
12 220 V 50 Hz GFrom mains
supply FACTORY
13 Ext. motor
control HFrom external speed control
equipment
USER
14 Remote control
Tape deck IFrom remote control unit FACTORY
Tape Deck
15 220 V 50 Hz GFrom mains
supply FACTORY
16 Slave display JTo slave display
USER/FACTORY
Remote control
1977-05-01 TR532

CONNECTOR TYPES
Type Chassis Connector Mating Connector
ASiemens C42334-A41-A4 with
tray C42334-A228-C92 Siemens C42334-A41-A3 with shell C42334-A228-A842
BCannon DE-9S Cannon DE-9P
with Shell Cannon DE51218-1
CCannon DB-25P Cannon DB25S with shell
DB115339-2
DCannon DB25S Cannon DB25P with shell
DBI15339-2
ESiemens A42334-A44-A4
with tray A42334-A228-C95 Siemens A42334-A44-A3 with shell A42334-A228-A845
FSiemens A42334-A44-A3
with tray A42334-A228-C95 Siemens A42334-A44-A4 with shell A42334-A228-A845
GOtto Heil 6061-1 Otto Heil 4010
HAmphenol-Tuchel T3262 Amphenol-Tuchel T3261/1
IAmphenol-Tuchel 2071-030
with tray 1136-002 Amphenol-Tuchel 2070-030 with shell 1124-001
JAmphenol-Tuchel 2009-012
with tray 1148-002 Amphenol-Tuchel 2008-012 with shell 1122-001
1977-05-01 TR532

Rear view, connector numbers shown without cables
1977-05-01 TR532

CONNECTOR DRAWINGS
No. I LINE IN 1-4
(5-8, 9-12, 13-16, 17-20,
21-24)
(all grounds internally
connected)
No. 2 LINE OUT 1-4
(5-8, 9-12, 13-16, 17-20,
21-24)
(pins 2a, 2b, 5a, 5b not
connected)
No. 3 RECORD INDICATION 1-8
(9-16)(17-24)
When a channel is in RECORD,
output will be +24 V, other
wise a high impedance to ground.
Ext. load min 3 Kohms.
No. 4 SYNC OUT 1-8
(9-16, 17-24)
Ext. load min 10 kOhms
No. 13 Ext. Motor Control
Note: Do not use this circuit
simultaneously with Varispeed
from Remote Control Unit.
No. 12, 15
All connectors are cablepart seen from solderside.
1977-05-01 TR532

4.5 TRANSPORTATION
The Lyrec TR532 can be transported in a car or van. During transport
it can either stand up or be laid down on it's front. For this purpose
the factory has developed a special transport frame that fits the
front of the recorder (see section 6.7).
Move the recorder close to the back of the vehicle and place the
transport frame on the front of the machine. Tilt the recorder into
place and slide it in. This operation can easily be made by two
people.
1977-05-01 TR532 4.5

5. OPERATION
5.1 SWITCHING ON
Connect both line cords to the appropriate voltage and press the MAINS
button on the tape deck. Select the desired tape speed. The MAINS, the
STOP and one of the speed buttons on the TAPE DECK and the STOP button
on the REMOTE CONTROL UNIT should light up. The ventilation fans
should start running and the VU-meters should light up (if of
illuminated type).
Switch on the REMOTE CONTROL UNIT; the power switch is on the rear
panel. All channels should illuminate their SAFE and SYNC LED'S. The
TAPE TIMER should indicate 00.00 and the speed should be set at
nominal speed, whichever has been selected.
TAPE DECK
5.2 LOADING
Place an empty reel and a full reel on the appropriate hubs. The
knurled knob on the top of the hub should be turned clockwise to lock
the reels in place. Refer to drawing No. 5.02 and thread the tape
through the tape path. Check the height of the tape, and if necessary
adjust it. See section 7.1 for this adjustment.
5.3 PLAY MODE
Press START button on the TAPE DECK or on the REMOTE CONTROL UNIT.
Both buttons should illuminate; the PINCH ROLLER and GUIDE ROLLER
should pull in, placing the tape in contact with the heads and the
capstan, which will cause the tape to move forward at its nominal
speed.
On the REMOTE CONTROL UNIT the timer will begin to show seconds and
then minutes of elapsed time. Select REPRO on the REMOTE CONTROL UNIT
on those channels from which the tape playback signal is to be
monitored.
5.4 RECORD MODE
Select the channels to be recorded on the REMOTE CONTROL UNIT by
pressing the READY buttons on the appropriate channels; the red LED's
will immediately begin flashing to indicate that these channels are
ready to record. On the same channels the green SAFE LED will go off.
Press RECORD and START buttons simultaneously either on the TAPE DECK
or on the REMOTE CONTROL UNIT; the same mechanical functions as in the
play mode will occur. On the REMOTE CONTROL UNIT the red flashing
LED's will illuminate steadily indicating RECORD MODE on those
channels.
1977-05-01 TR532 5.4

Drawing No. 5.02, Tape path
1977-05-01 TR532