Teac GF-600 User manual

SERVICE MANUAL
GF-600
Compact Hi-Fi Stereo System
NOTES CONTENTS
●PC boards shown are viewed from parts side. 1 SAFETY INFORAMTION………………………… 2
●Parts marked with * require longer delivery time. 2 SPECIFICATIONS………………………………… 3
3 ADJUSTMENT AND CHECKS………………….. 4●The parts with no reference number or no parts number in the
exploded views are not supplied.
3-1 AMPLIFIER SECTION……....…………………. 4
3-2 TUNER SECTION…………………….………… 5●As regards the resistors and capacitors, refer to the circuit
diagrams contained in this manual.
3-3 CD PLAYER SECTION……………...…………. 7
Parts marked with this sign are safety critical 3-4 CASSETTE DECK SECTION…………………. 8
components. They must be replaced with identical 3-5 TURNTABLE SECTION……………………..…. 10
components – refer to the appropriate parts list and 4 EXPLODED VIEWS AND PARTS LIST………… 11
●
ensure exact replacement.
5 PC BOARDS AND PARTS LIST………………… 21
●Parts of [] mark can be used only with the version designated. 6 WIRING DIAGRAM……………………………….. 28
●[US]:U.S.A.[C]:CANADA[SA]:SOUTH AMERICA

GF-600
1 SAFETY INFORMATION
SAFETY INFORMATION
This product has been designed and manufactured according to FDA regulations “title 21, CFR, chapter 1, subchapter J based
on the Radiation Control for Health and Safety Act of 1986” and is classified as class 1 laser product. There is no hazardous
invisible laser radiation during operation because invisible laser radiation emitted inside of this product is completely confined in
the protective housings. The label required in this regulation is shown below.
●CAUTION
USE OF CONTROLS OR ADJUSTMENT OR PERFORMANCE OF PROCEDURES OTHER THAN THOSE SPECIFIED HERE
IN MAY RESULT IN HAZARDOUS RADIATION EXPOSURE.
Optical pickup:
Type : SLD104u
Manufacturer : SONY Corporation
Laser output : Less than 0.5mV on the objective lens
Wavelength 760 – 800 nm
2

GF-600
2 SPECIFICATIONS
AMPLIFIER Section SPEAKER SYSTEM Section
Output Power…………………...………………….……..15W+15W Type.…………………………….……………….2-way bass reflex
Input Sensitivity………………..…………….………….…….220mV Impedance…………….……………………….……….…..6 ohms
Frequency Response………………………...….…50 to 20,000 Hz
GENERAL
Power Requirements…..…120V, 60Hz (U.S.A./Canada model)
TUNER Section (FM) 120V/230V AC, 50-60Hz (General export model)
Frequency Range………………………..…...87.50 to 108.00 MHz Power Consumption………...……………..……..……..……50W
Sensitivity (S/N30dB)………..……………….………...……20dBµV Dimension ( W x H x D )
Main Unit…………………….……..…….395 x 379 x 277 mm
(15-9/16” x 14-15/16” x 14-13/16”)
TUNER Section (AM) Speaker….…20 x 172 x 377 mm (7-7/8” x 6-3/4 x 14-13/16”)
Frequency Range…………………………….……530 to 1710 kHz Weight
Sensitivity (S/N20dB)………..………………..…….....…60dBµV/m Main Unit………………..…………………...11.6 kg (25-1/2 lb)
Speaker………………..…………..….…2.8 kg (6-3/16 lb ) x 2
CD PLAYER Section
Frequency Response…………………...…20 to 20,000Hz (±1dB) Standard Accessories
Signal-to-Noise Ratio……….………….……………….…….. 55dB Remote Control Unit (RC-905) x 1
Wow and Flutter……………………………...……...Unmeasurable 45 RPM adaptor x 1
Owner’s Manual x 1
Warranty Card x 1
CASSETTE DECK Section
Track System……………..……………..4 track, 2 channel Stereo
Tape Speed…………………….….……..…..…………..4.8cm/sec
●Design and specifications are subject to change without
notice.
Wow and Flutter……………….…………….….….0.35% (WRMS) ●Illustrations may differ slightly from production models
Frequency Response……………..…………....….100 to 8,000 Hz
Signal-to-Noise Ratio………..………………………….……...35dB
RECORD PLAYER Section
Motor…………………………………………..….…DC servo motor
Drive System………………………………..…….….……Belt Drive
Speed….………..………………..……33-1/3 rpm, 45 rpm, 78 rpm
Wow and Flutter….……………………....less than 2.5% (WRMS)
S/N ratio…………….……………….............…......More than 50dB
Cartridge type…………………….…..…Ceramic Stereo Cartridge
3

GF-600
3 ADJUSTMENT AND CHECKS
●0 dB is referenced to 1.0V.
●Load impedance:
SPEAKERS: 6 ohm (40W or more)
PHONES: 1k ohm (1/4W)
●Specified input level: -3dB (AUX)
●VOLUME position: VOL 20
●Unless specified otherwise,measurements are made in PHONES jack
3.1 AMPLIFIER SECTION
ITEM INPUT SIGNAL
(AUX IN)
SPECIFICATIONS REMARKS
1.AUX input sensitivity 1KHz /-3dB -4 +/-3dB Referenceoutputlevel
2.Harmonic distortion 1KHz /-3dB 1.0%orless
3.Frequency response 40Hz,100Hz,20kHz
40Hz: 9 +/-3dB
100Hz: 7 +/-3dB
20kHz: 3 +/-3dB
Reference level:1kHz
4.S/N ratio No signal 50dB or better
Ratio of reference output
level to noise
5.Maximumoutputpower 1KHz THD:10%orless VOLUME:MAX
4
Oscillator
AUX IN
L
R
GF-600
PHONES
SPEAKERS
6 ohm
1k ohm
1k ohm
S1
Distorion Anal
y
ze
r
AC voltmeter
Oscilloscope
Fig.3-1 Basic test setup
6 ohm

GF-600
3-2 TUNER SECTION
3-2-1 AM TUNER
SIGNAL GENERATOR SETTING
ITEM
Audio Modulation Frequency Output
GF-600 ADJUSTMENTS MEASURING
POINTS,RESULT
1710kHz L5 VT 8.0V
1.Voltage
adjustment
530kHz Check VT 0.9V
2.IFT
adjustment
1kHz 30% 600kHz 76 dBuV 600kHz L4
Maximum output
level
1kHz 30% 600kHz 76 dBuV 600kHz Ant coil
Maximum output
level
3.Tracking
adjustment 1kHz 30% 1400kHz 76 dBuV 1400kHz TC2 Repeat
step 3
Maximum output
level
5
SPEAKER
JK2 SW1
AUX INPUT
JK1
IC6
IC5
IC
IC3
IC2
VR1
IC1
L1
L2
L
5
FIG 3-2 Adjustment locations
L3
L8
A
M
A
N
T
IC7
C304
C303 Q31
T
C
4
T
C
2
GF-600 MAIN PCB
L4

GF-600
3-2-2 FM TUNER
SIGNAL GENERATOR SETTING
ITEM
Audio Modulation Frequency Output
GF-600 ADJUSTMENTS MEASURING
POINTS,RESULT
108.0MHz L2 VT 8.0V
1.Voltage
adjustment
87.5MHz Check VT 2.4V
2.IFT
adjustment
1kHz 22.5kHz 90.1MHz 22.5 dBuV 90.1MHz L1
Maximum output
level
1kHz 22.5kHz 90.1MHz 76 dBuV 90.1MHz L3
Maximum output
level
3.Tracking
adjustment
1kHz 22.5kHz 106.0MHz 76 dBuV 106.0MHz
TC4 Repeat
step 3
Maximum output
level
6
AM signal generator
AM
GF-600
PHON
1k ohm
1k ohm
S1
Fig.3-3
AM Loop
Antenna
60cm
AC voltmete
r
FM signal generator
FM
GF-600
PHONES
1k ohm S1
AC voltmete
r
75 ohm
Fig.3-4 1k ohm

GF-600
3-3 CD PLAYER SECTION
3-3-1 ADJUSTMENT
●Set all of the adjustment volumes to the center position.
●Use an oscilloscope that has a bandwidth greater than 40MHz.
●Use MCD-111 test disc.
A. EF balance adjustment
1. Connect the probe to P1 or J126(TE) and the probe ground to P2 or J154(VC).
2. In the search mode,and adjust VR101 so that the upper and lower.
amplitudes of the waveform become equal above and below 0V.
B. RF level adjustment
1. Connect the probe to P3 or J143(RF) and the probe ground to P2 or J154(VC).
2. In the play mode,and adjust VR102 so that the waveform on the oscilloscope
becomes maximum.
7
AB
0V A=B
IC105
IC10
IC10
J
154
IC10 VR101
P2
P1
J
126
IC10
P3
J
143
VR102
IC10
Maximum

GF-600
3-3-2 Audio performance
DISC
ITEM
TRACK No. FREQUENOY/LEVEL
SPECIFICATIONS REMARKS
1.Output level 2 1KHz/0dB 6 ±3dB
2.Harmonic
distortion 2 1KHz/0dB 0.5% or less
3.Frequency
response 4,6 100Hz,20KHz/0dB +1, -3dB
Reference level:
1KHz
4.S/N ratio 7 -∞dB 50dB or better
3-4 CASSETTE DECK SECTION
Before performing adjustments and checks clean and demagnetize the entire tape path.
3-4-1 Mechanical performance
8
ITEM TEST TAPE SPECIFICATIONS
1.Wow and
flutter
(playback
method)
MTT-111N 0.35% or less
(JIS WTD)
2.Tape speed
deviation
MTT-111N
3000 ±120Hz
(Adjustment
points: VR1)
3.Tape speed
drifting
MTT-111N Within ±90Hz
GF-600
PHONE
Wow & Flutter Meter
Frequency counter
L
R
Fig.3-6

GF-600
3-4-2 PLAYBACK PERFORMANCE
ITEM TEST TAPE PLAYBACK
FREQUENCY ADJUSTMENTS MEASURING POINTS,RESULT REMARKS
MTT-25702 8KHz Azimuth screw Maximum output
level at L/R-ch
1.Head azimuth
adjustment MTT-25702 250Hz Check Phase:within 45°
(Fig.3-8)
Fig.3-7
2.Playback
output level MTT-150C Dolby B type
tone Check -4 ±3dB Reference output level
3.Playback
frequency
response
MTT-25702 8KHz Check ±5dB Reference
level:250KHz
4.Playback S/N
ratio
MTT-5513
Playback the
leader tape
portion
Check 40dB min
Ratio of reference
level to noise
(in phase)ter
3-4-3 Recording performance
ITEM TEST TAPE INPUT SIGNAL
(AUX in) ADJUSTMENTS MEASURING
POINTS,RESULT REMARKS
1.Bias osc
frequency
MTT-5513 Check 85KHz
2.Total
harmonic
distortion
MTT-5513
MTT-5563
400Hz/-6dB Check 3.0% or less
MTT-5513 Check +3 to 4dB
3.Overall
frequency
response MTT-5563
8KHz/-28dB
Check ±7dB
Reference level:
250Hz
4.Overall
S/N Ratio
MTT-5513 NO signal Check 35dB min Ratio of reference
level to noise
9
GF-600
PHONES
S1
AC voltmeter
Oscilloscope
Fig.3-7 Test setup for azimuth check
HOR
VER
Fig.3-8 Confirming phase relationship
0°
(in phase)
45°90°135°180°
(out of phase)

GF-600
3-5 TURNTABLE SECTION
TURNTABLE
HP-4005
ITEM
Number.
Adjustment
point
Speed Adjustment
Wow & Flutter
33 NO.3 SFR502 3000Hz
±30Hz < 0.35%
45 NO.4 SFR501 3000Hz
±30Hz ---
78 NO.4 SFR503 5200Hz
±30Hz ---
10
SPEAKER
JK2 SW1
AUX INPUT
JK1
IC6
IC5
IC
IC3
IC2
VR1
IC1
L1
L2
L
5
FIG 3-9 Adjustment locations
L3
L8
A
M
A
N
T
IC7
C304
C303 Q31
T
C
4
TC2
GF-600 MAIN PCB
L4
V
V
V
CN501 CW503
CN502
SFRN503
SFRN501
SFRN502
FIG 3-10

11

GF-600
EXPLODED VIEW-1
REF. NO PARTS NO. DESCRIPTION REMARKS
1
–
1 010-G6000000 NAME PLATE
1 – 2 001-G6000000 FRONT PANEL
1 – 3 007-G6000100 CASS WINDOW(A)
1 – 4 005-G6000000 CASS DOOR(A)
1 – 5 005-28000001 CASS HOLDER
1 – 6 007-G6000200 CASS WINDOW(B)
1 – 7 005-G6000100 CASS DOOR(B)
1 – 8 100-G6002030 HEAD PHONE/SENSOR PCB ASS’Y
1 – 9 007-G6000300 REMOTE COVER LENS
1 – 10 021-43010033 SCREW Ø3x10MM,PWT BLK HD(Ø=11.5MM)
1 – 11 010-G6000200 KEY RING(L)
1 – 12 008-0GP18000 GEAR DUMPER ASS’Y
1 – 13 007-G6000000 LCD DISPLAY WINDOW
1 – 14 001-G6002040 LCD ORNAMENT PANEL
1 – 15 021-13008032 SCREW Ø3x8MM PT ZMC HD
1 – 16 004-G6000700 CD OPEN/CLOSE KNOB
1 – 17 100-G6002040 CD OPEN/CLOSE PCB ASS’Y
1 – 18 021-13010032 SCREW Ø3x10MM PT ZMC HD
1 – 19 038-201831C0 CASSETTE MECHA
1 – 20 021-43008052 SCREW Ø3x8MM PWB ZMC HD
1 – 21 010-G6000100 KEY RING(R)
1 – 22 031-28000110 CASS SPRING
1 – 23 004-G6000200 CD CONTROL KNOB
1 – 24 004-G6000600 FUNCTION KNOB
1 – 25 004-G6000500 BBS/DOUBLE SPEED KNOB
1 – 26 004-G6000100 DISPLAY KNOB
1 – 27 004-G6000300 DISC KNOB
1 – 28 100-G6002020 FRONT PCB ASS’Y
1 – 29 004-G6000400 POWER KNOB
1 – 30 004-G6000000 VOLUME/TUNER KNOB
1 – 31 012-02120612 PVC WASHER Ø12x Ø6.1xT0.2MM
1 – 32 009-28000000 SWITCH LEVER
1 – 33 031-28000010 VOLUME SPRING
1 – 34 010-SD900800 TUNER SPRING COVER
1 – 35 010-SD900700 VOLUME SPRING COVER
1 – 36 021-42606032 SCREW Ø2.6x6MM PWT ZMC HD
1 – 37 004-29301801 CASS KNOB 5 R<C/LEVER R5>
1 – 38 004-29301701 CASS KNOB 4 R<C/LEVER R4>
1 – 39 004-29301601 CASS KNOB 3 R<C/LEVER R3>
1 – 40 004-29301500 CASS KNOB 2 R<C/LEVER R2>
1 – 41 004-29301401 CASS KNOB 1 R<C/LEVER R1>
1 – 42 004-29301301 CASS KNOB 6 L<C/LEVER L6>
1 – 43 004-29301201 CASS KNOB 5 L<C/LEVER L5>
1 – 44 004-29301101 CASS KNOB 4 L<C/LEVER L4>
1 – 45 004-29301001 CASS KNOB 3 L<C/LEVER L3>
1 – 46 004-29300901 CASS KNOB 2 L<C/LEVER L2>
1 – 47 004-29300801 CASS KNOB 1 L<C/LEVER L1>
1 – 48 009-28000100 LCD HOLDER
12

13

GF-600
EXPLODED VIEW-2
REF. NO PARTS NO. DESCRIPTION REMARKS
2
–
1 FRONT PANEL ASS’
Y
2 – 2 011-28000600 PANEL BKT
2 – 3 006-G6000000 CD DOOR
2 – 4 022-44022033 SCREW Ø4x22MM PWM BLK HD
2 – 5 022-92006033 SCREW Ø2x6MM CM BLK HD
2 – 6 015-G6001000 OBSTRUCT PVC
2 – 7 024-23010032 SCREW Ø3x10MM BA ZMC HD
2 – 8 011-G6000100 CD FRONT BKT R
2 – 9 022-43010033 SCREW Ø3x10MM PWM BLK HD
2 – 10 039-29303330 CD DECK ASS’Y
2 – 11 011-G6000200 CD FRONT BKT L
2 – 12 018-OLT98000 HEAT SINK (FOR CD PCB)
2 – 13 100-29302060 CD PCB ASS’Y
2 – 14 021-13008032 SCREW Ø3x8MM PT ZMC HD
2 – 15 011-G6000300 CD BACK BKT
2 – 16 021-13010032 SCREW Ø3x10MM PT ZMC HD
2 – 17 011-28000200 HOLDER LEG A
2 – 18 016-G6000100 INNER BOTTOM BOARD
2 – 19 011-28000300 HOLDER LEG B
2 – 20 011-28000401 HOLDER BAR
2 – 21 022-23006032 SCREW Ø3x6MM BM ZMC HD
2 – 22 100-G6002010 10W MAIN PCB ASS’Y
2 – 23 011-28000500 PCB HOLDER BKT
2 – 24 018-G6000000 POWER IC HEAT SINK
2 – 25 011-28001100 STRONG BKT
14

15

GF-600
EXPLODED VIEW-3
REF. NO PARTS NO. DESCRIPTION REMARKS
3
–
1 FRONT PANEL ASS’
Y
3 – 2 016-G6000000 WOODEN CABINET ASS’Y
3 – 3 004-M9700000 SPEED SW. KNOB
3– 4 010-M9700000 SPEED SW. COVER
3 – 5 100-F1802030 PHONO SPEED SW. PCB ASS’Y
3 – 6 022-12604032 SCREW Ø2.6x4MM PM ZMC
3 – 7 010-G6000300 PLAYER COVER
3 – 8 024-33012033 SCREW Ø3x12MM KA BLK HD
3 – 9 021-24014033 SCREW Ø4x14MM BT BLK HD
3 – 10 011-F1800500 SIDE STAY ASS’Y
3 – 11 024-33012033 SCREW Ø3x10MM KA NI HD
3 – 12 024-23008031 SCREW Ø3x8MM BA NI HD
3 – 13 084-G6000200 POWER TRANSFORMER 10W 120V/60Hz
084-G6000700 POWER TRANSFORMER 10W 120V/230V 50 Hz
3 – 14 011-02000800 POWER TRANS PLATE
3 – 15 011-02001500 AC CORD HOLDER
011-G6000400 AC CORD HOLDER ( NEW )
3 – 16 022-44022033 SCREW Ø4x22MM PWM BLK HD
3 – 17 037-KRA20100 RUBBER FOOT
3 – 18 024-24010033 SCREW Ø4x10MM BA BLACK HD
3 – 19 087-00000007 AC CORD “UL”,L=2000MM.
3 – 20 016-G6000200 BACK BOARD
3 – 21 021-43012033 SCREW Ø3x12MM PWT BLK HD
3 – 22 011-28000000 WOODEN BKT
3 – 23 048-0G600010 SPEAKER BOX ASS’Y
3 – 24 037-F3000100 TOP COVER CUSHION
3 – 25 010-G6000500 SPEAKER NAME PLATE
3 – 26 022-44014033 SCREW Ø4x14MM PWM BLK HD
3 – 27 022-44010033 SCREW Ø4x10MM PWM BLK HD
3 – 28 022-44018033 SCREW Ø4x18MM PWM BLK HD
3 – 29 040-01000311 PLAYER ASS’Y( 3 SPEED DC=9V )
3 – 30 024-43112033 SCREW Ø3.1x12MM PWA BLK HD
3 – 31 011-F1001040 SPEED SW. BKT
3 – 32 021-13010032 SCREW Ø3x10MM PT ZMC HD
16

17

GF-600
EXPLODED VIEW-4
REF. NO PARTS NO. DESCRIPTION REMARKS
4
–
1 020-10000200 E-RING ( 5.0M/M )
4 – 2 037-10000000 RUBBER A
4 – 3 010-10000300 PLATTER
4 – 4 033-17001006 BELT Ø170 x 0.6 x 5MM
4 – 5 014-01000000 PLATTER SHAFT
4 – 6 012-02116782 PVC WASHER Ø7.8 x Ø11.6 x T0.2
4 – 7 020-10000000 SHAFT SET
4 – 8 014-01000001 SHAFT A
4 – 9 010-10000400 TONE ARM SET
4 – 10 011-10000200 TONE ARM
4 – 11 021-22005031 SCREW Ø2 x 5 BT ZMC HD
4 – 12 011-10000100 GROUND SHEET
4 – 13 010-10000500 HEAD SHELL
4 – 14 055-01000000 STYLUS ASS’Y
4 – 15 010-10000100 LIFTER
4 – 16 010-10000200 PICK-UP CRAMPER
4 – 17 004-10000000 AXLE KNOB
4 – 18 014-01000002 CUTTING LEVER
4 – 19 015-10000000 COVER ( BLACK )
4 – 20 021-43005012 SCREW Ø3x5MM PWT ( W=8 ) ZMC
4 – 21 031-10000320 SPRING C ZMC
4 – 22 063-01000400 LEAF SWITCH
4 – 23 021-12008012 SCREW Ø2x8 PT ZMC
4 – 24 010-10000600 CAPSTAN
4 – 25 100-F1802020 PHONO SPEED PCB ASS’Y
4 – 26 021-13008012 SCREW Ø3x8 PT ZMC
4 – 27 031-10000010 SPRING ( Ni )
4 – 28 010-10000000 ROTARY SHAFT
4 – 29 019-01000021 BOLT A NI L=39MM
4 – 30 025-01000002 FIX SCREW ZMC
4 – 31 037-10000100 RUBBER B
4 – 32 019-01000011 BOLT B BLACK L=39MM
4 – 33 026-12504022 SCREW Ø2.5x4MM PTT ZMC+SW
4 – 34 031-10000110 SPRING A NI
4 – 35 017-10000300 PULLEY
4 – 36 011-10000300 MOTOR BKT
4 – 37 085-01000121 MOTOR DC:12V ( 3 SPEED )
4 – 38 002-10000000 PANEL
4 – 39 031-10000230 SPRING B BLK
4 – 40 011-10000000 TRANS SPRING BKT
4 – 41 013-40000001 NUT M4
4 – 42 020-10000100 STOP WASHER
18

19

GF-600
EXPLODED VIEW-5
REF. NO PARTS NO. DESCRIPTION REMARKS
5
–
1 TRAY ROULETTE
5 – 2 GEAR ROULETTE
5 – 3 SENSOR PCB ASS’Y
5 – 4 SHEET MOTOR
5 – 5 GEAR WORM
5 – 6 TRAY DISC
5 – 7 GEAR CAM
5 – 8 BRKT CHUCK
5 – 9 MAGNET
5 – 10 GEAR CONVERT
5 – 11 SLIDER CAM
5 – 12 BELT LOAD
5 – 13 GEAR LOAD
5 – 14 GEAR PULLEY
5 – 15 GEAR TRAY
5 – 16 BASE MAIN
5 – 17 LEVER LIFTER
5 – 18 CMS-A30NG6
5 – 19 TABLE CHUCK
5 – 20 SHEET CHUCK
5 – 21 PULLEY MOTOR
5 – 22 MOTOR DC
5 – 23 MECHA PCB ASS’Y
5 – 24 SW PCB ASS’Y
5 – 25 GEAR SYNCRO
5 – 26 RUBBER CD
20