Aiwa HV-GX910, HV-FX970 Service Manual

HV-FX970

Z

HV-GX910

Z

SERVICE MANUAL

VIDEO CASSETTE RECORDER

This Service Manual is the "Revision Publishing" and replaces "Simple Manual" (S/M Code No. 09-996-332-7T1).

BASIC TAPE MECHANISM : D-33

S/M Code No. 09-996-332-7R1

REVISION

DATA

TABLE OF CONTENTS

SPECIFICATIONS ............................................................ 3

ACCESSORIES LIST ....................................................... 3

DISASSEMBLY INSTRUCTIONS..................................... 4

SERVICE POSITION ........................................................ 5

VCR TEST TAPE INTERCHANGEABILITY TABLE ........ 6

ELECTRICAL MAIN PARTS LIST.............................. 7 ~ 8

WIRE HARNESS DIAGRAM ............................................ 9

BLOCK DIAGRAM ................................................. 10 ~ 18

SCHEMATIC DIAGRAM

1. POWER SECTION.............................................. 19 ~ 20

2. AUDIO/VIDEO SECTION.................................... 21 ~ 22

3. SYSTEM CONTROL/SERVO/OSD SECTION) .. 25 ~ 26

4. TUNER/IF SECTION........................................... 27 ~ 28

5. SCART SECTION [FOR FX970Z]....................... 29 ~ 30

6. SCART SECTION [FOR GX910Z] .............................. 31

7. FRONT 1 C.B.............................................................. 32

8. FRONT 2 C.B.............................................................. 32

TRANSISTOR ILLUSTRATION...................................... 24

WAVEFORM

1. VIDEO SECTION ........................................................ 23

2. SERVO/OSD SECTION.............................................. 24

3. TUNER SECTION....................................................... 28

WIRING

1. MAIN C.B SECTION [FOR FX970Z].................... 33~ 34

2. MAIN C.B SECTION [FOR GX910Z] ................... 35~ 36

3. FRONT 1 C.B SECTION............................................. 37

4. FRONT 2 C.B SECTION............................................. 37

IC DESCRIPTION ................................................... 38 ~ 43

ADJUSTMENT........................................................ 44 ~ 45

MECHANICAL EXPLODED VIEW 1/1 ........................... 46

MECHANICAL PARTS LIST 1/1 ................................... 47

MECHANISM EXPLODED VIEW 1/3, 2/3, 3/3 ..... 48,50,52

MECHANISM PARTS LIST 1/3, 2/3, 3/3 .............. 49,51,53

DECK MECHANISM PARTS LOCATIONS

Top View.......................................................................... 54

Bottom View .................................................................... 54

DECK MECHANISM DISASSEMBLY

1. Drum Assembly......................................................... 55

2. Plate Assembly Top................................................... 57

3. Holder Assembly CST............................................... 57

4. Guide CST ................................................................ 57

5. Bracket Side (L)/Bracket Assembly Door.................. 57

6. Arm Assembly F/L ..................................................... 57

7. Lever Assembly S/W................................................. 57

8. Arm Assembly Cleaner.............................................. 58

9. Head F/E ................................................................... 58

10. Base Assembly A/C Head ......................................... 58

11. Brake Assembly S ..................................................... 59

12. Brake Assembly T ..................................................... 59

13. Arm Assembly Tension.............................................. 59

14. Reel S & Reel T ........................................................ 59

15. Support CST ............................................................. 60

16. Base Assembly P4.................................................... 60

17. Opener Lid ................................................................ 60

18. Arm Assembly T/up ................................................... 60

19. Arm Assembly Pinch ................................................. 60

20. Belt Capstan/Motor Capstan ..................................... 61

21.Clutch Assembly D33 ................................................. 61

22. Lever F/R .................................................................. 61

23. Gear Assembly H-UP/D or Gear Assembly UP/D ..... 61

24. Bracket Assembly Jog............................................... 62

25. Guide Rack F/L, Gear Rack F/L................................ 62

26. Brake Assembly Capstan.......................................... 62

27. Gear Drive/Gear Cam/Gear Connector .................... 63

28. Bracket Assembly L/D motor..................................... 63

29. Gear Sector............................................................... 64

30. Base Tension/Plate Slider/Lever Tension .................. 64

31. Gear Assembly P3/Gear Assembly P2 ..................... 65

32. Base Assembly P3/Base Assembly P2 ..................... 65

33. Arm Assembly Idler Jog or Arm Assembly Idler ........ 65

DECK MECHANISM ADJUSTMENT

Tools and Fixtures for service ......................................... 66

1. Mechanism Alignment Position Check........................ 67

2. Preparation for Adjustment ......................................... 68

3. Checking Torque ......................................................... 68

4. Guide Roller Height Adjustment.................................. 69

4-1. Preliminary Adjustment .......................................... 69

4-2. Precise Adjustment ................................................ 69

5. Audio/Control (A/C) Head Adjustment......................... 70

5-1. Preliminary Adjustment .......................................... 70

5-2. Confirm that the Tape Path smoothly between the

Take-up Guide and Pinch Roller ............................ 71

5-3. Precise Adjustment (Azimuth Adjustment)............. 71

6. X-Value Adjustment..................................................... 71

7. Adjustment after Replacing Drum Assembly

(Video Heads) ............................................................. 72

8. Check the Tape Travel after Reassembling

Deck Mechanism......................................................... 72

8-1. Checking Audio and RF Locking Time

during Playback and after CUE or REV ................ 72

8-2. Check for Tape Curling or Jamming....................... 72

MAINTENANCE/INSPECTION PROCEDURE

1. Check before starting Repairs .................................... 73

2. Required Maintenance ................................................ 74

3. Scheduled Maintenance ............................................. 74

4. Supplies Required for Inspection and Maintenance ... 74

5. Maintenance Procedure.............................................. 74

5-1. Cleaning................................................................. 74

5-2. Greasing ................................................................ 75

MECHANISM TROUBLESHOOTING GUIDE

1. Deck Mechanism ........................................................ 76

2. Front Loading Mechanism .......................................... 79

2

SPECIFICATIONS

Video recording system Rotary 2 head helical scanning system Video head [HV-FX970Z] Double azimuth 4 heads [HV-GX910Z] Azimuth 2 heads Tuner system Frequency synthesized tuner TV system B/G Video signal system PAL color signal, 625 lines, 50 fields Usable cssettes VHS video cassettes Recording/playback time PAL/MESECAM

SP: 5hours max. with E-300 tape. LP: 10 hours max. with E-300 tape [HV-FX970Z] NTSC (Playback only) SP: 3 hours 30 minutes max. with T-210 tape LP: 7 hours max. with T-210 tape [HV-FX970Z] EP: 10 hours 30 minutes max. with T-210 tape [HV-FX970Z]

Tape speed PAL/MESECAM

SP: 23.39 mm/sec. LP: 11.69 mm/sec. [HV-FX970Z] NTSC (Playback only) SP: 33.35 mm/sec. LP: 16.67 mm/sec. [HV-FX970Z] EP: 11.12 mm/sec. [HV-FX970Z]

Rewind time: Approx. 3 min. with E-180 tspe Channel coverage VHF-low: C02 to C04, C13 to C20,

S01 to S07 (CATV) VHF-high: C05 to C12, S08 to S41 (CATV)

UHF: C21 to C71 Video input 1.0 Vp-p, 75 ohm, unbalanced Video output 1.0 Vp-p, 75 ohm, unbalanced Video S/N 43 dB (SP) Audio track 1 track (Mono) Audio input SCART: -5 dBs, more than 10 k ohm Audio output SCART: -5 dBs, less than 1 k ohm Operating temperature: 5 °C to 40 °C Power requirements 200 - 240 V AC, 50 Hz Power consumption 18 watts

TYPE 3.5 watts (power save mode.) Dimensions 360 (W) x 278 (D) x 95 (H) mm

(141/4 x 11 x 33/4 in.) Weight Approx. 3.3 kg (7.26 lbs.)

• Design and specifications are subject to change without notice.

ACCESSORIES LIST

REF. NO PART NO. KANRI DESCRIPTION

1 S8-35R-P00-36C INSTRUCTION ASSY<910> 1 S8-35R-P00-34D INSTRUCTION ASSY<970> 2 S7-11R-1P0-16D REMOTE CONTROLLER ASSY<910> 2 S7-11R-1P0-16C REMOTE CONTROLLER ASSY<970> 3 S8-615-05B-000 CABLE SET ASSY

NO.

3

DISASSEMBLY INSTRUCTIONS

1. Top Case Removal

1) Remove 4 screws holding the top case.

2. Panel Front Removal (see Fig. 1)

1) Release 7 tabs, and then remove the panel front.

4. Mechanism Removal (see Fig. 3)

1) Disconnect the drum FF cable from the connector (PMD01) on the Main C.B.

2) Disconnect the ACE head FF cable from the connector (P3D02) on the Main C.B.

3) Remove 6 screws (A).

PMD01

FF CABLE

P3D02

A

PANEL FRONT

TAB

Fig. 1

3. Front-1 C.B. and Front-2 C.B. Removal (see Fig. 2)

1) Release 2 tabs, and then remove front-1 C.B. from the connector (PKM02) in the direction of arrow (1).

2) Release the tab, and then remove front-2 C.B. from the connector (PKM01) in the direction of arrow (2).

TAB

(1)

PKM01

TAB

Front-2 C,B

MAIN C,B

Front-1 C,B

(2)

FF CABLE

A

Fig. 3

5. Main C.B. Removal (see Fig. 4)

1) Remove 2 SCREWS B holding the panel assy , distri-butor .

2) Release 5 tabs, and then simultaneously lift the panel assembly, distributor and Main C.B. to remove them.

B

TAB

PANEL ASSY, DISTRIBUTOR

TAB

Fig. 2

TAB

PKM02

MAIN C,B

Fig. 4

4

SERVICE POSITION

MAIN C.B

D33 MECHANISM

SPACER

60mm

MAIN C.B

D33 MECHA

SPACER

REAR PANEL

Use a spacer with a diameter of 10-15 mm, and of any shape (round, square, etc.). Caution: The spacer must be of insulated material, of a size that does not hinder the mechanism loading.

Side view

To set the mechanism to the service position in active status: Insert a spacer as shown below: The service position can be set in the stable status without any defective contact.

Location

Install spacers at locations (A) and (B).

A

D33 Mechanism Top View

CYLINDER

B

HEAD CLEANER

5

VCR TEST TAPE INTERCHANGEABILITY TABLE

There are two types of the new allgnment tape CH-1B (for NTSC) and CH-2 (for PAL). On each tape four signals (1)-(4) are recorded for the times and in the order shown below.

(1) : 8min. → (2) : 2min. → (3) : 5min. → (4) : 5min.

The TTV-MP1 (for M-PAL), TTV-MS1 (for MESECAM) and TTV-S1 (for SECAM) allgnment tapes have the same contents as the previous tapes.

Method

NTSC

Now in use TYPE

Model Contents *1

TTV-N1

TTV-NS1

TTV-N1E

TTV-NS6E

TTV-N2

TTV-N12 (SCV-1998)

TTV-N6 (TTV-N06T)

TTV-N7A

NTSC, Color bar, 1 kHz, SP

NTSC, Color bar, 1 kHz, EP

NTSC, Color bar, No sound, EP

NTSC, Stairsteps, 7 kHz, SP

NTSC, Color bar, 1 kHz, SP

NTSC, Mono scope, 7 kHz, SP

NTSC, Stairsteps, 1 kHz, SP, HiFi 400 Hz

New TYPE

Model Contents *1

CH-1B(2)

CH-1B(4) *2

CH-1B(1)

CH-1B(4)

CH-1B(3)

NTSC, Stairsteps, 1 kHz, SP

No Changed.

NTSC, Color bar, 1 kHz, EP

No Changed.

NTSC, Stairsteps, 7 kHz, SP

NTSC, Color bar, 1 kHz, EP

No Changed.

NTSC, Color bar, No sound SP, HiFi 400 Hz

Application

PB-Y Level/General electrical ADJ. Head ACE Height/Tilt ADJ.

For S-VHS (SQPB) check

Switching position ADJ.

For S-VHS (SQPB) check

Head ACE Azimuth ADJ.

FM Envelope ADJ. X-V alue ADJ.

For total picture quality check (resolution, etc)

HiFi Audio PB Level ADJ.

Switching position ADJ. PB-Y Level/General electrical ADJ. Head ACE Height/Tilt ADJ.

Switching position. (LP Model) FM Envelope ADJ. (LP Model) X-Value ADJ. (LP Model)

HEAD ACE Azimuth ADJ. FM Envelope ADJ. (SP Model) X-Value ADJ. (SP Model)

For total picture quality check (resolution, etc)

HiFi Audio PB Level ADJ.

FM Filter ADJ.

PAL

TTV-P1

TTV-P1L

TTV-P2

TTV-P6 (TTV-N06T)

TTV-P7

TTV-P16

PAL, Color bar, 1 kHz, SP

PAL, Color bar, 1 kHz, LP

PAL, Stairsteps, 6 kHz, SP

PAL, Monoscope, 6 kHz, SP

PAL, Stairsteps, 1 kHz, SP, HiFi 1 kHz

PAL, Color bar, 400 Hz, SP, HiFi 1 kHz

CH-2 (2) * 3

CH-2 (4)

CH-2 (1)

CH-2 (3)

PAL, Stairsteps, 1 kHz, SP

PAL, Color bar, 1 kHz, LP

PAL, Stairsteps, 6 kHz, SP

No Changed.

PAL, Color bar, No sound SP, HiFi400 Hz

No Changed.

* 1. Described in the order of color format. video signal. linear audio. tape speed and Hi-Fi audio. * 2. Use CH-1B (1)-(3) with models used exclusively in the SP mode. * 3. Use CH-2 (3) and (4) when it is necessary to observe the chroma signal.

6

ELECTRICAL MAIN PARTS LIST

REF. NO PART NO. KANRI DESCRIPTION

IC SI-SK6-153-00A IC,STR-G6153T 5P

! S6-570-62B-000 SENSOR PC123Y SI-KE4-310-00A IC,KIA431 3P SI-SA7-159-10A IC,LA71591M SI-HI3-977-06A IC,HD3977RC06F

SI-SS3-082-00A IC,KA3082 SI-AL2-416-00B IC,AT24C16-10PC SI-KE7-031-00A IC,KIA7031P SI-KE7-042-00B IC,KIA7042P 87-A20-281-010 IC,MN12510

SI-SA7-479-30A IC,LC74793<970> SI-RH7-635-00A IC,BH7635S<970>

TRANSISTOR ST-R32-030-9AA TR,KTC3203-Y

S7-A30-293-010 TR,KTC2804-Y ST-R31-980-9AC TR,KTC3198-TP-BL S3-1KR-A10-3M0 TR,KRA103M-TP ST-R12-680-9BA TR,KTA1268-BL

ST-R12-730-9AA TR,KTA1273-TP-Y SK-RC1-01M-000 TR,KRC101M ST-R31-990-9AF TR,KTC3199-BL ST-R12-670-9AC TR,KTA1267-GR ST-R10-300-9AE TR,KRC103M

DIODE SD-D22-100-9AA DIODE,ERA22-10

SD-D01-000-9AC DIODE,EU01W 87-020-215-010 DIODE,ERC81-004L22 SD-R18-020-9AA DIODE,ERA18-02KFRB 87-070-112-060 DIODE,RU4YXLF

87-020-465-080 DIODE,1SS133 87-017-011-080 DIODE,IN4003A 87-070-173-010 DIODE,S1WBA60

MAIN C.B BC101 S6-360-04C-000 COIL,BFS3550R2FD8

BC102 S6-360-04C-000 COIL,BFS3550R2FD8

!C101 S6-240-88F-000 CAP,PCX2 275V 0.1UF,M !C101 S6-240-88F-000 CAP,0.1UF-275V !C102 S6-240-88F-000 CAP,PCX2 275V 0.1UF,M

!C102 S6-240-88F-000 CAP,0.1UF-275V !C103 S0-2TF-H68-0M0 CAP,E 68UF-400V !C105 87-016-375-010 CAP,0.01UF-630V !C106 S6-240-87B-000 CAP,100P-1KV

C109 87-010-982-040 CAP,E 33UF-25V

!C112 87-012-379-010 CAP,3300PF-400V !C113 SA-1B3-0KH-2M0 CAP,220PF-400V

C115 S6-240-85D-000 CAP,E 47-50V C116 87-010-237-910 CAP,E 1000UF-16V C117 87-016-577-080 CAP,470UF-16V

C118 87-A10-189-080 CAP,E 220M-10V C119 S6-240-85D-000 CAP,E 47-50V C120 87-010-387-010 CAP,E 470UF-25V KME C121 87-010-387-010 CAP,E 470UF-25V KME C123 87-010-078-080 CAP,E 47M-6.3V

C124 87-010-552-040 CAP,E 22-16V C151 87-015-698-080 CAP,E 4.7-50V C152 87-015-698-080 CAP,E 4.7-50V C153 87-015-698-080 CAP,E 4.7-50V C155 87-010-544-010 CAP,E 0.1-50V

C156 87-015-681-080 CAP,E 10-16V C157 87-015-681-080 CAP,E 10-16V C159 87-015-681-080 CAP,E 10-16V C218 87-010-544-010 CAP,E 0.1-50V C301 87-010-544-010 CAP,E 0.1-50V<970>

NO.

REF. NO PART NO. KANRI DESCRIPTION

C302 87-010-544-010 CAP,E 0.1-50V<970> C303 87-015-695-080 CAP,E 1.0M-50V C304 87-016-088-040 CAP,E 220-6.3V C305 87-010-544-010 CAP,E 0.1-50V C310 87-015-698-080 CAP,E 4.7-50V<970>

C310 87-015-681-080 CAP,E 10-16V<910> C314 87-010-544-010 CAP,E 0.1-50V C315 87-015-681-080 CAP,E 10-16V C316 87-015-681-080 CAP,E 10-16V C318 87-010-402-040 CAP,E 2.2-50V

C319 87-010-544-010 CAP,E 0.1-50V C320 SC-N10-50K-948 CAP,1UF-50V C322 87-010-078-080 CAP,E 47M-6.3V C323 87-010-078-080 CAP,E 47M-6.3V C324 87-010-544-010 CAP,E 0.1-50V

C325 SC-N10-50K-948 CAP,1UF-50V C326 87-015-681-080 CAP,E 10-16V C327 SC-N10-50K-948 CAP,1UF-50V C331 87-016-088-040 CAP,E 220-6.3V C334 87-016-088-040 CAP,E 220-6.3V

C335 87-010-544-010 CAP,E 0.1-50V C337 87-015-698-080 CAP,E 4.7-50V C339 87-015-698-080 CAP,E 4.7-50V C346 87-016-088-040 CAP,E 220-6.3V C348 87-015-695-080 CAP,E 1.0M-50V

C350 87-010-544-010 CAP,E 0.1-50V C354 87-016-088-040 CAP,E 220-6.3V C358 87-015-695-080 CAP,E 1.0M-50V C371 87-010-544-010 CAP,E 0.1-50V C373 87-010-544-010 CAP,E 0.1-50V

C374 87-010-544-010 CAP,E 0.1-50V<910> C375 87-010-544-010 CAP,E 0.1-50V C401 87-010-078-080 CAP,E 47M-6.3V C403 87-010-544-010 CAP,E 0.1-50V C405 87-015-681-080 CAP,E 10-16V

C406 87-015-681-080 CAP,E 10-16V C410 87-010-544-010 CAP,E 0.1-50V C412 87-010-544-010 CAP,E 0.1-50V C415 87-010-552-040 CAP,E 22-16V C420 87-010-408-040 CAP,E 47UF-50V

C422 87-010-544-010 CAP,E 0.1-50V<910> C423 87-015-698-080 CAP,E 4.7-50V C424 87-010-544-010 CAP,E 0.1-50V C466 87-010-403-040 CAP,E 3.3-50V C4A1 87-010-552-040 CAP,E 22-16V

C500 87-016-455-080 CAP,E 470UF-6.3V<970> C500 87-016-040-080 CAP,0.047F-5.5V<910> C501 87-010-544-010 CAP,E 0.1-50V C502 87-010-078-080 CAP,E 47M-6.3V C503 87-010-544-010 CAP,E 0.1-50V

C504 87-016-088-040 CAP,E 220-6.3V C505 87-010-078-080 CAP,E 47M-6.3V C507 87-010-544-010 CAP,E 0.1-50V C508 87-010-544-010 CAP,E 0.1-50V C510 87-015-684-080 CAP,E 47-16V<910>

C513 87-010-544-010 CAP,E 0.1-50V C524 87-010-265-080 CAP,E 33-16V C525 87-015-684-080 CAP,E 47-16V C526 87-A10-216-080 CAP,E 47M-25V C529 87-010-544-010 CAP,E 0.1-50V

C530 87-015-681-080 CAP,E 10-16V C534 87-015-698-080 CAP,E 4.7-50V C535 87-015-698-080 CAP,E 4.7-50V C541 87-015-698-080 CAP,E 4.7-50V C545 87-010-544-010 CAP,E 0.1-50V

C546 87-015-684-080 CAP,E 47-16V C561 87-010-078-080 CAP,E 47M-6.3V C588 87-015-698-080 CAP,E 4.7-50V C5F4 87-010-544-010 CAP,E 0.1-50V C5F7 87-010-078-080 CAP,E 47M-6.3V

NO.

7

REF. NO PART NO. KANRI DESCRIPTION

C5F8 87-010-078-080 CAP,E 47M-6.3V C701 87-015-698-080 CAP,E 4.7-50V C702 87-015-681-080 CAP,E 10-16V C703 87-015-698-080 CAP,E 4.7-50V C704 87-010-078-080 CAP,E 47M-6.3V

C706 87-016-577-080 CAP,470UF-16V C713 87-010-078-080 CAP,E 47M-6.3V C7M2 87-015-684-080 CAP,E 47-16V C7M5 87-015-681-080 CAP,E 10-16V C7V1 87-015-684-080 CAP,E 47-16V<970>

C7V2 SC-N10-50K-948 CAP,1UF-50V<970> C7V6 87-015-698-080 CAP,E 4.7-50V<970> C7V7 87-015-695-080 CAP,E 1.0M-50V<970> C7V8 87-015-695-080 CAP,E 1.0M-50V<970> C902 87-016-577-080 CAP,470UF-16V

C905 87-015-681-080 CAP,E 10-16V<910> C906 87-015-681-080 CAP,E 10-16V<910> C912 87-016-577-080 CAP,470UF-16V<970> C941 87-015-681-080 CAP,E 10-16V<970> C943 87-015-681-080 CAP,E 10-16V<970>

C944 87-015-681-080 CAP,E 10-16V<970> C945 87-015-681-080 CAP,E 10-16V<970> C946 87-015-681-080 CAP,E 10-16V<970> C947 87-015-681-080 CAP,E 10-16V<970> C948 87-015-681-080 CAP,E 10-16V<970>

C949 87-010-544-010 CAP,E 0.1-50V<970> C950 87-015-681-080 CAP,E 10-16V<970> C951 87-015-684-080 CAP,E 47-16V C952 87-010-544-010 CAP,E 0.1-50V C953 87-015-681-080 CAP,E 10-16V<970>

C955 87-015-681-080 CAP,E 10-16V<970> CS501 S6-00R-DB0-04C SW,MPU10252MLB4 MIC DIG5F1 S3-02R-1N0-03B 7MT229GK MONO FUTABA UNIVERSA DIG5F1 S3-02R-2N0-03B SVV07MM16 MONO SAMSUNG UNIVER ES501 S9-31R-001-6A0 SENSOR END

ES502 S9-31R-001-6A0 SENSOR END

!F101 S5-850-11T-000 FUSE,1600MA 250V !F103 87-001-196-010 ICP-N10 T104 !FH01 S5-860-08B-000 FUSE CLUMP !FH02 S5-860-08B-000 FUSE CLUMP

!FR02 SR-F04-71Q-619 4.7 OHM 1/4 W (3.4) 5% TR R

JK901 S6-20R-M00-02B JACK 21P<910> JK901 S6-20R-M00-02A JACK 42P<970> !L102 S6-161-45H-000 FILTER SHT LFS2020V4-04350 L103 S6-330-88G-000 COIL,CHOCK TP 5MM 27MH

L104 S6-330-88G-000 COIL,CHOCK TP 5MM 27MH L105 87-005-696-080 COIL,100M L301 87-005-196-080 COIL,10UH L302 87-005-693-080 COIL,56M 2.3-3.4-5 L303 87-005-438-080 COIL,33M 2.3-3.4-5

L304 87-005-696-080 COIL,100UH L306 87-005-696-080 COIL,100UH L307 87-005-696-080 COIL,100UH L308 S2-165-120-000 COIL,12M 2.3-3.4-5 L309 87-005-696-080 COIL,100UH

L401 87-005-683-080 COIL,8.2M L402 SL-R68-01J-045 COIL,6800U J 6-7-5 L405 87-005-196-080 COIL,10UH L502 87-005-696-080 COIL,100UH L505 87-005-696-080 COIL,100UH

L506 87-005-686-080 COIL,15UH L507 87-005-696-080 COIL,100M L5S1 87-005-438-080 COIL,33M 2.3-3.4-5 L701 87-005-696-080 COIL,100UH L702 87-005-196-080 COIL,10UH

L703 87-005-196-080 COIL,10UH L704 87-005-683-080 COIL,8.2M L705 87-005-696-080 COIL,100UH L7V1 87-005-696-080 COIL,100UH<970> L901 87-005-696-080 COIL,100M

NO.

L902 87-005-696-080 COIL,100M L903 SL-A01-01K-018 1.0M K 2.3X3.4 L5 TP L L904 87-005-696-080 COIL,100M L905 S6-360-04C-000 BEAD CORE,BFS3550R2FD8 L906 87-005-696-080 COIL,100M

L907 S6-360-04C-000 BEAD CORE,BFS3550R2FD8 L911 87-005-696-080 COIL,100M<970> L912 87-005-696-080 COIL,100M<970> L914 87-005-696-080 COIL,100M<970> L916 87-005-696-080 COIL,100M<970>

LD501 S9-31R-001-7A0 LED MS501 S6-00R-PY0-01B SW,MMS00420ZMBO MIC P3D01 S5-612-34Y-000 CONN,6P<970> P3D01 S5-612-34Z-000 CONN,3P<910> P3D02 S6-30R-5S0-08E CONN,6P

P3D03 S5-612-51B-000 CONN,2P PMC01 S6-30R-2P0-05C CONN,8P PMD01 S5-612-34V-000 CONN,7P PMK01 S6-724-34B-000 CONN,5P PMK02 S5-618-43J-000 CONN,10P

PML01 S6-30R-2S0-11A CONN,2P

!PW101 S5-612-92B-000 CONN,2P !R101 S6-140-07A-000 RES,2.7-2W !R102 SR-S10-03K-619 RES,100K-2W !R104 SR-S56-02K-619 RES,56K-2W

!R109 SR-S03-50K-619 RES,0.35-2W

R524 SR-F06-81J-619 6.8 OHM 1 W 5% TR R RS501 S5-00R-AB0-02A GP1S566 SHARP D-33 REEL SENSO RS502 S5-00R-AB0-02A GP1S566 SHARP D-33 REEL SENSO T101 S6-420-23M-000 TRANS EER2828

TL401 S6-330-32K-000 COIL,OSC BIAS 1CHIP 5V TU701 S7-00R-P3G-01B TUNER TCMB0600PD08C VR501 S6-130-32W-000 VR,RH063MCJ5R(220K) X301 S2-02R-144-3AE X’TAL,4.433709MHZ 15PPM X501 S2-02R-310-01E X’TAL,10.0000

X502 S5-290-01K-000 X’TAL,32.768KHZ X503 S2-02R-317-71E X’TAL,17.7344 X5F1 S6-180-10B-000 X’TAL,4MHZ X7V1 S2-02R-317-71E ATS TAEIL RADIAL 17.734476MHZ<970> X7V1 S2-02R-317-71F KEUMSEOK RADIAL 17.7344XR<970>

ZD104 83-NEG-677-080 DIODE,MTZ5.6B ZD151 SD-Z13-000-9AA ZENER,MTZ13A ZD152 S9-7U0-100-1C0 MTZ10-C ZD153 SD-Z13-000-9AA ZENER,MTZ13A ZD501 SM-TZ6-8CT-000 ZENER,MTZ6.8C

ZD503 83-NEG-678-080 ZENER,MTZ6.2B ZD5F1 SD-Z51-000-9HA ZENER,MTZ5.1B 0.5W ZD701 87-002-743-080 ZENER,MTZ33B ZD9A1 SD-Z13-000-9AA ZENER,MTZ13A

FRONT-1 C.B PMK02 S5-618-44J-000 CONN,10P

SW5A1 S5-562-82C-000 SW,SKQNQED ALPS 5MM SW5A2 S5-562-82C-000 SW,SKQNQED ALPS 5MM SW5A3 S5-562-82C-000 SW,SKQNQED ALPS 5MM SW5A4 S5-562-82C-000 SW,SKQNQED ALPS 5MM

SW5A5 S5-562-82C-000 SW,SKQNQED ALPS 5MM SW5A6 S5-562-82C-000 SW,SKQNQED ALPS 5MM

FRONT-2 C.B LD5A1 SD-L53-110-0AA LED,SG5311(GRN)

PMK01 S5-610-36D-000 CONN,5P SW5A0 S5-562-82C-000 SW,SKQNQED ALPS 5MM SW5A7 S5-562-82C-000 SW,SKQNQED ALPS 5MM SW5A8 S5-562-82C-000 SW,SKQNQED ALPS 5MM

SW5A9 S5-562-82C-000 SW,SKQNQED ALPS 5MM

REF. NO PART NO. KANRI DESCRIPTION

NO.

8

WIRE HARNESS DIAGRAM

B FRONT1 C.B

PKM02 PMK02

1 2 3 4 5 6 7 8

GND

9

KEY RTN0

10

PMD01 PMD01

D.CTL

1

M.GND

2

DFG

3

12V

4 5

GND

6

5.3V

7

PMC01 PCM01

GND

1 2 3 4 5 6 7 8 9

10

A MAIN C.B

1

MOTOR GND

2

I-LIMIT

3

CAP CTL

4

12V

5

CFG

6

CAP REV "L"

7

5.3V

8

P3D02 P3D02

CTL(+)

1

CTL(-)

2

A/E(-)

3

A/E(+)

4

A.REC

5

A.PB

6

MS501

GND

1

MODE S1

2

MODE S2

3

MODE S3

4

MODE S4

5

PG

1 2

LOWER

3 4

DRUM

5 6 7

1 2 3 4

CAPSTAN

5

MOTOR

6 7 8

1 2 3

ACE

4

HEAD

5 6

1 2

MS501

3

MODE SW

4 5

C FRONT2 C.B

PKM01 PMK01

GND

1

OTB "H"

2

5.3VA

3

GND

4

KEY RTN1

5

P3D03 PD303 12GND

FULLERASE12

1 2 3 4 5

P3D01 P3D01

SP A PB

1

SP REC

2

SP B PB

3

LP A PB

4

LP REC

5

LP B PB

6

[FOR FX970Z]

PML01 PML01

12LD(+)

LD(-)12

FULL ERASE HEAD

1 2

CYL.

3

HEADS

4 5

FX970Z:4HEAD

6

GX910Z:2HEAD

LOADING MOTOR

9

BLOCK DIAGRAM-1 (POWER SECTION)

5.3VA

5VG

BD101

R101

R102

C103

C113

C112

HOT GND

F101

WH

(BL)

BK

(BR)

PW101

6

9

10

11

8

7

12

2

1

4

3

13

15

1

2

IC102

IC103

4

T101

TRANSFORMER

4

2

3

1

RECTIFIER

& SMOOTHING

9V REG.

BLOCK

(Q152,R152,

Q165,C153,

ZD152)

RECTIFIER

& SMOOTHING

RECTIFIER

& SMOOTHING

DRIVE & S/W BLOCK

OVER CURRENT LIMIT

BLOCK

+

12.3V(CAP)

-27VG

FD(-)

FD(+)

33VT

12VA

9V

12V(DRUM)

5VT

5V

TIMER "H"

D152 D154 D155

SNUBBER

BLOCK

(IC101,R109,C111,

D104,R103,C109)

(D102,R104,

C105,C106)

(D107, C118,R114)

(D109, C120,

L104,C121)

(D106, C116,

L103,C117)

NOTES: Symbol denotes AC ground.

Symbol denotes DC chassis ground.

Hot circuit

PWR CTL "H"

STAND-BY "H"

LINE FILTER

BLOCK

(C101,L102,

C102)

RECTIFIER

& SMOOTHING

(D105, C115)

-27VG S/W BLK

(Q154,R164,R165,Q155)

(Q156,Q157,R166,R167)

RECTIFIER

& SMOOTHING

(D108, C119)

36V S/W

BLOCK

(Q158,R154,

R155)

12VT REG.

BLOCK

(Q153,C152

R171, ZD153)

5VT SW

BLOCK

(Q162, R161,

R162)

5V S/W

BLOCK

PWR CTL

BLOCK

Q160

(Q159, R158,

R159)

(Q161)

FEED-BACK

BLOCK

(R116,R117,R118

R119,R120,R121

C114)

12VA REG.

BLOCK

(Q151,R151, ZD151, C151)

5VG SW

BLOCK

(Q164,R169,R170)

FROM

SYSCON/SERVO

SECTION

FROM/TO

SYSCON/SERVO

SECTION

TO

SYSCON/SERVO,

TUNER/IF

SECTION

TO

SYSCON/SERVO,

SECTION

TO

TUNER/IF

SECTION

TO

SCART

SECTION

10

BLOCK DIAGRAM-2 (AUDIO SECTION)

: PB CHROMA SIGNAL : PB Y SIGNAL

ACC

[FOR FX970Z]

C. COMB LPF

Y

DELAY

MAIN

CONV

C LPF

PB EQ

LPF

YNR

NL

DE EMP

Y/C MIX

60dB AMP

CLAMP

DOUBLE

LIMIT

PB PEAKING

MAIN

DE-EMPH

V.H S/W

CLOCK DATA C SYNC

Y/C

VIDEO

V. OUT

VPS

PB FM

AGC

FM

DEM ENV. DET

SUB

LPF

SP 'B' PB

SP 'A' PB

V. ENV

COLOR

ROTARY

88

59 57 54 52 51 61 72 71

46 45

43 41

91

93

10 18 17 21 20 23 24 28 29

11

LP 'A' PB

LP 'B' PB

82

85

IC301

LA71591M

Q301 Q302

Q305

Q304

FROM CYL.HEADS

TO SYSCON/SERVO SECTION

FROM SYSCON/SERVO SECTION

FROM/TO SYSCON/SERVO SECTION

: REC CHROMA SIGNAL : REC Y SIGNAL

SP REC

IC301

LA71591M

COLOR

ROTARY

V. H S/W CLOCK

DATA

C. SYNC REC 'H'

Y/C VIDEO

(TO DRUM)

90

LP REC

(TO DRUM)

84

71 72 61 51 52 54 57 59

46 45

43 41

38

36

34

32

31

302928242319181110

+

REC FM

EQ

FM MOD

W/D CLIP

MAIN

EMPH

AGC

FBC

NL EMPH

DETAIL ENH

Y-LPF

YNR

BPF1

C. COMB

BPF

Y

DELAY

COMB

AMP

CCD

LPF

S/W

V. IN 1

V. IN 2

[FOR FX970Z]

Q305

FROM SYSCON/SERVO SECTION

FROM/TO SYSCON/SERVO SECTION

FROM SCART SECTION

BLOCK DIAGRAM-3 (VIDEO SECTION)

•PB Mode

AUDIO

HA

Q401 Q402 Q403

: PB AUDIO SIGNAL

99

•PB Mode

IC301

LA71591M

1

100

4

6

LINE AMP

5

LP/EP

SERIAL

DECODER

24 23

DATA

FROM SYSCON/SERVO SECTION

CLK

MUTE

96

NORMAL, AUDIO OUT

To SCART SECTION

•REC Mode

LINE 1 IN

TUNER

AUDIO IN

FROM SCART SECTION

78 76

80

ALC

: REC AUDIO SIGNAL

LINE AMP

IC301

LA71591M

MUTE

REC AMP

96 98 7 6

AUTO

BIAS

99

CONTROL

Q401

TL401, Q405

BIAS OSC

AUDIO

HD

•REC Mode

1211

BLOCK DIAGRAM-4 (TUNER SECTION)

FROM POWER SECTION

FROM/TO SCART SECTION

FROM POWER SECTION

FROM SYSCON/SERVO SECTION

FROM POWER SECTION

FROM SYSCON/SERVO SECTION

FROM POWER SECTION

FROM SYSCON/SERVO SECTION

VIDEO(VPS)

1B

4E

3E

2B 1H 2H 3H

3B

4H

4B 5H

6H

VIDEO BUFFER

Q701

FROM POWER SECTION

TO SCART SECTION

5B

1E

5E

:PB VIDEO SIGNAL :REC VIDEO SIGNAL

[FOR FX970Z]

:PB AUDIO SIGNAL :REC AUDIO SIGNAL

1413

BLOCK DIAGRAM-5 (SCART SECTION)

12VA

GND

To POWER SECTION

MOD.AUDIO

VIDEO

TU VIDEO

To TUNER/IF SECTION

AUDIO 2 AUDIO 1

MONO AUDIO

VIDEO 2

To AUDIO/ VIDEO SECTION

To SYSCON/ SERVO SECTION

AUDIO-R IN

GND GND

AUDIO-L IN

JK901 [SCART1]

SCART H

8

9 10 11 12 13 14

GND

GND GND

15 16 17 18 19 20 21

GND GND

VIDEO OUT

VIDEO IN

GNG

JK901

SCART1

21

20

19

18

17

16

15

14

13

12

11

10

9

8

7

6

5

4

3

1

AV IN/OUT(TV) [FOR GX910Z]

2

:PB VIDEO SIGNAL :REC VIDEO SIGNAL

: VIDEO SIGNAL :PB AUDIO SIGNAL

:REC AUDIO SIGNAL

1A

3A

AUDIO-R OUT

1 2

AUDIO-L OUT

3 4 5 6 7

[FOR FX970Z]

J9S3

SCART AUDIO OUTPUT BUFFER (Q902,C905,C906, R931,R932,R936)

[FOR GX910Z]

D902

[FOR GX910Z]

1ETU AUDIO(L) 3E

4E 5E

J9A1 J9A2

[FOR GX910Z]

J9A3

J9A4

J9E1

2G 3G 4G 5G

6GVIDEO 1

1JIIC CLOCK 2JIIC DATA

3JA.MUTE "H"

AUDIO MUTING CIRCUIT (Q906,D903,D904,C956,R943)

IC901

BH7635S

13 2414 15 16 17 18 19

IC-BUS CONT.

5V

REG

11109876

12 1

20 22 2321

VCC

CLAMP CLAMP CLAMP

GND

VCC

532

4

[FOR FX970Z]

CLAMP

GND

[FOR FX970Z]

SCART "H" & 16:9 "H" SWITCHING CIRCUIT (Q903,Q908,Q909 R921,R922)

AUDIO-R IN

GND GND

AUDIO-L IN

JK901 [SCART2]

AUDIO-R OUT

22 23

AUDIO-L OUT

24 25 26 27 28

29 30 31 32 33 34 35

[FOR GX910Z]

36

C+

37

GND

38 39

VIDEO OUT

40 41

GND

42

GND

GND GND

VIDEO IN

GNG

JK901

SCART2

42

41

40

39

38

37

36

35

34

33

32

31

30

28

26

24

22

AV2 (DECODER) AV1 IN/OUT(TV) [FOR FX970Z]

29

27

25

23

6J

C+ DET "H"

7J

16:9 "H"

8J

SCART "H"

To SYSCON/ SERVO SECTION

1615

BLOCK DIAGRAM-6 (SYSTEM CONTROL SECTION)

FROM/TO DECK

FROM/TO SCART SECTION

L/D MOTOR

MODE SW

5V

R553

RS501

T-UP REEL

R555

RS502

SUP.REEL

GND

OUT 1

12345

C529

MS501

GND MODE S1 MODE S2 MODE S3 MODE S4

R550

LD501

DECK IR LED

Q515

R558

Q514

R557

IC502

P 1

ZD501

R559

V ret

1 2 3 4 5

T-UP END

R560

IN 1

ES502

END

ES501

KA3082

VCC 1

89

VCC 2

P 2

IN 2

67

12V

C528

10MHZ

32.768KHZ

VR501

PG ADJ

5.3VA

CS501

CST&REC SW

10

X501

X502

X503

L506 R518 C518 C519

GND

OUT 2

FROM/TO AUDIO/VIDEOSECTION

31 32 61 78 25 26 38 39 40 80 81 62 90 91 90

TO POWER SECTION

L505

L507

FROM/TO TU/IF SECTION

1234

IC503

AT24C16

EEPROM

5678

Q503

Q501

34 35 36 37 38 39 40 41 42 43 44

MN12510F

1234

IC5F1

5678

IC505

OUT

9

RESET

23

10 11

GND

2324252627282930313233

22 21 20 19 18 17 16 15 14 13 12

VCC

1

5V

FROM

5VT

POWER SECTION

OSC

VCC

R526

R525

V OUT

321

19 20

77 76 75 74

72 73

70 69

3

10

1 5

4

52 53

51 50

RC5F1

REMOTE SENSOR

CTL-

CTL+ LD(-) LD(+)

MODE SW1 MODE SW2 MODE SW3

MODE SW4 OSC1

OSC2 X-TAL1

X-TAL2 END SENSOR

CAP REV "H"

I - LIMIT

CAP PWM

DRUM PWM

DFG

DPG

CFG

CAP ADJ

DRUM ADJ

IC501

HD3977

PG ADJ

T-UP SENSOR SUPPLY REEL

T-UP REEL

4fsc out 4fsc in

DOSC OUT DOSC IN

R/C

CST SW 'H'

KEY RTN 0

KEY RTN 1

TEST 'H'

Vss(A/D)

82 57 13 14 68 49 33 71 42 41 22

Vss(OSD)

2

IIC CLK

A.MUTE 'H'

C.SYNC(NOR)

CPWR CTL "H"

SECAM DET "H"

S7/ FLD ENV

S6/ FLD DATA OUT

S5/ FLD DATA IN

Vss(SERVO)

Vss(SYS)

Vcc(A/D)

15

IIC DATA

IIC CLK

IIC DATA

V.ENV

V. H/SW

SCART "H"

REC 'H'

DV.SYNC

TIMER "H" C.ROTARY H AMP SW

COMP. IN

CVin

CVout

STAND-BY 'H'

AFT

C.SYNC(INV)

IIC DATA

IIC CLK

IIC DATA

IIC CLK

S4/ FLD CLK

RESE

PWR FA

Vcc(OSD)

Vcc(SERVO)

Vcc(SYS)

91 12 24

58 54 60 79 27

6 66 28 29 30 43 45 88

9 87 81 90 91 90 94 97 96 95 16 89

C501C506 C521C503

OUT

3

RESET

2

GND

C500C505

C561C504

1

VCC

IC504

CH-UP CH-DOWN PLAY OPTB

REC REW PLAY FF STOP P/STILL

L502

5.3VA

1817

SCHEMATIC DIAGRAM-1(POWER SECTION)

A MAIN(POWER SECTION)C.B

FH02

FH01

PW101

0.1/275

L102

33m

C101

0.1/275

F101

T1.6A/250V

POWER CORD

BD101

S1WBA60

BC101

BEAD CORE

C102

R101

2.7 2W

R102

100K 2W

5

Slort

16.1

(16.3)

VCC

OVP

Reg1(9.4V) Reg2(7.2V) Reg3(7.2V)

TSD

Counter

IC101

STR-G6153T

NOTE:ONE VOLTAGE:PB OR REC MODE TWO VOLTAGES:PB AND (REC) MODE

C103

68/400

C122

0.022

OSC

FB OCP

Mirror

FB Curent

Detector

FB

4

4.0

(4.6)

:HOT CIRCUIT

S RQ

D102

ERA22-10

Latch

Drive

Buffer

R104

56K 2W

DROIN

Amp.

OCP

GND

309

1

0

2

0

3

R109

0.35 2W

C105

0.01/630

C106

100P/1K

BC102

BEAD CORE

R103

8.2

C109 33/25

IC102

PC123Y

C111

0.022

3300P/400

220P/400

T101

EER2828

4

D104

EU01W

2

1

4.0

41

0

IC103

KA431AZ

C112

C113

96

10

11

8

7

12

13

15

23

1

2

D109

RU4YXLF

EU01W

ERC81-004L

EU01W

4.9

4.0

3

2.5

0

D108

F103

ICP-N10

D106

D105

R117

2.2K

470/25

4.7 1/4W

D107

ERA18

C115

47/50

R116

R118

C120

FR02

330

1K

L104

22U

C118

220/10

C116

1000/16

L103

22U

C114

0.047

ZD151

MTZ13A

C121

470/25

C119

47/50

R151

1.2K

470/16

R119

3.3K 1%

R120

2.7K 1%

R121

180

C117

14.8 11.9

R114 100K

Q151

KTC3203-Y

12.5

C151

4.7/50

KTC2804-Y

14.8 11.8

C157

10/16

KTC3203-Y

-16.1 -16.0

R154

R161

ZD153

MTZ13A

KTC3198

-27.3

R164

12K

Q156

-15.4

Q158

KTA1268-BL

35.6 35.3

35.0

1K

270

4.5

5.3

4.5

R158

270

Q153

12.4

Q154

-26.6

R155

R162

5.2

KTA1273

5.2

KTA1273

R159

330

-27.3

R166

2.2K

27K

330

Q162

Q159

C152

4.7/50

R171

3.9K

R165

12K

R167

2.2K

D151

1SS133

C159 10/16

R152

1.2K

KRA103M

5.2

5.3

KRC101M

D152

1N4003A

C153

4.7/50

Q155

R

Q157

KRA103M

5.2

5.3

R169

0

R

0

Q160

C123

47/6.3

D154

1N4003A

11.8 9.4

10.0

ZD152

MTZ10C

L105

100U

ZD104

MTZ5.6B

0

R

4.6

1K

5.3

Q164

KSA1273

R156

10K

5.0

Q161

KTC3199-BL

1N4003A

Q152

KTC3203-Y

10.0

R

0

R170

1K

5.3

R157

1K

0

5.0

0

D155

C156 10/16

0

Q165

KRC101M

C155

0.1

R172

12K

C124 22/16

1B

2B 3B

4B 5B

6B

To TUNER/IF SECTION

1A 2A 3A

To SCART SECTION

1A 3A

1C

12.3V(CAP) 12V(DRUM)

2C 3C

4C

-21VG(F-)

5C

-15VG(F+)

6C

STAND-BY "H"

7C

8C

TIMER "H"

9C

10C

11C

PWR CTL "H"

12C 13C

5.3VA

9V

5VT

33VT

5V

GND

1B 6B

12VA

GND

-27VG

5VG

5VT

5V

5.3VA GND

To SYSCON/ SERVO SECTION

1C 13C

1D

5VT

2D

5V

GND

3D

To AUDIO/ VIDEO SECTION

1D 3D

2019

SCHEMATIC DIAGRAM-2 (AUDIO/VIDEO SECTION)

To POWER SECTION

REC "H" H.AMP SW C.ROTARY

A.MUTE "H"

V.H/SW

IIC DATA

IIC CLOCK

DV.SYNC

VIDEO(VPS)

VIDEO(Y/C)

C.SYNC COMP OUT

V.ENV

To SYSCON/ SERVO SECTION

P3D01

SP A PB

SP REC SP B PB LP A PB

LP REC LP B PB

To CYL.HEADS

[FOR FX970Z]

CTL(+)

CTL(-)

To SYSCON/ SERVO SECTION

P3D02

AUDIO PB

AUDIO REC

A/E (+) A/E (-) CTL (-)

CTL (+)

To CTL/AUDIO HEADS

P3D03

F/E

GND

To FULL ERASE HEAD

,

5VT

5V

GND

3D1D

16F3F

2F1F

A MAIN(AUDIO/VIDEO SECTION)C.B

1D 2D 3D

3F 4F 5F

6F 7F 8F 9F

10F

11F 12F 13F 14F 15F

R3A1

2.2K

[FOR FX970Z]

16F

*

1 2 3 4 5 6

2F 1F

6 5 4 3 2 1

2 1

R337

*

R337 15K:GX910Z 18K:FX970Z

79 29 28

62 24 91 90 27

54 30

C3A1

0.022

12

C367

0.022

R3A3

1K

C375

0.1

R431

*

4.7K:GX910Z 22K:FX970Z

C320

1

Q3A2

KTC3199-BL

REC "H"

KTC3199-BL

COMP.OUT

[FOR FX970Z]

79

REC "H"

Q405

KTC3203-Y

R421

2.2

12 V.ENV

Q3A1

30

R431

*

R410

10K

R411

22K

79

RF TP

L307 100U

C373

0.1

[FOR GX910Z]

C431

0.01

KTA1267-GR

Q402

KTA1267-GR

C419

0.01

R350

470

R407

C4A1 22/16

R420

C418

0.015

J3A1

J3A2

*

R3A2

47K

C408

0.015

L402

6800U

22K

Q401

1K

47/6.3

C355

0.01

C346

220/6.3

C302

*

0.047:GX910Z

0.1:FX970Z

R3B1

2.7K:GX910Z

4.7K:FX970Z

C350

0.1 R333 560

R3B1

*

R424 270

KTC3199-BL

R408

2.2K

R409

4.7K

C401

*

R403 R404

R406

2.7K

Q403

L405

R419

C424

C345

0.1

C348

1/50

C302

6.8K 270

10U

47

0.1

[FOR GX910Z]

LA71591M

1.9(4.8)

1.9(0)

1.9(4.8)

4.2(0)

0(0.3)

C466

3.3/50

2.4(1.6)

C410

0.1

2.4(3.3)

C412

0.1

Q404

KTC3199-BL

1

2

3

C420

47/50

C402

0.022

IC301

0

0.7

0

5.0

0

0.2

0

2.3

0

4.9

(4.1)

C413

0.01

C423

4.7/50

BIAS COIL

81

82

83

84

85

86

87

88

89 90

91 92

93

94

95

96

97

98

99

100

R412

1.8K

TL401

R425

R427

47K

R428

R430

3.9K

C-VCC

C-MAIN

Cn-CTL

D.E.

BPF1

P

COMP IN

SERIAL

DECODER

Y-GND

0

9

90 IIC CLOCK

L301

10U

C311 180P

L309 100U

L306 100u

C354

220/6.3

C332 0.01

3.4

5.03.33.43.43.55.05.0

NTSC:H

C-DELAY

Cn-CTL

R

Y/C SEP IN

R

Y.N . R

Y.LPF

R

P

1/2

RR

P

RR P

B.B

CLAMP

4.9 4.9 0

C369

0.022

R335

18K

91 IIC DATA

C312

22P

C335

0.1

0.2

(0.5)

CCD VCC

P

NL

DEEMP

P

PB-C

FBC

SYNC

SEP

Chara

INS

R313 L303

R313

*

330:GX910Z 470:FX970Z

C331

220/6.3

Q304

KTC3199-BL

C336 0.01

12

C COMB

CCD

LC89981/82

DELAY

PROCESSING

CLAMP N.C1 N.C2

PIC-CTL

ANR

PB-Y

Y/C

MIX

P

R

H-PLL

0.1 0.3 0.3

3 610

C370 180P

27 DV.SYNC

33U

*

5.0

1.3

CCD GND

Y DELAY

DELAYED

SYNC

DET

60dB AMP

PB CTLEQTC1

54 C.SYNC

8.2U

L401

C425

2200P

0.1

C403

C422

C406

10/16

C405

10/16

PB/EE

EQ

12K

C421

0.022

R415 330K

R416

C415

R

P

150

22/16

R402 2.2M

5.02.402.42.5

A-VCC

ALC

REC

FM

AGC2

AUDIO SIGNAL PROCESSING

Vref

PB/EE REC:EP/LP PB:EP

2.4 2.4 0 0 1.0 1.7

(2.4)

5

C416

R417

2200P

1K

C417 1200P

V.H/SW TP

R418

27K

R422

560

2.4

(1.9)

80 5179 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52

Vref

H.A

2.3V

GND

H.A GND

RF

H.A GND

HEAD AMP

PROCESSING

REC FM AGC2 DET

ENV DET

COMP

OUT

A.GND

LINE

MUTE

AMP ALC

DET

Vref

2.3V

AMP

1 30

2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29

2.4 2.4 2.5 2.4 0.1

R413

8.2K

R414

C414

0.01

6

5

4

R323

1.8 (0)

R

KIL

PB FM

AGC

PB FM

EQ

AMP

SP

4 15 14

C368

1000P

R490

R491

47K

12K

R305

*

1.5K:GX910Z

1.2K:FX970Z R309

*

750:GX910Z 680:FX970Z

R338

*

270:GX910Z 220:FX970Z

5.6K

C344

R324 10K

11

2.53.23.4

DET

P

BPF

NAP

KIL

B.D.

VXO XO

REC FM

AGC1

R

P

PROCESSING

PB EQ THROUGH

LP/EP

A-MUTE/

C+ROT

R302 10K

R303 18K

62 A.MUTE

28 C.ROTARY

* *

C342

C343

0.047

0.022

2.0

(2.9)

SECAM DET

PAL M DET

KIL

320/321FH VCO

SUB

CONV

BALANCE

FM

RFSW/

HASW IN

REC

S-FM IN

5.1

(2.7)

C301

R304 10K

R340 18K

24 V.H/SW

29 H.AMP SW

C301

0.047:GX910Z

0.1:FX970Z C310

10/16:GX910Z

4.7/50:FX970Z

0.01

C-GND

MAIN

CONV

BPF2

REC

FM EQ

FM AGC

*

C376

0.022

4.43MHz

PILOT

P

R

P

DET

1.5

X301

BG

D.E.

S-VHS:OPEN

ACC DET

(1.5)

C3B1

0.033

C305

0.1

8.2K

R322

1/50

C358

8

(1.4)

2.73.800.6

VXO2 VXO1

NTSC-M

PHASE

ALT

REC

APC

ID DET

C-LPF

B-UP AMP

FM

MOD

W/D

CLIP

BAL/TCI

Y-VCC

1.9

2.3 5.1

1

C303

R306

330

4.3(3.8) R341

(1.7)

3.3K

C334

220/6.3

C341

13

2.1

REC APC DET

REC

AFC

R

P

REC BGA

AGC DET

ACC

SUB

LPF

FM

DEM

DOUBLE

LIM

(0.2)

0.01

C306

R305

*

L302 56U

1.2

R307

330

C304

220/6.3

0.022

C340

0.033

P

R

BEFORE

AFTER

R

P

3.0

27P

C307

L308 12U

5.6K

R349

CON

[FOR GX910Z]

1.5K

R326

R321

C339

4.7/50

320FH

VXO

COMB

AMP

NON CORR MES

CORRE

P

V/I

DETAIL

ENH

NL

EMPHA

R

CLAMP

(2.5)

1.9

1.1

(2.5)

R308

2.7K

R309

*

R338

C363

39P

1.8(2.3) Q301

KTC3199-BL

Q302

KTC3199-BL

5.1

1.3

(1.9)

C374

0.1

2.7K

To SEC DET

PB BGA BEFORE

PB BGA

AFTER

P

R

P

R

3.0

*

C309 330P

22P

C353

2.2

(2.5)

R310

1K

1

C338

SLD

D.E.

P

C310

0.022

(2.5)

2.2

*

C371

0.1

CCD

LPF

R

R312

1.8K

C337

R311

4.7K

4.7/50

2.602.65.1

SIGNAL

1.9

16

ALWAYS

EE

AGC

1.7 (2)

150

R316

5V

1212

1.9

0

50

0.9

49

2.2

48

9.5

47

1.6

46

1.5

(2.3)

45

0

44

2.1

43

2.8(3.1)

VCA

42

DET

3.0

41

5.1

40

4.1

5V

REG

39

2.2

38

(4.7)

SYNC

37

DET

(3.3)

36

(3.4)

AFC

35

DET

(3.3)

34

AGC

1.9(1.3)

TC2

33

1.5(2.3)

32

2.9

31

1.1

(4.4)

C314

0.1

1.7(0.6)

D301

1SS131

*

79 REC "H"

5VT

C330

0.01

C329

0.01

C328

0.047

C313 100P

C326 10/16

7

C325

1

C322

47/6.3

1.6

C319

0.1

1.8

C318

1.3

2.2/50

1.8

C316

10/16

2

C315 10/16

2

R317

*

R317 100K:GX910Z 120K:FX970Z

5V

KTA1267-GR

1.6

C327

1

C317

0.01 R318

4.7K

R325

1K

2.4 Q305

KTA1267-GR

0

C324

0.1

2

Q303

R319

1K

2.6

(2.2)

0

L304 100U

C351

0.1

C323

47/6.3

1G 2G

AUDIO 2

3G

AUDIO 1

6G 5G

MONO AUDIO

4G

To SCART SECTION

VIDEO 1 VIDEO 2

6G1G

:PB Y SIGNAL :PB CHROMA SIGNAL

:PB VIDEO SIGNAL

:REC Y SIGNAL :REC CHROMA SIGNAL

:REC VIDEO SIGNAL

:PB AUDIO SIGNAL :REC AUDIO SIGNAL

ONE VOLTAGE:PB OR REC MODE

*

TWO VOLTAGES:PB AND (REC) MODE

: WAVEFORMS No.

2221

WAVEFORM-1 (VIDEO SECTION)

1

IC301 Pin 20 PBmode 500mvp-p

5

IC301 Pin 6 REC mode

2.2Vp-p

2 3

IC301 Pin 38, 31, 32 Video in 1Vp-p

6

IC301 Pin

29

PB mode

2.1 Vp-p

IC301 Pin

28

PB/REC mode

4.2Vp-p

7 8

IC301 Pin

41

PB mode 400mVp-p

4

IC301 Pin 7 REC mode

1.4Vp-p

IC301 Pin PB mode 600mVp-p

64

9

10

IC301 Pin 23 PB/REC mode 5Vp-p

13 14

IC301 Pin

63

PB mode 600mVp-p

IC301 Pin 24 PB/REC mode 5Vp-p

IC301 Pin 11 PB mode

3.2Vp-p

11 12

IC301 Pin

71 , 72

REC mode 340mVp-p

15

IC301 Pin

10

16

PB mode

1.8Vp-p

IC301 Pin 51 , PB mode 300mVp-p

IC301 Pin 43 PB mode 400mVp-p

52 , 54

23

WAVEFORM-2 (SERVO/OSD SECTION)

1

IC501 Pin 24 1V/5mS REC/PB mdes (V.H/SW)

5

IC501 Pin 38 1V/1mS REC/PB mode (DFG)

5

2

IC501 Pin 1V/2mS QUE/REV modes (D.V-SYNC)

6

IC501 Pin 1V/10µS REC/PB modes (DPG)

6

3 4

27

IC501 Pin 1V/10mS REC mode (CTL+)

7 8

39

IC501 Pin 1V/1mS REC/PB modes (CFG)

31

IC501Pin

32

1V/10mS REC mode (CTL–)

40

IC501 Pin

43

100mV/10µS EE/PB modes (V-IN)

IC501 Pin

45

500mV/10µS EE/PB modes (V-OUT)

IC501Pin 1V/20µS EE/PB modes (C-SYNC)

TRANSISTOR ILLUSTRATION

E C B

KRA103M KRC101M KRC103M KTA1267 KTC3198 KTC3199

54

E C B

KTA1268 KTC3203

E C B

KTA1273 KTC2804

24

SCHEMATIC DIAGRAM-3 (SYSTEM CONTROL/SERVO SECTION)

A MAIN(SYSCON/SERVO SECTION)C.B

IC502

PML01

LD+ LD-

To LOADING MOTOR

PMD01

D.CTL M.GND

DFG

12V

PG

GND

5.1V

To LOWER DRUM C.B PDM01

PMC01

GND

MOTOR GND

I.LIMIT

CAP.CONTROL

12V

CFG

CAP.REV "L"

5.1V

To CAPSTAN MOTOR C.B PCM01

MS501

GND MODE S1 MODE S2 MODE S3 MODE S4

To MODE SW

1 2

1 2 3 4 5 6 7

R505 1K

8

1 2 3 4 5

C546 47/16

C525 47/16

R575 4.7K

KA3082

MOTOR DRIVE

12V(DRUM)

GND

1

0 0.4 0.8 0.3 2.2 2.2 12.2 12.2 0.8 0.4

R524

6.8 1W

C530

10/16

MOTOR DET

2345678910

ZD501

MTZ6.8C

D509

1SS133

R569

1M

81

78

61

C526 47/25

5.3VA

R576 4.7K

R577 4.7K

R578 4.7K

R5C1 1K R5C2 1K R5C3 1K R5C4 1K

R553

220

3

RS501 SG233

T-UP/REEL

R555

220

3

RS502

SG233

S-UP/REEL

*

80

2200P

77 76 75 74

5.1V

R550

220

21

DECK IR LED

4

21

LD501

ES501

ST5811-A,B

T-UP END

ES502

ST5811-A,B

SUP END

4

ONE VOLTAGE:PB OR REC MODE TWO VOLTAGES:PB AND (REC) MODE

: WAVEFORMS No.

R535

C522

0.01

R546

5.6K

C543

12V(CAP)

C529

470K

C545

0.1

R521

3.3K

5.3

C516

0.022

5.3VA

C528

0.01

R526

0.1

5.6K

R525

5.6K

19 20

5.3VA

R523

15K

C551

0.033

R563

10K C544

0.047

R528

10K

R547

12K

R506 1K R522 1K R512 1K

C574

1000P

C567

3900P

PG ADJ

R579

56K

25

26

R5E8 10K

R5E7 10K

C557 0.01

C502

47/6.3

VR501 220KB

R5C9

C556

0.01

IC504

KIA7031P

RESET

GND

3

0

R531

10K

12

38 40 39

C575

1000P

C509

0.022

C507

0.1

C508

0.1

VCC

5.3

5V

R5C5

R557

27K

R556

22K

R564

27K

R558

22K

C536

0.01

C537

0.01

R560

H/L

1K

4.7K

R559

4.7K

R5B3

H/L

R

KRC103M

0

R5C7

R5B4

H/L

R

0

1K

Q514

1K

Q515

KRC103M

C534

4.7/50

C581

0.01

C535

4.7/50

C582

0.01

1

4

3

5

5.304.6(5.2)

8765

VCC

GND 1

000

1

3 4 5 6

9

R507 1K

12

R543 100

13 14

R5B5 100

18 19 20

21

24 25 26 27 28 29 30

31

C533

1000P

32

R5A1

68K

55

R5A2 120K

C5S1

43P

45

56

9190

100

R502

4.6(5.2)

CLK

GND

DATA

GND

234

0

R586 2.2K R545 2.2K

R510 2.2K R508 3.3K

3.2(1.6)

0.7(0) 4(2.3)

R561

560

C527 180P

KTC103M

L5S1

33U

R5S2

6.8K

100

R501

[FOR GX910Z]

AT24C16 EEPROM

0

1

0

2

0.8

3

H/L

4

H/L

5

3.3

6

1(2)

7

1(2)

8 9

2.2

10 11 12

5.3

13

5.3

14

5.3

15

5.3

16

0

17

0

18

5.2

19

5.2

20

5.2

21

5.3

22

H/L

23

H/L

24

2.8

25

2.7

26

0

27

H/L

28

5.2

29

5.0

30

R562

560

Q5A1

Q5S2

KTC3199-BL

99

98

94

92

86

DJ02 1SS133

DJ01 1SS133

DJ06 1SS133

DJ03 1SS133

[FOR GX910Z]

DJ08 1SS133

DJ09 1SS133

[FOR GX910Z]

IC503

5VT

5.3VA

97 9695 94 93 92 91 90 8788 81

00000

100

T-UP SENSOR VSS(A/D) END SENSOR T-UP REEL SUPPLY REEL SEC DET "H" NC NC AFT PG ADJ NC V.ENV KEY RTN 0 KEY RTN 1 VCC(A/D) RESET NC TU SECAM VL "H" LD (-) LD (+) C+ DET "H" VCC(SYS) NC V.H/SW CAP.PWM DRUM PWM D.V-SYNC C.ROTARY H.AMP SW COMP.IN

3

31

2.3(3)

R568 680K

2.2

R5A3

56K

5.2

4.6

5.3

5.0

5.1

99 9897 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81

NCNCNC

FLD CLK

FLD DATA IN

FLD DATA OUT

HD3977 RC06F

SYSCON/SERVO

NC

IIC DATA

FLD ENA

IC501

PROCESS

4.904.70000

IIC CLK

PWR FAIL

1

2

7

5

89

6

CTL+

CTL-

VSS(SERVO)

CTL1

CTL2

CTL3

CTL OUT

DFG

DPG

CFG

VCC(SERVO)

32 3334 35 36 37 38 39 40 41 42 43 44 45

0

2.3

4

R527

560

C524 33/16

R519

27K

C5S2

0.022

R5S3

330

2.3

38 39 40 43 45

2.3

C564 330P

---

C596

0.022

R513 100K

5.2

VCC(OSD)

5.0

C.SYNC(INV)

STAND BY "H"(3W LED)

CV IN

VREF(OSD)

2.4

1.4

2.402.0

C588

4.7/50

C503

0.1

63

DJ16 1SS133

[FOR GX910Z]

5.1

2.6

NCNCNC

NC

R/C

DRUM

CAP ACCEL "H"

REC "H"

I-LIMIT MODE SW1 MODE SW2 MODE SW3 MODE SW4

VSS(SYS)

X-TAL1

X-TAL2

TEST "H"

OPT RTN(CTL MON)

TIMER "H"

TSS "L"

16:9 "H" TU SEC "H" A.MUTE "H"

CAP.REV "H"

PWR CTL "H"

OSD"H"

SCART "H"

CST SW "H"

SEC/MEC "H"

CTL GAIN ADJ

C.SYNC

10

4fsc in/2fsc in

4fsc out/2fsc out

CV OUT

CHAR BIAS

AFC LPF

AFC OSC

VSS(OSD)

D OSC

46 47 48 49 50

1.401.3

C512 180P

R567

820

C513

0.1

C504

220/6.3

62

DJ17 1SS133

ADJ

2.8

80

0(4.9)

79

3.1

78

2.3(5.3)

77

5.3

76

0

75

5.3

74

2.5

73

OSC2

2.5

72

OSC1

0

71

0.8

70

1.5

69

0

68

4.6

67

0

66

5.2

65

5.2

64

0

63

0

62

0

61

5.2

60

0

59

5.2

58

5.1

57

0

56

5.2

55

0.4

54

2.4

53

2.5

52

1.4

51

D OSC

OUT

IN

C589

82P

C541

4.7/50

L507

100U

R511

1K

C542 680P

87

C521

0.022

67

R581

R5B1

68K

1K

REMOCON SENSOR

80 79 78 77 76

R515

75 74 73 72

67 66 65

64 63 62

R5C6

61

60

59 58

56

55

54

R509

27K

R518

560

C561

47/6.3

3

270

X501

10MHz

X502

32.768KHz

1K C552

0.01

X503

17.734MHz

L506 15U

L505 100u

12V(DRUM)

IC505

KIA7042P

VCC

1

5.3

R504

1K

RC5F1

V OUT

VCC

C5F7

47/6.3

R534

1M

CS501

CST/REC.SW

R548 100K

R589

1M

GND

0

12

R517

1M

GND

0

RESET

32

1000P

R570

4.7K

C520

R5H2

330

C570

18P

C571

18P

C515

15P

C514

18P

R544

4.7K

C576

14P

C577

14P

C519

39P

C518

33P

5.3VA

DIG5F1

REC TIMER

VCR M REM BILSAP Hi-Fi ST

SP LP EP

F- F- NP NP 9G

1 2 3 4 5 6 7 8 9 101112131415 161718192021222324252627282930313233

R5F0

10

34 35 36 37 38 39 40 41 42 43 44

C510

47/16

D502

1SS133

8G 7G 6G 5G 4G 3G 2G Nx Nx Nx Nx Nx Nx P16 P15 P14P13P12 P11P10 P9 P8 P7 P6 P5 P4 P3 P2

R5F1

10

131415 12 10 9 8 7

2 1 44 43 42 41 40 39 38 37 36 35 34 33 32 31

R5F6

1K

R5F5

33 32 31

1K

33 32 31 30 29 28 27 26 25 24 23

P3P2P1

34

P4 P5

C532

0.022

R5G0 27K

R5G1 27K

MTZ6.2B

C500

0.047F/5.5

R5G2 27K

ZD503

C501

0.1

R5G3 27K

R5G4 27K

[FOR FX970Z][FOR GX910Z]

R5G5 27K

C506

0.022

C500

470/6.3

R583

10K

R529

R5G6 27K R5G7 27K

5V

L501 T/W

10K

35

P6

36

P7

37

P8

38 39

P9 P10

40

P11

41

P12

42

P13

43 44

P14

C505

47/6.3

12V(DRUM)

12V(CAP)

5.3VA

KTA1267-GR

5.2

4.4

R542

2.2K

0.8

1

L502 100U

Q503

SHUTTLE4

SHUTTLE3

SHUTTLE2

IC5F1

MN12510

SHUTTLE1

POWER LED

LED DRIVE

P15

P16NCNCG1G2G3G4

2345678910

R5H0

27K

12 768910

C5F4

5.3

0

Q501

KTC3199

BL

0

DATA OUT

0.1

9796 95 94

R5F8

27K

R5F7

1K

CLK

22

ENA

DATA IN

21

VSS

20

OSC2

19

OSC1

18

VDD

17

VPP

16

G9

15

G8

14

G7

13

G6

12

G5

11

C5F8

47/6.3

ZD5F1

MTZ5.1B

R5F9

1K

X5F1

4.0MHz

15 14 13 12

R5F2

15

R5H1 56

PMK01

1

GND

2

OTPB "H" 3 4 5

1 2 3 4 5 6 7 8 9

10

1H 2H 3H 4H 5H

6H

TU SECVL "H"

7H 8H 9H

1J 2J 3J 4J 5J

6J 7J 8J

1F 2F 3F 4F 5F

6F 7F 8F 9F

10F

11F 12F 13F

14F 15F

16F

1C 2C 3C 4C 5C

6C 7C 8C 9C

10C 11C

12C 13C

5VA

KEY RTN 1

GND

To C FRONT-2 C.B PKM01

PMK02

GND

KEY RTN 0

To B FRONT-1 C.B PKM02

OSD VIDEO

IIC CLK

IIC DATA

VIDEO(VPS)

TU SEC "H"

IIC CLOCK

AFT

IIC DATA To

TUNER/IF SECTION

8H1H

IIC CLOCK

IIC DATA

A.MUTE "H"

C+ DET "H"

16:9 "H"

SCART "H"

To SCART SECTION

8J1J

CTL(-) CTL(+)

REC "H" H.AMP SW C.ROTARY

A.MUTE "H"

V.H/SW

IIC DATA

IIC CLK

DV.SYNC

VIDEO(VPS) VIDEO(Y/C)

C.SYNC

COMP IN

V.ENV To

AUDIO/ VIDEO SECTION

16F1F

12.3V(CAP) 12V(DRUM)

-27VG

-21VG(F-)

-15VG(F+)

STAND-BY "H"

5VG

TIMER "H"

5VT

5V

PWR CTL "H"

5.3VA GND

To POWER SECTION

13C1C

14

F+F+NPNPP1

3837363534

R5F3

15

13

45

63

18

90

9

91

91 62

21 64 58

32 31 79 29 28

62 24 91

27

90

43

6

54 30

R590

1K

R591

470

R592

100

12

88

66

60

2625

SCHEMATIC DIAGRAM-4 (TUNER/IF SECTION)

A MAIN(TUNER/IF SECTION)C.B

1B

5.3VA

2B

To POWER SECTION

1B 6B

9V

5VT

33VT

5V

GND

3B 4B 5B 6B

L702

10U

C705

0.01

C704

47/6.3

L705 100U

C714

0.01

C713

47/6.3

WAVEFORM-3

1

TU701 Pin 19 (IF Signal)

2

To SCART SECTION

1E 5E

To SYSCON/ SERVO SECTION

1H 9H

TUN.AUDIO

MOD.AUDIO

VIDEO

TU VIDEO

OSD VIDEO

IIC CLOCK

IIC DATA

VIDEO(VPS)

TU SEC "H"

TU SECVL "H"

IIC CLOCK

AFT

IIC DATA

1E 2E 3E 4E 5E

1H 2H 3H 4H 5H

6H 7H 8H 9H

L7V1 100U

C7V1 47/16

IC7V1

LC74793

17.734476MHz

C7V7

1/50

5.1 5.0 4.5 0 5.0 5.1 4.6 2.5 2.9 5.1 0.2 1.3

24 23 22 21 20 19 18 17 16 15 14 13

VDD1 RST

V.Sync

C7V3

12P

Detect

C7V4

12P

Sep.

Sync Sep/

Data

Sync

Sucer

NC VSS2

Timing

Generator

VSS1

123456789101112

0 2.6 2.6 0 0 5.2 5.2 5.0 4.6 0 3.0 3.0

C7V8

1/50

IIC BUS

Interface

C7V6

4.7/50

X7V1

C7V2 1

VDD2

AFC

(VCO)

R7V6

5.6K

Acousition

C7V5

0.056

Data

Latch

Data

R7V5

10K

R7V4

2.2K

C702 10/16

C701

4.7/50

L701

100U

L703 10U

C706

470/16

R704

470

KTA1267-GR

ZD701

MTZ33B

Q701

[FOR FX970Z]

C707

0.01

C7M5

10/16

R706

220

R707

220

R7M1

1K

R7M5

220

C7M2

47/16

C710

C7M1

C7M3

C7M6

27P

43P

100P

43P

R7M3

1K

C703

4.7/50

TU701

5.3

1

BB

0

AUDIO

2

5.1

SDA

3

5.2

4MB

4

5.2

SCL

5

0

VIDEO

6

32.3

MD TU

7

2.6

RF AGC

8

0

NC

9

0

AS

10

5.1

SCL

11

5.2

SDA

12

5.0

B+

13

5.0

B+

14

0

NC

15

32.3

TU

16

0

TP

17

0

1

IF

18

5.1

SW 1

19

0

SW 2

20

2.4

4

AUDIO

21

0

3

SIF

22

2.5

AFT

23

1.3

2

VIDEO

24

0

NC

25

TU701 Pin 24 (Video Signal)

3

TU701 Pin 22 (SIF Signal)

4

TU701 Pin 21 (Audio Signal)

:PB VIDEO SIGNAL :REC VIDEO SIGNAL

:PB AUDIO SIGNAL :REC AUDIO SIGNAL

: WAVEFORMS No.

ONE VOLTAGE:PB OR REC MODE

*

C712

5.6P

L704

8.2U

2827

SCHEMATIC DIAGRAM-5 (SCART SECTION) <FOR FX970Z>

12VA

GND

To POWER SECTION

A MAIN(SCART SECTION)C.B

JK901 [SCART1]

R902

75

SCART H

8

9 10 11 12 13 14

AUDIO-R OUT

1

AUDIO-R IN

2

AUDIO-L OUT

3

GND

4 5

GND

6

AUDIO-L IN

7

1A 2A

3A

ONE VOLTAGE:PB OR REC MODE

*

3A1A

TWO VOLTAGES:PB AND (REC) MODE

C958

39P

R901

75

:PB VIDEO SIGNAL :REC VIDEO SIGNAL

: VIDEO SIGNAL :PB AUDIO SIGNAL

:REC AUDIO SIGNAL

C9A1

1000P

R903

560

R905

560

R904

560

R906

560

L904 100u

L902 100u

1000P

L901 100u

L906 100u

C904

C901

1000P

C903 1000P

C908

1000P

GND

GND GND

15 16 17 18 19 20 21

GND GND

VIDEO OUT

VIDEO IN

GNG

L903

1u

L905 BEAD CORE

D902

1SS133

JK901

SCART1

21

20

19

18

17

16

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

MOD.AUDIO

VIDEO

TU VIDEO

To TUNER/IF SECTION

5E1E

AUDIO 1

MONO AUDIO

VIDEO 2

To AUDIO/ VIDEO SECTION

6G1G

To SYSCON/ SERVO SECTION

5J1J

JK901

1ETU AUDIO(L) 2E 3E 4E 5E

1G 2G 3G 4G 5G

6GVIDEO 1

1JIIC CLOCK 2JIIC DATA

D904

D903

R943

1SS133

1.5K

3JA.MUTE "H"

4J 5J

1SS133

C956

0.1/50

Q906

KTC3199-BL

IC901

BH7635S

R947

330

R950 100 R949 100

C941 10/16

R948

330

C912

C945

C944

C943

10/16

5V

REG

10/16

C955

10/16

12.0

VCC

CLAMP CLAMP CLAMP

GND

0

C948

10/16

C953 10/16

10/16

13 2414 15 16 17 18 19

IC-BUS

CONT.

11109876

12 1

C946

C947

10/16

1/50

C942

470/16

C958

39P

20 22 2321

GND

VCC

532

4

12.0 C949

0.1

0

C902

470/16

CLAMP

C952

0.1

C950

10/16

C951

47/16

C919

82P

R911

75

R912

75

R915

560

R916

560

C914

1000P

AUDIO-R OUT

22 23

AUDIO-L OUT

24 25 26 27 28

R913

560

R914

560

C913

1000P

AUDIO-R IN

GND GND

AUDIO-L IN

L911 100u

L914 100u

L912 100u

L916 100u

JK901 [SCART2]

29

GND

30 31 32 33

GND

34

GND

35

C911

1000P

C918

1000P

36

C+

37 38 39

VIDEO OUT

40

VIDEO IN

41 42

GND GND

GNG

L907

BEAD CORE

R933

12K

R934

10K

SCART2

42

41

40

39

38

37

36

35

34

33

32

31

30

29

28

27

26

25

24

23

22

6J C+ DET "H"

7J

8J

To SYSCON/ SERVO SECTION

AV2 IN(DECODER) AV1 IN/OUT(TV)

8J6J

C909

43P

3029

SCHEMATIC DIAGRAM-6 (SCART SECTION) <FOR GX910Z>

R

1 2 3 4 5

1 2 3 4 5 6 7 8 9

10

GND

OTPB "H"

5.3VA GND

KEY RTN 1

PKM01

R5A9

120

LD5A1

SG5311

Q5A1

KRC103M

SW5A7

CH UP

LD5A1

ONE-TOUCH

PLAYBACK

SW5A8

CH DOWN

SW5A9

SW5A6

SW5A5SW5A4

SW5A3

SW5A2

SW5A1

R5A6

1.8K

R5A7

1.5K

R5A8

2.2K

R5A5

3.9K

R5A4

2.7K

R5A3

2.2K

R5A2

1.5K

R5A1

1.8K

GND

K.RTN 0

PKM02

C FRONT-2 C.B

B FRONT-1 C.B

To A MAIN C.B SYSCON/SERVO SECTION PMK01

()

To A MAIN C.B SYSCON/SERVO SECTION PMK02

()

REC/OTR REW/

PLAY

/F FWD

STOP

PAUSE/

STILL

POWER STANDBY/ON

SW5A0 ONE-TOUCH

PLAYBACK

A MAIN(SCART SECTION)C.B

GND

1A 2A

3A

3A1A

C951 47/16

C952

0.1

C958

39P

C902

470/16

C958

39P

R931

10/16

1ETU AUDIO(L) 2E 3E 4E 5E

5E1E

1G 2G 3G 4G 5G

C906

180K

R932 220K

R936

1K

Q902

KTC3199

C905

10/16

C9A1

1000P

R903

560

R905

560

R904

560

R906

560

12VA

To POWER SECTION

MOD.AUDIO

VIDEO

TU VIDEO

To TUNER/IF SECTION

AUDIO 2 AUDIO 1

MONO AUDIO

VIDEO 2

L904 100u

1000P

R901

L901 100u

L902 100u

L906 100u

C904

75

R90275L903

C901

1000P

C903 1000P

C908

1000P

1u

L907

BEAD CORE

L905 BEAD CORE

D902

1SS133

SCHEMATIC DIAGRAM-7 (FRONT-1 C.B)

JK901

SCART1

21

20

19

18

17

16

15

14

13

12

11

10

9

7

5

3

1

8

6

4

2

AV IN/OUT(TV)

SCHEMATIC DIAGRAM-8 (FRONT-2 C.B)

To AUDIO/ VIDEO SECTION

To SYSCON/ SERVO SECTION

6GVIDEO 1

6G1G

1J 2J

R943

1.5K

3JA.MUTE "H"

4J 5J

5J1J

D903

1SS133

:PB VIDEO SIGNAL :REC VIDEO SIGNAL

: VIDEO SIGNAL :PB AUDIO SIGNAL

:REC AUDIO SIGNAL

D904

1SS133

0.1/50

C956

Q906

KTC3199

Q908

KRC103M

AUDIO-R OUT

1

AUDIO-R IN

2

AUDIO-L OUT

3

GND

4

GND

5

AUDIO-L IN

6 7

Q909

KRA103M

R

JK901 [SCART1]

SCART H

8

9 10 11 12 13 14

R921

GND

GND GND

820

Q903

KRC103M

15 16 17 18 19 20 21

R922

1K

R

GND GND

VIDEO OUT

VIDEO IN

GNG

6J

7J

8J

16:9 "H"

SCART "H"

To SYSCON/ SERVO SECTION

8J6J

3231

WIRING-1 (MAIN C.B SECTION) <FOR FX970Z>

1

A

B

C

D

234567

8

9

10

11 12 13

14

E

F

G

H

I

J

3433

WIRING-2 (MAIN SECTION) <FOR GX910Z>

1

234567

A MAIN C.B

A

B

C

D

E

F

G

H

I

J

BR

BL

PW101

FH01

F101

FH02

R102

BC101

R109

24

R103

C122

D102

C106

BC102

15 13 12 11 10 9 8 7

D106

L104

L103

C152

ZD153

B C

R158

Q159

E

L105

D107

R167

B C

R166

E

Q156

D153

R169

R170

R5F2

R5H1

5.1B

To B FRONT 1 C.B

D105

ZD104

F103

C109

D104

C112

C115

C119

C116

R114

C155

C118

B C

Q164

E

C117

PKM02

C101

BD101

IC101

135

R104

T101

FR02

C120

C121

C157

E C

R159

B

Q161

E C

Q154

B

E C B

Q157Q155

R5F3

R560

L505

157910 3

D108

R156

R171

ZD151

R164

E C B

C103

C111

C105

Q158 E C B

Q153

E C B

C151

E C B Q165

PMK02

R154

C534

Q151

B C E

ZD152

R165

Q514

R556

D109

R172

B C E

R101

6421

R557

C153

R162

Q162

B C

R161

E

C581

C561

C102

IC102

14

32

C114

R116

R117

21

R121

ES501

C536

R5C5

R151

D151

C504

R119

R155

F105

D152

CB

R157

D154

C124

E

R503

Q152

R120

C159

ECB

Q160

C156 R152

R5B3

C521

L102

3

D509

C525

ZD501

C530 C528

C526

D155

R118

IC103

L524

R506

R535

R569

R577 R576

R575 C522 R523 R521

R578

C544

R522 R546

R553

1

3

5

7

9

10

IC502

C551

8

C543

R5C1

To CAPSTAN MOTOR PCM01

PMC01

R563

C545

C529 R525

R526

7

5

6

4

2

R505

R512

MS501

R5C2

R5C3

C542

C5F7

R5H2

MS501

To MODE SW

3

PMC01

1

R528

R5C4

To LOADING MOTOR

PML01

R335

1

2

PML01

C320

135

31

C375 C367

R337

C541

RC5F1

2

REMOTE SENSOR

C424 C418C370

C513 C512

C420

R420

R421

C419

L304

ECB

C575

ECB R567

R411

R3A3

R419

34

B C

1

E

Q405

C323

Q303

C313 R319

R304

R340

C567

C574

R513

C503

Q5A1

R5A2

C524

R5A1

31

RS501

R581

C518

C519

R490

E

C

Q402

B

TL401

C326

R318

C325

C368

R303

42

R5B1

L506

R517

38373433

Q401

R407

R410

6

C317

R302

C376

C588

X503

R589

X502

R518 X502

R511

PMK04

E C B

L405

R491

C421

C318

C374

C596

C577

DJ10

R406

C316

50

X501

C514

C410

R422

P3D02

R527 C564

45

51

55

C576

DJ11

To CTL/AUDIO HEADS

P3D02

R404

C4A1

R313

6

4

5

3

C315

R325

C327

R5A3 R568

C527

R519

35

40

60

65

C570

C515

DJ12

31

C466

L303

1

C324

31

70

R515 R534

C571

29

C423

C309

2

C319

R562

75

R424

R403

R307

C363

C304

L301

R311

C312

Q305

ECB

C322

C372

R561

30

IC501

80

27

25 23

R305

Q302

C

25

E

B

C533

81

L302

C307

E C B

R309

C310

R312

C311

D301

R316

20

15

90

85

DJ09

21

DIG5F1

DISPLAY

L402

C408

Q301

L308

R338

R308

C306

C305

R310

C369

30 25 20 15 10 5

C314

31 35 40 45 50

R317

C352

C351

LD501

10

5

1

100

95

19

R341

C301

C328

C330

L309

C546

C303

C329

8

R306

C3B1

C501

R349

C353

C371

R5G0

R414

C414 R415

R416

C416

R418

C417

C412

R417

1

IC301

51 55 60 65 70 75

C331

L306

C508

D502

R5G1

R5G2

1211 9

C413

C332

C333

R579 R547

3033

40 44

R5G3

R413

Q304

C336

23

R412

C415

C354

E C B

IC5F1

R5G4

7

C355

Q404

B C E

R3B1

81859095100

80

C344

5

PMK03

R431

B

C

E

C335

C338

R326

15

9

To LOWER DRUM PDM01

PMD01

C431R409

R408

Q403

R333

C346

C340

C337

R321

121522

11

R5G7

R5G5

R5G6

1

2

PMD01

03A2

B C E

C348

C345

R5H0

C

Q902

E

C406

C339 C343

R322

R555

1

B

C906

C302

1

R507

2

C342

C5F4

LD5F1

26

7

R931

R932

R936

C350

R350

3

P3D01

R402

R324

C358

C341

R543

ZD503

6.2B

RS502

31

R5F7 R5F9

R5F8

10

To CYL.HEADS

P3D01

L904

C903

C905

C405

L401

R323

R320

C557

C532

42

R5F5

C904

R905

C402 C401

L307

X301

DJ06

DJ08

L907

L906

C422 C403

L902

R906

C334

C373

R5F6

11 12 13

JK901

AV IN/OUT (TV)

135 7911 13 15 17 19 21

246 81012 14 16 18 20

C908

L901

C901

R904

R903

C425

R428

R427

R430

C582

R545 R586

X5F1

R425

L941

C909

R550

R5B5

R5B4

R5F1

C952

R5E7

R5E8

Q515

R559

B C E

578

IC503

DJ01 DJ02 DJ03

CST/TAP.SW

C5F8

R5F0

R509

C556

143

CS501

C589

R558

C507

6.2B

R501

C516

ZD9A1

R5S2

R502

R510

JK901

DJ017

R5C9

R5C6

DJ016

C5S2

R508

C500

1 2 3

IC504

R548

CS501

D902

C951

R5S3

B C E

Q5S2

R531

C552

3635

R570

P3D03

C701

C5S1

L5S1

CB

Q503

ECB

C502

C520

R544

2

E

R583

IC505

R504

14

ANTENNA

AERIAL

L903

C958

L913

R901

R921

1

E

C

B

Q909

Q908

ES502

C537

R564 C535

R590

R5C7

C510

PG.ADJ

VR501

R542

C509

Q501

R529

L502

C505

3 2 1

C506

E C B

L905

R922

Q903

C702

R902

C706

L703

C942

R7M1

C713

C902

C712

L702

L705

C7M2

C7M5

R704 L701

C956

D903

R943

C704

R7M3

C7M6

E

CB

Q701

C703

D904

C9A1

1

3

5

7

8

10

12

14

16

18

19

21

23

24

Q906

135

CB

R592

TU701

E

R591

PMK01

C710 R706

R707

GRN

ORG

RF OUT

C705

C7M1 C7M3

C714 C7M4

R7M5

C707

L704

To FULL ERASE

P3D03

HEAD

To C FRONT 2 C.B PKM01

WIRING-3 (FRONT-1 C.B)

1

234567

A

SW5A1

REC/OTR

B

SW5A4

C

/F FWD

SW5A3

PLAY

B FRONT-1 C.B

SW5A1

SW5A6

SW5A4

R5A3

R5A4

R5A5

R5A1

SW5A3

R5A2

SW5A5

SW5A2

SW5A6

PAUSE/STILL

/

SW5A2

/REW

SW5A5

STOP/EJECT

/

D

10 57931

PKM02

E

To A MAIN C.B PMK02

WIRING-4 (FRONT-2 C.B)

F

G

H

ONE-TOUCH

I

C FRONT-2 C.B

To A MAIN C.B PMK01

PKM01

15

3

Q5A1

BCE

R5A9

LD5A1

R5A8

SW5A0

SW5A0 SW5A9

PLAYBACK

R5A7

R5A6

C5A1

SW5A9

POWER

STANDBY/ON

J

SW5A7 SW5A8

CHANNEL

37

IC DESCRIPTION IC, HD3977RC06F

Pin No. Pin Name I/O Description

1

TAKE UP

SENSOR

End sensor to detect the tape’s terminal (Lead taps section).

I

If “H” is detected signal in the REW, REV modes, the mechanism stops and ejects the cassette automatically.

2

3

4

5

VSS (A/D)

END

SENSOR

TAKE UP REEL

SUPPLY REEL

Ground. End sensor to detect tape’s terminal (Lead tape section).

I

If “H” signal is detected in the FF mode, then REW mode will occur automatically.

1. When the tape is transporting. Reel pulses are input.

2. If the tape is transporting and take-up reel pulses are not input during regular time, the unit stops at STOP point automatically.

Each operating mode Sec

I

3. Distinguishes the tape type, counts the tape remaining and reduces the tape speed at the end of FF/REW modes.

1. When the tape is transporting, Reel pulses are input.

2. Distinguishes the tape type, counts the tape remaining and reduces the tape speed at

I

the end of FF/REW modes.

3. If supply reel pulses are not detected, FF/REW mode is not operating normally. And the unit stops at stop point automatically. (Refer to table of pin 17.)

PLAY, REC SP=3 EP/LP=6

FF, (REW) 2

CUE, (REV) 1

10

11

12

13

6 7 8

9

SED DET “H”

NC “L” NC “R”

AFT

PG ADJ

NC

V.ENV

KEY RTN 0

System detect for B/G or SECAM in VV/EE mode. (from SECAM I.C)

I

Not connect

–

Not connect

–

Port to detect AFT (+)’s state during tuning. When more than 4V, is detected by AFT (+) detector.

I

Detects AFT (–)’s state during tuning. When less than 0.96V, is detected by AFT (–) detector. A DC bias level set by VR501 determines the pulse width of PG M.M for H. S/W 30

I

switching interval. Not connect.

–

1. Reference input signal to perform auto tracking mode.

Video envelope (F/F) signal is input through LPF.

2. Perform auto tracking mode by sampling video envelope signal which is input

I

during a period of head switching and changing servo tracking data to obtain maximum value.

Note : When the DC level of the envelope is at its maximum, it is considered tracking

properly.

KEY RTN 0

38

Pin No. Pin Name I/O Description

No. KEY NAME A/D RANGE

1 SP/EP 0.0V ~ 0.45V 2 CH UP 0.46V ~ 0.96V 3 CH DOWN 0.97V ~ 1.47V 4 STOP/EJECT 1.48V ~ 1.97V 5 REC/ITR 1.99V ~ 2.48V

KEY RTN1

No. KEY NAME A/D RANGE

14

15

16

KEY RTN 1

VCC(A/D)

RESET

I

1 PAUSE 0.0V ~ 0.45V 2 FF 0.46V ~ 0.96V 3 REW 0.97V ~ 1.47V 4 PLAY 1.48V ~ 1.97V 5 POWER 1.99V ~ 2.48V

1. Input detector port of A/D input key. Samples 256 steps with AVcc in the center and confirms which key is pressed by the input voltage.

2. Key voltage table.

3. Excluding above item’s key sfter receiving, detecting and amplifying the remocon Data from the remocon receiver (RCSF1), decodes input signals from µ-COM (pin

82), performs its key operation. A/D Vcc.

–

1. Initially 5.3 VA is applied to Vcc pin 22 of µ-COM. This pulses is applied to clear the RAM inside the µ-COM and to reset programs to 0000H in ROM.

2. Reset timing pulse.

I

Vcc

17 18

19

20

21

NC

TUNER SECAM VL“H”

LD (–)

LD (+)

C+DET “H”

5.3VA

3.1V

1.5V RESET PULSE

RESET Period

Not connect

–

Now TUNING BAND is SECAM VHF-L. (to TUNER)

O

t

1. Output signal to IC502 for control of the loading motor’s direction of rotation.

2. Control table of loading motor’s driving direction.

Pin 19 Pin 20 Rotation of Loading Motor

O

H H Brake Mode. H L Reverse Direction. L H Forward Direction.

Now input signal is CANAL/PREMIER. (from SCART 2)

I

39

Pin No. Pin Name I/O Description

22

Vcc (SYS)

–

SYSCON Vcc.

23

24

25

26

27

28 29

A.H.S/W 30

V.H.S/W

CAPSTAN PWM

DRUM PWM

D.V. SYNC.

COLOR ROTARY

HEAD AMP S/W

Not connect

O

Pulses output for switching video head A and B.

- Produces PG M.M pulses internally by using inputted DPG, DFG pulses to pin 38,

39.

O

- Produces video head switching 30 Hz pulses by sychronizing at edge point of first PG. M.M.(PG monostable multivibratior)

- Produces audio head switching 30 Hz pulses by synchronizing at edge point of

second PG.M.M.

- Output pulses (PWM waveform) for controlling capstan motor speed and phase;

O

O O

control feedback voltage which is inputted to the capstan motor driver IC.

- Output pulses (PWM waveform) for controlling capstan motor stop and drive during slow mode.

Output pulses (PWM waveform) for controlling drum motor speed and phase; control feedback voltage which is inputted to the drum motor driver IC. Provides an output sync signal to prevent the picture from rolling upward or downward, when the video track is not being scanned in the search mode. A pulse to control phase of color at Y/C circuit. Apulse for switching the HEAD SP and EP on the DRUM.

30

31

32

33 34 35 36 37

38

39

40

COMP IN

CTL (+)

CTL (–)

Vss (SERVO)

CTL 1 CTL 2 CTL 3

CTL OUT

D.FG

D.PG

C.FG

I/O

A reference signal for switching video head (SPA, SPB, EPA, EPB) on the drum in

I

search the mode.

CTL pulse is outputted at recording, CTL pulse is inputted at playback. Functions which control Capstan motor phase at playback, check tape speed, Viss and Real time counter are performed by using CTL pulse (input/output).

Servo circuit GND in the µ-COM.

–

Port for gain (Amp) control of CTL pulse during recording and playback.

D.FG pulse input according to rotation of drum motor.

I

Produces Audio/Video Head S/W 30Hz by using these pulses. And it is used as a comparison signal for speed control of the drum motor. One D.PG pulse is generated for each rotation the drum motor and inputted to µ-COM. When producing Head S/W pulses, D.PG pulse is used as reference point, and it is

I

used as comparision signal when controlling drum motor phase. C.FG pulses are generated by the rotating capstan motor and are inputted to µ-COM.

I

When checking tape speed and controlling. The capstan motor phase, These CFG

pulses are used as comparison signal. 41 42

43

Vcc (SERVO)

Vcc (OSD)

CV IN

Vcc for servo circuit in the µ-COM.

I

Vcc for OSD circuit in the µ-COM.

I

When the OSD display function is activated both video and text are present, when in

I

the EE or PB modes.

40

Pin No. Pin Name I/O Description

44

Vref (OSD)

GND.

– 45 46 47 48 49 50 51 52 53

54

55 56

57

58 59

CV OUT

CHAR BIAS

AFC LPF

AFC OSC

Vss (OSD)

DOSC IN

DOSC OUT

4fsc OUT

4fsc IN

COMPOSITE SYNC.

CTL GAIN ADJ

SHC/MEC “H”

CST IN

SCART “H”

VIDEO Mute “H”

The video signal is output to the RF modulator and line output jack.

O

GND.

–

Horizontal sync is used to lock the OSD.

I

(Reduce Jitter) GND.

–

I

OSD DOT CLOCK oscillator. (OSD charactor oscillator) Determining the horizontal position (left or right) of OSD.

O O

Oscillator for OSD Sync. signal. Generating a blue background.

I

- Receives composite signal from Y/C circuit.

I

- Separates V-sync and H-sync in the OSD internal block.

- The sync signal determines the character position of OSD. Level control for PB CTL. (to CTL control circuit)

O

Y/C processing of Video signal at SCAM/MESECAM. (to Y/C)

O

1. Port to detect CST(cassette tape) switch input state.

I

2. With CST S/W input state, determaines whether CST tape is inserted or not. SCART 8 pin level control to GND or 12V. (to SCART 1)

O

High “H” applied, turns on the OSD or POWER.

O

60

61

62

63 64 65 66

67

68 69 70 71

POWER

CONTROL “H”

CAPSTAN REVERSE

AUDIO MUTE “H”

TU SEC “H”

16:9 “H”

TSS “L” THER “H” OPT RITC

(CTL MON)

TEST (GND)

X-TAL 2 X-TAL 1

Vss

1. A signal to switch voltages (5.3V, 12V)on/off whitch is controlled by the power key.

O

2. Outputs “H” in power On mode. Outputs “L” in power Off mode. A signal to control capstan motor’s direction of rotation.

O

“L” output = reverse direction. “H” output = forward direction.

1. Outputs “H” to mute audio signal in search mode and without sync signal.

2. Outputs “H” to eliminate pop noise generated in each mode during early switching

O

O O O O

I

–

O

I

–

point (Approx. 500ms)

(EE/VV, TUNER/LINE, POWER ON/OFF, CH. UP/DOWN etc.) Now TUNER system is SECAM-L. (to TUNER) SCART 8 pin level control to GND or 7V. (to SCART 1) Output chip enable signal for ACSS IC (IC5A1) POWER switching of VPS I.C Vdd in POWER off state.

1. Outputs “H” to mute

2. Outputs “H” to eliminate pop noise generated in speakez. GND.

1. 32.768 kHz oscillator is used as standard clock for clock display.

2. When Vcc supplied, oscillation occurs. µ-COM main ground.

speakez.

72

73

OSC 1

OSC 2

1. 10MHz oscillator is used to generate the standard clock used to operate the u-COM.

I

2. When Vcc is applied, Oscillation occurs. (But, when “L” is applied to pin 89 in

O

power failure, Oscillation stops.)

41

Pin No. Pin Name I/O Description

1. Port to ditect the mechanism’s position.

74

75

76

77

MODE SW4

MODE SW3

MODE SW2

MODE SW1

2. Deck and Mode SW Positions.

MODE MODE MODE MODE DECK POSITION

No.

SW4 SW3 SW2 SW1 NAME

1 L H L H RETURN 2 L L L H EJECT 3 L L H L ULC

I

4 L H H L LOADING START 5 H H L L LOADING END 6 H L L L TUNE 7 H L H H REV 8 H L H H PLAY

9 H L L H STOP 10 H H L H FF, REW 11HHHH PASS

LOADING

UNLOADING

78

79

80 81

82

83 84 85 86

87

88

I-LIMIT

REC “H”

CAP ACCEL “H”

DRUM ADJ

R/C

NC NC NC NC

COMPOSITE

SYNC. (INV)

STAND BY “H”

1. Input signal for stopping capstan motor.

I

2. When this port inputs “L”, the capstan motor stops.

1. When REC mode is operaing normally, outputs “H”.

O

O O

O

2. Switched to REC mode by operating audio, Y/C pre-amp.

3. Outputs “H” and record audio, video signals on the tape. Pulse output to control capstan motor in slow mode. Pulse output to control drum motor in slow mode.

1. This pin receives remocon data through RC901, which amplifies and detects the R/C signal.

I

2. After input signal is decoded in u-COM (IC501), and performs related key operation.

Not connect

–

1. Input C-Sync (composite sync) to confirm whether video signal is present or not.

I

2. Confirms by counting 1H (63.5µsec) horizontal sync for a fixed time period.

Power switching of DIGITRON in 3W mode.

42

Pin No. Pin Name I/O Description

AC POWER ON

AC POWER OFF

t

Power failure compensation cancel state

Power failure compensation state

(µ-COM memory loss state)

Vcc for (Back-up)

AVcc No (Back-up)

Power failure signal

10MHz OSC

36.768kHz OSC

Reset pulse

Power failure compensation relation

Normal operation state

5.3VA

1. When a power failure is detected, this pin goes “L” and the following sequence of events occurs.

2. Power failure detector timing sequence.

89

90 91

92, 93

94 95 96 97

98 ~ 100

POWER FAIL

IIC IIC NC

FLD ENABLE

FLD CLOCK

FLD DATA IN

FLD DATA OUT

NC

I

O

A reference CLOCK for Hi-Fi, TU/IF, MTS, SPEAKER

O

A reference DATA for Hi-Fi, TU/IF, MTS, SPEAKER

–

Not connect

O

Outputs chip enable signal for FLD Drive IC (IC5F1).

O

Outputs clock signal to operate FLD Drive IC (IC5F1).

I

Serial interface signals for FLD Drive IC control.

O O

Not connect

43

ADJUSTMENT

Test Equipment

• Oscilloscope • Test Tape

• AC Millivolt Meter TTV-P1

Adjustment Location

A MAIN C.B (TOP VIEW)

H/SW

W317

W318

TU701

IC7VI

VR501

PG ADJ.

IC503

P3D01

IC301

IC5F1

P3D02

IC501

IC502

PMC01

T101

PMK02

44

1. Servo Adjustment

1) PG Adjustment MODE MEASUREMENT POINT ADJUSTMENT POINT SPECIFICATION

PLAY VIDEO OUT

(TTV-P1) H/SW (W317, W318)

VR501 6.5 ± 0.5H

• Adjustment Procedure

1. Insert the PAL SP Test Tape (TTV-P1) and play.

Note - Adjust the distance of X, pressing the Tracking(+) or Tracking(-) when the “ATR” is blink after the

PAL SP Test Tape is inserted.

2. Connect the CH1 of the oscilloscope to the H/SW (W317, 318) and CH2 to the Video Out for the VCR.

3. Trigger the mixed Video Signal of CH2 to the CH1 H.SW (W317, W318), and then check the distance (time

difference), which is from the selected A(B) Head point of the H.SW(W317, W318) signal to the starting point of the vertical synchronized signal, to 6.5H ± 0.5H (412µs, 1H=63.5µs).

• WAVEFORM

H/SW

6.5H(412µs)

Composite

VIDEO

45

MECHANICAL EXPLODED VIEW 1/1

1

B

5

7

A

6

8

C

9

B

10

11

MAIN C.B

12

DIG5F1

B

TU701

C

FRPNT-2 C.B

FRPNT-1 C.B

2

3

4

2SCART

[For FX970Z]

1SCART

[For GX910Z]

46

MECHANICAL MAIN PARTS LIST 1/1

REF. NO PART NO. KANRI DESCRIPTION

1 S7-21R-F09-4E0 PANEL ASSY FRONT<910Z> 1 S7-21R-F09-4F0 PANEL ASSY FRONT<970Z> 2 S7-20R-F07-2E0 PANEL,FRONT<910Z> 2 S7-20R-F07-2F0 PANEL,FRONT<970Z> 3 S4-426-81A-000 SPRING DOOR

4 S5-80R-003-3F0 DOOR CST<910Z> 4 S5-80R-003-3G0 DOOR CST<970Z> 5 S5-50R-021-0A0 COVER BOTTOM<910Z> 5 ——— COVER BOTTOM<970Z> 6 S2-10R-002-3D0 FRAME MAIN

7 ——— DECK ASSY D33 2HD<910Z> 7 ——— DECK ASSY D33 4HD<970Z> 8 S1-10R-012-8K0 CASE TOP ! 9 S4-10R-CHD-01A POWER CORD 10 S7-21R-D02-3M0 PANEL ASSY<910Z>

10 S7-21R-D02-3L0 PANEL ASSY<970Z> 11 S1-11R-008-9B0 CASE ASSY 12 S9-30R-013-3A0 HOLDER DIGITRON A S3-530-51E-000 SCREW,SPECIAL 3-12 B S3-530-51A-000 SCREW,SPECIAL

C S3-531-36A-000 SCREW,SPECIAL(FBK)

NO.

COLOR NAME TABLE

Basic color symbol Color Basic color symbol Color Basic color symbol Color

B Black C Cream D Orange

G Green H Gray L Blue

LT Transparent Blue N Gold P Pink

R Red S Silver ST Titan Silver T Brown V Violet W White

WT Transparent White Y Yellow YT Transparent Yellow

LM Metallic Blue LL Light Blue GT Transparent Green LD Dark Blue DT Transparent Orange

47

MECHANISM EXPLODED VIEW 1/3

401

002

001

023

024

032

406

028

504

014

012

504

017

013

022

015

401

A01

007

006

005

A03

009

008

A02

025

026

027

A04

011

031

010

018

019

021

020

029

003

004

409

016

[For FX970Z]

[For GX910Z]

[For FX970Z]

[For GX910Z]

48

MECHANISM MAIN PARTS LIST 1/3

REF. NO PART NO. KANRI DESCRIPTION

001 S7-23R-010-4A0 DRUM ASSY SUB D33-2CH<910Z> 001 S7-23R-010-5D0 DRUM ASSY SUB D33<970Z> 002 S6-80R-B00-04A MOTOR(MECH) 003 S9-30R-010-6A0 HOLDER FRC<910Z> 003 S9-30R-010-7A0 HOLDER FRC<970Z>

004 S0-06R-001-4A0 CAP,FPC 005 ——— CAP,A CLEANER 006 ——— ROLLER CLEANER 007 ——— ARM CLEANER 008 S9-70R-004-3A0 SPRING T/UP

009 S2-60R-001-1A0 ARM T/UP 010 S7-70R-000-4A0 BAND ASSY TENSION(MECH) 011 S2-61R-000-4A0 ARM ASSY TENSION 012 S0-41R-000-3A0 BASE ASSY P2 013 S0-41R-000-4A0 BASE ASSY P3

014 S0-41R-000-7A0 BASE ASSY P4 015 S8-70R-000-1A0 OPENER LID 016 S0-41R-000-5A0 BASE ASSY A/C HEAD 017 S4-08R-000-1A0 REEL S 018 S9-70R-005-4A0 SPRING SB

019 S4-21R-000-3A0 BRAKE ASSY S 020 S9-70R-005-3A0 SPRING TB 021 S4-21R-000-4A0 BRAKE ASSY T 022 S5-238-33B-000 HEAD FE D33 023 S9-80R-001-0A0 SUPPORTER CST

NO.

REF. NO PART NO. KANRI DESCRIPTION

024 S2-61R-000-8A0 ARM ASSY IDLER<910Z> 024 S2-61R-000-9A0 ARM ASSY IDLER-J<970Z> 025 S8-10R-005-3A0 BRACKET L/D MOTOR 026 S6-81R-000-7A0 MOTOR ASSY L/D 027 S4-70R-002-5A0 GEAR WHEEL

028 S4-08R-000-2A0 REEL T 029 S2-61R-001-1A0 ARM ASSY PINCH 031 S9-70R-005-2A0 SPRING TENSION 032 S1-41R-000-2A0 CHASSIS ASSY 401 87-261-071-410 PAN HEAD SCREW 2.6-4

406 87-744-094-410 SCREW,PAN HEAD 3.0-6.0 409 87-741-095-410 SCREW,PAN HEAD 3.0-8.0 504 S3-540-01B-000 WASHER,P.S 3.1-6-0.5 A01 ——— DRUM ASSY D33-2CH<910Z> A01 ——— DRUM ASSY D33-4CH<970Z>

A02 ——— ARM ASSY A03 S2-61R-000-3A0 ARM ASSY CLEANER A04 ——— BRACKET ASSY L/D MOTOR

NO.

49

MECHANISM EXPLODED VIEW 2/3

056

057

054

053

426

077

426

410

032

071

073

074

075

076

072

078

A12

A13

067

066

065

A11

068

069

070

079

426

064

518

052

055

518

517

061

062

060

063

517

051

059

A14

058

[For FX970Z]

50

MECHANISM MAIN PARTS LIST 2/3

REF. NO PART NO. KANRI DESCRIPTION

032 S1-41R-000-2A0 CHASSIS ASSY 051 S4-00R-000-5A0 BELT CAPSTAN 052 S6-80R-A00-03A MOTOR(MECH) 053 S9-74R-001-8A0 GUIDE RACK F/L 054 S4-70R-003-7A0 GEAR RACK F/L

055 S4-70R-003-3A0 GEAR DRIVE 056 S4-70R-003-2A0 GEAR CAM 057 S4-70R-003-6B0 GEAR CONNECT 058 ——— BRAKE CAPSTAN 059 S9-70R-005-9A0 SPRING CAPSTAN

060 S5-10R-002-5A0 LEVER F/R 061 S2-65R-000-2A0 CLUTCH ASSY 062 S4-70R-004-4A0 GEAR ASSY UP/D 063 S9-70R-005-1A0 SPRING UP/D 064 S4-70R-003-4A0 GEAR SECTOR

065 ——— LEVER P3 066 ——— SPRING L/D 067 ——— GEAR P3 068 ——— GEAR P2 069 ——— SPRING L/D

NO.

REF. NO PART NO. KANRI DESCRIPTION

070 ——— LEVER P2 071 ——— BRACKET JOG<970Z> 072 ——— LEVER JOG<970Z> 073 ——— LEVER SLOW<970Z> 074 S9-70R-004-9A0 SPRING JOG<970Z>

075 ——— GEAR JOG<970Z> 076 ——— ARM JOG<970Z> 077 S3-00R-015-7A0 PLATE SLIDER 078 S5-10R-002-2A0 LEVER TENSION 079 S0-40R-001-8A0 BASE TENSION

410 SA-PF0-262-218 SCREW,PAN HEAD 2.6-6.8 426 87-261-094-410 PAN HEAD SCREW 3-6 517 SW-ZZR-000-4B0 WASHER STOPPER 518 SW-ZZR-000-4A0 WASHER STOPPER A11 S4-70R-002-8A0 GEAR ASSY P3

A12 S4-70R-002-6A0 GEAR ASSY P2 A13 S8-11R-001-2A0 BRACKET ASSY JOG<970Z> A14 ——— BRAKET ASSY CAPSTAN

NO.

51

MECHANISM EXPLODED VIEW 3/3

101

426

102

103

104

407

105

100

110

111

115

116

112

113

114

032

109

108

426

A22

A23

A21

A24

107

106

52

MECHANISM MAIN PARTS LIST 3/3

REF. NO PART NO. KANRI DESCRIPTION

032 S1-41R-000-2A0 CHASSIS ASSY 100 S3-01R-002-9A0 PLATE ASSY TOP 101 S8-10R-005-6A0 BRACKET SIDE(L) 102 ——— LEVER STOPPER(L) 103 ——— HOLDER SIDE(L)

104 S9-74R-001-9A0 GUIDE CST 105 ——— HOLDER CST 106 ——— HOLDER SIDEE(R) 107 ——— LEVER STOPPER(R) 108 ——— BRAKET SIDE(R)

109 ——— OPENER DOOR 110 ——— ARM F/L(L) 111 ——— SPRING F/L(L) 112 ——— BODY F/L 113 ——— SPRING F/L(R)

NO.

REF. NO PART NO. KANRI DESCRIPTION

114 ——— ARM F/L(R) 115 S9-70R-005-0A0 SPRING SWITCH 116 S5-10R-002-0A0 LEVER SWITCH 407 87-841-034-210 SCREW PAN HEAD 2.0-5.0 426 87-261-094-410 PAN HEAD SCREW 3-6

A21 S9-31R-001-5A0 HOLDER ASSY CST A22 S8-11R-001-4A0 BRACKET ASSY A23 S2-61R-001-0A0 ARM ASSY F/L A24 ——— LEVER ASSY SWITCH

NO.

53

54

DECK MECHANISM PARTS LOCATIONS

Bracket Side 'L' 5

Plate Assembly 2 Top

Lever Assembly 8 S/W

4 Guide CST

3 Holder Assembly CST

Opener Door

6 Bracket

Assembly Door

7 Arm Assembly F/L

• T op View

• Bottom View

Motor Capstan 23

Gear Connector 33 Gear Cam 32

Brake Assembly 30 Capstan

Belt Capstan 22 Gear Drive 31 Guide Rack F/L 28

Gear Rack F/L 29 Clutch Assembly D33 24

Lever F/R 25

26 Gear Assembly H-Up/D

39 Gear Assembly P3

40 Gear Assembly P2

36 Base Tension

35 Gear Sector

38 Lever Tension

37 Plate Slider

27 Bracket Assembly

Jog

NOTE :When reassembly perform the

procedure in the reverse order.

1) When reassembling, confirm Mechanism and Mode Switch Alignment Position (Pefer to Page 4-14)

2) When disassembling, the Parts for Starting No. Should be removed first.

1 Drum Assembly 3 Screws , Cap FPC A-1 2 Plate Assembly Top T w o Hooks A-2

2 3 Holder Assembly CST Chassis Hole A-2

4 Guide CST 2 Hooks A-2 2,3,4 5 Bracket Side (L) 1 Scre w A-2 2,3,4 6 Bracket Assembly Door 1 Screw A-2 2,3,4,5,6 7 Arm Assembly F/L Chassis Hole A-2 2,3,4,5 8 Lever Assembly S/W Chassis Hole A-2

9 Arm Assembly Cleaner Chassis Embossing A-3

10 Head F/E 2 Hooks A-3

11 Base Assembly A/C Head 1 Screw A-3

12 Brake Assembly S Chassis Hole A-4 2,3 13 Brake Assembly T Chassis Hole A-4 2,3,12, 14 Arm Assembly Tension Chassis Hole A-4 2,3,12,14 15 Reel S Chassis Shaft A-4 2,3,13 16 Reel T Chassis Shaft A-4

17 Support CST Chassis Embossing A-5

18 Base Assembly P4 Chassis Embossing A-5

19 Opener Lid Chassis Embossing A-5 19 20 Arm Assembly T/Up Chassis Embossing A-5 19 21 Arm Assembly Pinch Chassis Shaft A-5

Starting No.

Pracedure

Part

Fixing Type

Fig-

ure

22 Belt Capstan A-6

22 23 Motor Capstan 3 Screws A-6

24 Clutch Assembly D33 1 Washer A-6 22,24 25 Lever F/R 1 Hook A-6 22,24 26 Gear Assembly H-Up/D 2 W ashers A-6

27 Bracket Assembly Jog 1 Screw A-7

28 Guide Rack F/L 1Scre w A-7 28 29 Gear Rack F/L A-7 28, 29 30 Brake Assembly Capstan Chassis Shaft A-7 28, 29 31 Gear Drive 1 Washer A-8 28, 29, 30 32 Gear Cam Chassis Shaft A-8 28, 29, 30, 31

33 Gear Connector Chassis Shaft A-8

34 Bracket Assembly L/D Motor 3 Hooks A-8

35 Gear Sector 3 Washers A-9

36 BaseTension 1 Screw A-9 22, 24, 25, 27

37 Plate Slider Chassis Shaft A-9 28, 29, 31, 35 36 22, 24, 25, 27 28, 29, 31, 35

38 Lever T ension Chassis Hole A-9 36 35 39 Gear Assembly P3 2 Hooks A-10 35, 39 40 Gear Assembly P2 2 Hooks A-10 35, 39, 40 41 Base Assembly P3 Chassis Hole A-10 35, 39, 40, 41

42 Base Assembly P2 Chassis Hole A-10 1, 2 43 Arm Assembly Idler Jog 1 Hook A-10

Starting No.

Pracedure

Part

Fixing Type

Fig-

ure

Head F/E 10

Drum Assembly 1

Support CST 17

Base Assembly P2 42

Brake Spring S

Brake Assembly S 12 Arm Assembly 14

Tension Band Assembly

Tension Reel S 15

Lever Assembly S/W 8

9 Arm Assembly Cleaner

34 Bracket Assembly

L/D Motor

11 Base Assembly

21 Arm Assembly Pinch

18 Base Assembly P4 41 Base Assembly P3

20 Arm Assembly T/Up

13 Brake Assembly T

A/C Head

19 Opener Lid

43 Arm Assembly

ldler Jog

16 Reel T

Brake Spring T

55

DECK MECHANISM DISASSEMBLY

Cap FPC

Holder FPC

(only for 4HD-Hi-Fi Models)

Drum Sub Assembly

Rotor

H1

(S1)

(S2)

(S3)

(S2)

Drum Motor

Stator

or or

Optional Parts

Drum FPC

Holder FPC

(only for 2HD Models)

Holder FPC

(only for 4HD-Mono Models)

1. Drum Assembly (Fig. A-1-1)

1) Unhook the (H1) on the back side of the Chassis and separate the Cap FPC.

2) Remove three Screws (S1) and lift up the Drum Assembly.

3) Remove two Screws (S2) and Separate the Stator of Drum Motor.

4) Remove two Screws (S3) and Separate the Rotor of Drum Motor from the Drum Sub Assembly.

(1) When reassembling Cap FPC, two Holes of Drum FPC

are inserted to the two Bosses of Holder FPC correctly. (Refer to Fig. B-1)

Fig. A-1

NOTE

(Fig. A-1-1)

(Fig. B-1)

Holder FPC

Drum FPC

Cap FPC

Figure in the opposite direction

DECK MECHANISM DISASSEMBLY

56

H1

H3

(S1)

(S2)

(H5)

Gear Rack F/L Groove

Arm F/L

(A)

Lever Stopper (L)

Bracket Side (L)

Bracket

Assembly Door

Lever Stopper (R)

(B)

H2

H4

Lever Assembly S/W

Guide CST

Arm Assembly F/L

Holder Assembly CST

Plate Assembly Top

Groove

Fig. A-2

(Fig. A-2-1)

(Fig. A-2-2)

(Fig. A-2-6)

(Fig. A-2-7)

(Fig. A-2-5)

(Fig. A-2-3)

(Fig. A-2-4)

57

DECK MECHANISM DISASSEMBLY

2. Plate Assembly Top (Fig. A-2-1)

1) Unhook the (H1) and separate the Left Side.

2) Unhook the (H2) and lift up the Plate Assembly Top.

(1) When reassembling, confirm (A),(B) Part of the Plate

Assembly Top is inserted to the (L),(R) Grooves of the Bracket Side(L) and Bracket Assembly Door.

3. Holder Assembly CST (Fig.A-2-2)

1) Push the Lever Stopper(L),(R) in the direction of the arrows (A), (B), and move the Holder Assembly CST.

2) Push the Bracket Assembly Door to the right and lift up the Holder Assembly CST along the Guide Groove of the Bracket Assembly Door.

4. Guide CST (Fig.A-2-3)

1) Push two Hooks(H3),(H4) in the direction of the arrow and separate the left side.

2) Unhook (H5),(H6) as above No.1) and disassemble the Guide CST in the direction of the arrow.

5. Bracket Side(L) (Fig. A-2-4)/ Bracket Assembly Door (Fig.A-2-5)

1) Remove the Screw (S1) and disassemble the Bracket Side(L) in the front.

2) Remove the Screw (S2) and disassemble the Bracket Assembly Door in the front.

6. Arm Assembly F/L (Fig. A-2-6)

1) Push the Ar m Assembly F/L to the left and lift up it.

(1) When reassembling, confirm that the Gear(A) of the Arm

F/L and the Gear(B) of the Gear Rack F/L are assembled as below.

7. Lever Assembly S/W (Fig. A-2-7)

1) Hook the Spr ing Lever S/W on (H5).

2) Lift up the left side of the Lever S/W from the Groove(A) of the Chassis.

(1) Place the Spring Lever S/W of the above (No.1) as

original position.

NOTE

Plate Assembly Top

Bracket Side (L)

Bracket Assembly Door

Lever Stopper (L)

Lever Stopper (R)

Holder Assembly CST

(A)

(B)

Bracket Side (L)

Bracket Assembly Door

(H3)

(H4)

NOTE

Gear (B)

Gear (A)

NOTE

(H5)

Spring

Lever S/W

(H5)

Spring

Lever S/W

(H5)

DECK MECHANISM DISASSEMBLY

Arm Assembly

Cleaner

Head F/E

Base Assembly A/C Head

(S1)

(A)

(H1)

Fig. A-3

58

8. Arm Assembly Cleaner(Fig. A-3-1)

1) Break away the (A) part shown above Fig.A-3-1 from the Embossing of the Chassis in the clockwise direction and lift up the Arm Assembly Cleaner.

9. Head F/E (Fig. A-3-2)

1) Unhook the two Hooks (H1) on the back side of the Chassis and lift up the Head F/E.

10. Base Assembly A/C Head (Fig. A-3-3)

1) Remove the Screw (S1) and lift up the Base Assembly A/C Head.

(Fig. A-3-1)

(Fig. A-3-3)

(Fig. A-3-2)

DECK MECHANISM DISASSEMBLY

Reel T

Reel S

Arm Assembly Tension

Spring T Brake

Brake Assembly T

Band

Assembly

Tension

Brake Assembly S

Spring S Brake

Spring Tension

B

(A)

(C)

Fig. A-4

59

11. Brake Assembly S (Fig. A-4-1)

1) Remove the Spring S Brake.

2) Hold the (A) part shown above Fig. A-4-1 and tur n to the clockwise direction, and then lift up the Brake Assembly S .

(1) When reassembling, be careful not to change the Spring

with below No.12.(Refer to Fig. B-2).

12. Brake Assembly T (Fig. A-4-2)

1) Remove the Spring T Brake.

2) Hold the (B) part shown above Fig.A-4-2 and turn to the counterclockwise direction, and then lift up the Brake Assembly T.

(1) When reassembling, be careful not to change the Spring

with above No.11.(Refer to Fig. B-2).

13. Arm Assembly Tension (Fig. A-4-3)

1) Remove the Spring Tension.

2) Hold the (C) part shown above Fig.A-4-3 and turn to the clockwise direction, and then lift up the Arm Assembly Tension.

(1) When reassembling, be careful not to change the Spring

with above No.11,12.(Refer to Fig. B-2).

14. Reel S (Fig. A-4-4) & Reel T (Fig. A-4-5)

1) Lift up the Reel S and Reel T.

(1) When reassembling, be careful not to change the Reel S

and Reel T each other.

(2) Confirm two Slide Washers under the Reel S and Reel T.

NOTE

Spring T Brake Spring S Brake Spring Tension

NOTE

(Difference for Springs)

Color (Black)

Three Holes

Reel S

Reel T

(Fig. B-2)

NOTE

(Fig. A-4-1)

(Fig. A-4-5)

(Fig. A-4-3)

(Fig. A-4-4)

(Fig. A-4-2)

DECK MECHANISM DISASSEMBLY

Arm

Assembly

Pinch

Opener Lid

Base Assembly P4

Support CST

Arm Assembly T/up

(A)

(B)

(C)

(D)

Spring

Arm T/Up

Fig. A-5

60

15. Suppor t CST (Fig. A-5-1)

1) Break away the (A) part shown above Fig.A-5-1 from the Embossing of the Chassis in the clockwise direction, and lift up the Support CST.

16. Base Assembly P4 (Fig. A-5-2)

1) Break away the (B) part shown above Fig.A-5-2 from the Embossing of the Chassis in the counterclockwise direction and lift up the Base Assembly P4.

17. Opener Lid (Fig. A-5-3)

1) Hook the Spr ing Arm T/up on the Split digged under the Arm Assembly T/up.(Refer to Fig.A-5-4(D)).

2) Break away the (C) Part of the Opener Lid from the Embossing of the Chassis in the Clockwise direction and lift up the Opener Lid.

18. Arm Assembly T/up (Fig. A-5-4)

1) Confirm that the Spring Arm T/up is placed as above (No.17.1).

2) Lift up the Ar m Assembly T/up.

(1) When reassembling, unhook the Spring Arm T/up Shown

above (No.17.1) to the original position.

19. Arm Assembly Pinch (Fig. A-5-5)

1) Lift up the Ar m Assembly Pinch.

NOTE

Opener Lid

Spring Arm T/up

Arm Assembly T/up

(Fig. A-5-3)

(Fig. A-5-4)

(Fig. A-5-1)

(Fig. A-5-2)

(Fig. A-5-5)

DECK MECHANISM DISASSEMBLY

Belt Capstan

Motor Capstan

Clutch Assembly D33

Washer(W1)

Washer(W2)

Spring Up/D

Slide Washer

Gear Assembly H-Up/D or

Lever F/R

(S1)

Hook(H1)

(A)

(C)

(A')

(B')

(B)

Gear Assembly Up/D

(For Normal Models)(For Hi-Rewind Models)

Optional Parts

Fig. A-6

61

20. Belt Capstan (Fig. A-6-1)/ Motor Capstan (Fig. A-6-2)

1) Remove the Belt Capstan.

2) Remove three Screws(S1) on the back side of the

Chassis and lift up the Motor Capstan.

(1) When reassembling, Confirm the (A), (B) par ts of Motor

Capstan is located to the (A'), (B') of the Chassis.

21. Clutch Assembly D33 (Fig. A-6-3)

1) Remove the Washer(W1) and lift up the Clutch Assemb ly

D33.

22. Lever F/R (Fig. A-6-4)

1) Unhook the (H1) shown above Fig. A-6-4 and lift up the

Lever F/R.

(1) When reassembling, move the (C) part of the Lever F/R up

and down, then confirm if it is returned to original position.

23. Gear Assembly H-Up/D or Gear Assembly Up/D (Fig. A-6-5)

1) Remove the Washer(W2) and lift up the Gear Assembly H-up/D.

2) Remove the Spring Up/D.

3) Remove the Slide Washer.

(1) Gear Assembly H-Up/D is for Hi-Rewind Models. (2) Gear Assembly Up/D is for Normal Models except Hi-Rewind

Models.

NOTE

(Fig. A-6-1)

(Fig. A-6-2)

(Fig. A-6-3)

(Fig. A-6-5)

(Fig. A-6-4)

NOTE

DECK MECHANISM DISASSEMBLY

Bracket Assembly Jog

(S1)

Brake Assembly Capstan

Guide Rack F/L

Gear Rack F/L

(S2)

Hole (B)

Brake Assembly Capstan

Hole (A)

(H2)

(H1)

Spring Capstan

Gear Cam

Hole (A)+(B)

Fig. A-7

62

24. Bracket Assembly Jog (Fig. A-7-1)

1) Remove the Screw(S1) and lift up the Bracket Assembly Jog.

25. Guide Rack F/L (Fig. A-7-2)/

Gear Rack F/L (Fig. A-7-3)

1) Remove the Screw(S2) and lift up the Guide Rack F/L.

2) Lift up the Gear Rack F/L.

26. Brake Assembly Capstan (Fig. A-7-4)

1) Hook the Spr ing Capstan on the Hook(H1).

2) Unhook the Hook(H2) and lift up the Brake Assembly Capstan.(Refer to Fig. to the right)

(1) When reassembling, confirm that the Hole(A) of the

Brake Assembly Capstan is aligned to the Hole(B) of the Gear Cam. (Refer to above Fig.A-7-4).

NOTE

Hook(H2)

(Fig. A-7-4)

(Fig. A-7-1)

(Fig. A-7-2)

(Fig. A-7-3)

DECK MECHANISM DISASSEMBLY

H1

H2

Gear Drive

Gear Cam

Gear Connector

Bracket Assembly

L/D Motor

Washer (W1)

Gear Connector

Hole(A')+(A)

Hole(B')+(B)

Chassis

Gear Cam

Hole(B)

Hole(B')

Hole(A)

Hole(A')

Fig. A-8

63

27. Gear Drive (Fig. A-8-1)/ Gear Cam (Fig. A-8-2)/ Gear Connector (Fig. A-8-3)

1) Remove the Washer(W1) and lift up the Gear Drive.

2) Lift up the Gear Cam.

3) Lift up the Gear Connector.

(1) When reassembling, confirm that the Hole (A) of the

Gear Connector is aligned to the Hole (A') of the Chassis (Fig. A-8-3).

(2) When reassembling, confirm that the Hole (B) of the

Gear Cam is aligned to the Hole (B') of the Chassis (Fig. A-8-2).

(3) When reassembling, confirm that the (C) part of the Gear

Cam is aligned to the (D) part of the Gear Drive as shown Fig. B-3

28. Bracket Assembly L/D Motor (Fig.A-8-4)

1) Unhook the three Hooks(H1),(H2) and push down the Bracket Assembly L/D Motor.

NOTE

Gear Cam (C)

Gear Drive (D)

Hook (H1), (H2)

Chassis

(Fig. B-3)

(Fig. A-8-1)

(Fig. A-8-2)

(Fig. A-8-3)

(Fig. A-8-4)

DECK MECHANISM DISASSEMBLY

Base Tension

Gear Sector

( S1)

Washer

Plate Slider

(A)

Lever Tension

(W1)

Fig. A-9

64

29. Gear Sector (Fig. A-9-1)

1) Remove the Washer(W1) and lift up the Gear Sector.

30. Base Tension (Fig. A-9-2)/ Plate Slider (Fig. A-9-3)/ Lever T ension (Fig. A-9-4)

1) Remove the Screw(S1) and lift up the Base Tension.

2) Lift up the Plate Slider.

3) Hold the (A) Part of the Lever Tension and tur n to the

counterclockwise direction, and then lift up the Lever Tension.

(1) When reassembling, turn the Lever Tension to the clock-

wise direction in maximum.

NOTE

(Fig. A-9-1)

(Fig. A-9-2)

(Fig. A-9-4)

(Fig. A-9-3)

DECK MECHANISM DISASSEMBLY

Gear Assembly P3

Gear Assembly P2

Arm Assembly Idler Jog Arm Assembly Idler or

(For 2HD Models) (For 4HD Models)

Base Assembly P3

Base Assembly P2

Chassis

H1

H2

(A)

(B)

(H3)

Gear Assembly P3

Gear Assembly P2

(A)

(B)

Optional Parts

Fig. A-10

65

31. Gear Assembly P3 (Fig. A-10-1)/ Gear Assembly P2 (Fig.A-10-2)

1) Unhook the two Hooks(H1) and lift up the Gear Assembly P3.

2) Unhook the two Hooks(H2) and lift up the Gear Assembly P2.

32. Base Assembly P3 (Fig. A-10-3)/ Base Assembly P2 (Fig.A-10-4)

1) Move the Base Assembly P3 in the direction of the arro w of the

Chassis Hole(A) and push down the Base Assembly P3.

2) Move the Base Assembly P2 in the direction of the arro w of the

Chassis Hole(B) and push down the Base Assembly P2.

33. Arm Assembly Idler Jog or Arm Assembly

Idler (Fig. A-10-5)

1) Unhook the Hook(H3) and push down the Arm Assembly Idler

Jog.

1) Arm Assembly Idler Jog is for 4HD Models.

2) Arm Assembly Idler is for 2HD Models.

1) When reassembling, confirm that the (A) Part of the Gear Assembly P3 is aligned to the (B) Part of the Gear Assembly P2 as shown below .

NOTE

Gear Assembly P3

Gear Assembly P2

(A)

(B)

(Fig. A-10-1)

(Fig. A-10-2)

(Fig. A-10-4)

(Fig. A-10-3)

(Fig. A-10-5)

(Unloading Condition)

DECK MECHANISM ADJUSTMENT

• Tools and Fixtures for Service

1. Cassette T orque meter

1. SRK-VHT-303(Not SVC part)

4.Torque gauge adaptor

5. Post height adjusting driver Parts No:

SV-TGO-030-000 (SMALL) SV-TGO-020-000 (LARGE)

6. + Type driver (ø 5)

2. Alignment tape (See figure below)

3.Torque gauge

3. 600g.Cm ATG

SRK

VIDEO

CASSETTE TORQ

UE

M

ETER

VHT-303

S

R

K

-

V

H

T

-

S

R

K

-

V

H

T

-

T

3

0

25

0

2

00 15

0

50

0

3

0

25

0

20

0

15

0

50

0

100

ALIGNMENT TAPES FOR ADJUSTMENT

Derivation No.

Mechanism

Adjustment ltems

FM Envelope

A

PAL

SP/LP

2/4 Head

TTV-P2L

B

PAL

SP

2 Head

TTV-P2

C

NTSC

SP/LP/EP

2/4 Head

TTV-N1

(TTN-N12)

D

NTSE

SP

2 Head

TTV-N2

Slantness

Height

Azimuth

A commercially available tape

A/C

Head

TTV-P1

(TTV-P1L)

TTV-P2 TTV-P2

(TTV-P2L)

TTV-N1

(TTV-N12)

TTV-N2

TTV-P1

TTV-P2

TTV-N1 (TTV-N12) (TTV-N1E)

TTV-N2

TTV-N2E

TTV-N12

A commercially available tape

SRK-VHT-303

RG Post lnclination Tape Back Tension

The numbers in ( ) parenthesis can be used as the substiture.

X-value

66

Purpose:To determine if the Mechanism is in the correct position, when a Tape is ejected.

DECK MECHANISM ADJUSTMENT

1.Mechanism Alignment Position Check

1) Turn the Power S/W on and eject the Cassette by pressing the Eject Button.

2) Remove the Top Cover and Plate Assembly Top, visually check if the Gear Cam Hole is aligned with the Chassis Hole as below Fig. C-2.

3) IF not, rotate the Shaft of the Loading Motor to either Clockwise or Counterclockwise until the Alignment is as below Fig. C-2.

4) Remove the Screw which fix es the Deck Mechanism and Main Frame and confirm if the Gear Cam is aligned with

the Gear Drive as below Fig. C-1(A).

5) Confirm if the Mode S/W on the Main P.C.Board is aligned as below Fig. C-1(B).

6) Remount the Deck Mechanism on the Main P.C.Board and check each operation.

Mode S/W

Gear Cam

Gear Drive

(A)

(B)

Test Equipment/ Fixture

• Blank tape

Test Conditions (Mechanism

Condition)

• Eject Mode (with Cassette ejected)

Check Point

• Mechanism and Mode Switch Position

Fig. C-1

Fig. C-2

CHECK DIAGRAM

BOTT OM VIEW

TOP VIEW

Gear Cam (o) and Gear Drive (o) groove alignment

67

L/D Motor Assembly

Gear Cam

Chassis Hole

Gear Cam Hole

68

Purpose: To insure smooth Transport of the Tape during each Mode of Operation.

If the Tape Transport is abnormal,then check the Torque as indicated b y the chart below.

DECK MECHANISM ADJUSTMENT

2. Preparation for Adjustment (To set the Dec k Mechanism to the Loading state without inserting a Cassette Tape).

1) Unplug the Power Cord from the AC Outlet.

2) Disassemble the Top Cov er and Plate Assembly Top.

3) Plug the Power Cord into the AC Outlet.

4) Turn the P ower S/W on and push the Le ver Stopper (L),(R) of the Holder Assembly CST to the back for Loading the Cassette without

T ape . Cover the Holes of the End Sensors at the both sides of the Brack et Side(L) and Bracket Assembly Door to pre vent a light leak. Then The Deck Mechanism driv es to the Stop Mode. In this case, The Dec k Mechanism can accept inputs of each mode, howev er the Rewind and Revie w Operation can not be perf ormed for more than a fe w seconds because the Tak e-up Reel Table is in the Stop State and can not be detected the Reel Pulses.

3 . Checking T orque

The Values are measured by using a Torque Gauge and Torque Gauge Adaptor with the Torque Gauge affixed.

The Torque reading to measure occurs when the Tape abruptly changes direction from Fast Forward of Rewind Mode, when quick bracking is applied to both Reels.

SRK

V

ID

E

O

C

A

S

E

T

E

T

O

R

Q

U

E

M

E

T

E

R

V

H

T

-3

0

3

S

R

K

-

V

H

T

-

S

R

K

-

V

H

T

-

T

300

250

200

150

50

0

300

250

200

150

50

0

100

Test Equipment/ Fixture

• Torque Gauge(600g/cm ATG)

• Torque Gauge Adaptor

• Cassette Torque Meter SRK-VHT-303

Checking Method

• Perf orm each Deck Mechanism Mode without inserting a Cassette Tape(Refer to above No.2 Preparation for Adjustment).

• Read the Measurement of the Take-up or Supply Reels on the Cassette Torque Meter(Fig. C-3-2).

• Attach the Torque Gauge Adaptor to the Torque Gauge and then read the Value of it(Fig.C-3-1).

NOTE:

Fig. C-3-2

Fig. C-3-1

Torque Gauge

Torque Gauge Adaptor

Reel Tab le

Item

Fast Forward Torque Rewind Torque Play Take-Up Torque Review Torque

Mode

Fast Forward Rewind Play Review

Test Equipment

Cassette Torque Gauge Cassette Torque Gauge Cassette Torque Meter Cassette Torque Meter

Take-Up Reel Supply Reel Take-Up Reel Supply Reel

More than 400g/cm More than 400g/cm 75~115g/cm 130~200g/m

Measurement Reel

Measurement Values

Test Conditions (Mechanism

Condition)

• Play (FF) or Review (REW) Mode

NOTE:

• Cassette Torque Meter (SRK-VHT-303)

• Torque Gauge (600g.cm ATG)

DECK MECHANISM ADJUSTMENT

69

4.Guide Roller Height Adjustment

Adjustment Procedure

1) Confirm if the Tape runs along the Tape Guide Line of the Lower Drum.

2) If the Tape runs the Bottom of the Guide Line, turn the Guide Roller Height Adjustment Screw to Clockwise direction.

3) If it runs the Top, turn to Counterclockwise direction.

4) Adjust the Height of the Guide Roller to be guided to the Guide Line of the Lower Drum from the Starting and Ending Point of the Drum.

Purpose: To regulate the Height of the Tape so that the Bottom of the Tape runs along the

Tape Guide Line on the Lower Drum.

Test Equipment/ Fixture

• Post Height Adjusting Driver

Test Conditions (Mechanism Condition)

• Play or Review Mode

Adjustment Point

• Guide Roller Height Adjustment screws on the Supply and Take-Up Guide Rollers.

Fig. C-4-1

Upper Flange

Guide Roller Retaining Screw

Guide Roller Height Adjustment screw

ADJUSTMENT DIAGRAM

Test Equipment/Fixture

• Oscilloscope

• Alignment Tape

• Post Height Adjusting Driver

Test Equipment Connection Points

• CH-1:PB RF Envelope

• CH-2:NTSC: SW 30Hz PAL: SW 25Hz

• Head Switching Output

Point

• RF Envelope Output

Point

Test Conditions VCR(VCP) State

• Play an Alignment Tape

Adjustment Point

• Guide Roller Height Adjustment Screws

Fig. C-4-2

Fig. C-4-3

P3 POST ADJUSTMENT

P2 POST ADJUSTMENT

Turn the Roller Guide Height Adjustment Screw slightly to flatten the waveform.

Tracking control at center

RF ENVELOPE OUTPUT TEST POINT

OSCILLOSCOPE

HEAD SWITCHING OUTPUT TEST POINT

Turn(Move) the tracking control to both directions

4-1. Preliminary Adjustment

4-2. Precise Adjustment

Adjustment Procedure

1) Play an Alignment Tape after connecting the Probe of the Oscilloscope to the RF Envelope Output Test Point and Head Switching Output Test Point.

2) Tracking Control(in PB Mode) : Center Position(When this Adjustment is performed after the Drum Assembly has been replaced, set the Tracking Control so that the RF Output is Maximum).

3) Height Adjustment Screw : Flatten the RF Waveform. (Fig. C-4-2)

4) Turn(Move) the Tracking Control(in PB Mode) Clockwise and Counterclockwise.(Fig.C-4-3)

5) Check that any Drop of RF Output is uniform at the Start and End of the Waveform.

If the adjustment is excessive or insufficient the tape will jam or fold.

NOTE

Waveform Diagrams

Connection Diagram

70

DECK MECHANISM ADJUSTMENT

5. Audio/Control (A/C) Head Adjustment

Purpose: To insure that the Tape passes accurately over the Audio and Control Tracks in exact Alignment in both the Record and Playback Modes.

Test Equipment/ Fixture

• Blank Tape

• Screw Driver(+) Type 5mm

• Play the blank tape

Test Conditions (Mechanism Condition)

Adjustment Point

• Tilt Adjustment Screw(C)

• Height Adjustment Screw(B)

• Azimuth Adjustment Screw(A)

Fig. C-5-1

A/C Head Base

Fig. C-5-2

Height Adjustment

Screw(B)

Tilt Adjustment

Screw(C)

Azimuth Adjustment Screw(A)

X-Value Adjustment Hole

Fixed Screw

Fig. C-5-3

A/C Head

Tape

0.2~0.25mm

P4

5-1. Preliminary Adjustment (Height and Tilt Adjustment)

Perform the Preliminary Adjustment, when there is no Audio Output Signal with the Alignment Tape.

1) Initially adjust the Base Assembly A/C Head as shown Fig. C-5-1 by using the Height Adjustment Screw(B).

2) Play a Blank Tape and observe if the Tape passes accurately over the A/C Head without Tape Curling or Folding.

3) If Folding or Curling is occured then adjust the Tilt Adjustment Screw(C) while the Tape is running to resemble Fig. C-5-3.

4) Reconfir m the Tape Path after Playback about 4~5 seconds.

Ideal A/C head height occurs, when the tape runs between 0.2~0.25mm above the bottom edge of the A/C head core.

NOTE

Adjustment Procedure/Diagrams

A/C Head Assembly

-0.05

10.9

Purpose:To obtain compatibility with other VCR(VCP) Models.

DECK MECHANISM ADJUSTMENT

71

5-2. Confirm that the Tape passes smoothly

between the Take-up Guide and Pinch Roller(using a Mirror or the naked eye).

1) Afetr completing Step 5-1.(Preliminary Adjustment), check that the Tape passes around the Take-up Guide and Pinch Roller without Folding or Curling at the Top or Bottom. (1) If Folding or Curling is observed at the Bottom of

the Take-up Guide then slowly turn the Tilt Adjustment Screw(C) in the Clockwise directioin.

(2) If Folding or Curling is observed at the Top of it then

slowly turn the Tilt Adjustment Screw(C) in the Counterclockwise direction.

Check the RF Envelope after adjusting the A/C Head, if the RF Waveform differs from Fig. C-5-4, performs Precise Adjustment to flat the RF Waveform.

Test Equipment/ Fixture

• Oscilloscope

• Alignment Tape(SP)

• Screw Driver(+) Type 5mm

Connection Point

• Audio output jack

Test Conditions

(Mechanism Condition)

• Play an Alignment Tape 1KHz, 7KHz Sections

Adjustment Point

• Azimuth Adjustment Screw(A)

• Height Adjustment Screw(B)

1) Connect the Probe of the Oscilloscope to Audio Output Jack.

2) Alter nately adjust the Azimuth Adjustment Screw(A) and the Tilt Adjustment Screw(C) for Maximum Output of the 1Khz and 7Khz segments, while maintaining the flattest Envelope differential between the two Frequencies.

Adjustment Procedure

5-3. Precise Adjustment (Azimuth adjustment)

6. X-Value Adjustment

Fig. C-5-4

1KHZ

• Oscilloscope

• Alignment tape(SP only)

• Screw Driver(+) Type 5mm

• CH-1: PB RF Envelope

• CH-2: NTSC: SW 30Hz PAL: SW 25Hz

• Head Swithching Output

Test Point

• RF Envelope Output Test

Point

Test Conditions

(Mechanism Condition)

• Play an Alignment Tape

Adjustment PointConnection PointTest Equipment/ Fixture

Adjustment Procedure

1) Release the Automatic Tracking to run long enough for Tracking to complete it’s Cycle.

Tracking center position.

2) Loosen the Fixed Mounting Screw and move the Base Assembly A/C Head in the direction as shown in the Diagram to find the center of the peak that allows for the maximum Waveform Envelope. This method should allow the 31um Head to be centrally located over the 58um Tape Track.

3) Tighten the Base Assembly A/C Head mounting Screw.

7KHZ

A:Maximum

B:Maximum

Left

Right

Groove at the Base A/C

Height Adjustment Screw(B)

Tilt Adjustment Screw(C)

Azimuth Adjustment Screw(A)

X-Value Adjustment Hole

Fixed Screw

RF ENVELOPE OUTPUT TEST POINT

OSCILLOSCOPE

HEAD SWITCHING OUTPUT TEST POINT

Connection Diagram

Adjustment Diagram

NOTE:

CH-1

CH-2

Purpose:To correct for shift in the Roller Guide and X value after replacing the Drum.

8-2.Check for tape curling or jamming

Test Equipment/ Fixture

• T-160 Tape

• T-120 Tape

Specification

• Be sure there is no tape jamming or curling at the begining, middle or end of the tape.

VCR(VCP) State

•

Run the CUE, REV play mode at the beginning and the end of the tape.

Test Conditions (Mecanism Condition)

1) Confirm that the tape runs smoothly around the roller guides, drum and A/C head assemblies while abruptly changing operating modes from Play to CUE or REV. This is to be checked at the begining, middle and end sections of the cassette.

2) Confir m that the tape passes over the A/C head assembly as indicated by proper audio reproduction and proper tape counter performance.

Checking Procedure

DECK MECHANISM ADJUSTMENT

72

7. Adjustment after Replacing Drum Assembly (Video Heads)

Test Equipment/ Fixture

• Oscilloscope

• Alignment tapes

• Blank Tape

• Post Height Adjusting Driver

• Screw Driver(+) Type 5mm

Connection Point

• CH-1:PB RF Envelope

• CH-2:NTSC:SW 30Hz PAL:SW 25Hz

• Head Swithching Output

Test P oint

• RF Envelope Output Test Point

Test Conditions

(Mechanism Condition)

• Play the blank tape

• Play an alignment tape

Adjustment Points

• Guide Roller Precise Adjustment

• Switching Point

• Tracking Preset

• X-Value

Checking/Adjustment Procedure

Play a blank tape and check for tape curling or creasing around the roller guide.If there is a problem then follo w the procedure 4. "Guide Roller Height" and 5. "Audio Control(A/C) Head Adjustment".

RF ENVELOPE OUTPUT TEST POINT

OSCILLOSCOPE

HEAD SWITCHING OUTPUT TEST POINT

Connection Diagram

Waveform

V1/V MAX ≤0.7 V2/V MAX ≤0.8 RF ENVELOPE OUTPUT

Fig. C-7

8. Check the Tape Travel after Reassembling Deck Assembly.

8-1.Check Audio and RF Locking Time during playback and after CUE or REV (FF/REW)

Test Equipment/ Fixture

• Oscilloscope

• Alignment tapes(with 6H 3kHz Color Bar Signal)

• Stop Watch

Specification

• RF Locking Time:Less than 5 sec.

• Audio Locking Time:Less than 10sec

Test Equipment

Connection Points

• CH-1: PB RF Envelope

• CH-2: Audio Output

• RF Envelope Output Point

• Audio Ouptut Jack

Test Conditions

(Mecanism Condition)

• Play an alignment tape (with 6H 3kHz Color Bar Signal)

Checking Procedure

Play an alignment tape then change the operating mode to CUE or REV and confirm if the unit meets the above listed specifications.

1) CUE is fast forward mode (FF)

2) REV is the rewind mode (REW)

3) Referenced to the Play mode

NOTES:

V1

V

V2

CH1 CH2

Connection Points

MAINTENANCE/INSPECTION PROCEDURE

73

(4) F/E Head

(3) P1 Post

(6) Drum Assembly

(Video Head)

(5) Base

Assembly P2

(2) Tension Post

(1) Supply Reel

(7) Base Assembly P3

The following faults can be remedied by cleaning and oiling. Check the needed lubrication and the conditions of cleanliness in the unit. Check with the customer to find out how often the unit is used, and then determine that the unit is ready for inspection and maintenance. Check the following parts.

1 Check before starting repairs

Phenomenon Inspection

Replace-

ment

Color beats Dirt on full-erase head

o

Poor S/N, no color

Dirt on video head

Vertical or Horizontal jitter

Dirt on Audio/control head

Dirt on pinch roller

If locations marked with o do not operate normally after cleaning, check for wear and replace. See the EXPLODED VIEWS at the end of this manual as well as the above illustrations See the Greasing (P age 4-22) f or the sections to be lubricated and greased.

NOTE

o

Dirt on video head

Dirt on tape transport system

Low volume,

Sound distorted

Tape does not run.

Tape is slack

o

In Review and Unloading (off mode), the Tape is rolled up loosely.

Clutch Ass’y S27 Torque reduced

Cleaning Drum and transport system

Fig.C-9-3

(8) A/C Head

(9) P4 Post

(11) Pinch Roller

(12) Take-up Guide Post

(10) Capstan Shaft

(13) T ake-up Reel

* No. (1)~(13) Indicates the Tape Path to be traveled from Supply Reel to Take-up Reel.

Fig. C-9-1 T op VIEW

Fig. C-9-2 BOTTOM VIEW

F/E Head

Video Head

A/C Head

Pinch Roller Belt Capston

Clutch

Assembly D33

Fig. C-9-3 T ape T ransport System

74

MAINTENANCE/INSPECTION PROCEDURE

The recording density of a VCR(VCP) is much higher than that of an audio tape recorder.VCR(VCP) components must be very precise, at tolerances of 1/1000mm, to ensure compatiblity with other VCRs. If any of these components are worn or dirty, the symptoms will be the same as if the part is defective.To ensure a good picture, periodic inspection and maintenance, including replacement of worn out parts and lubrication, is necessary.

Schedules for maintenance and inspection are not fixed because they vary greatly according to the way in which the customer uses the VCR(VCP), and the environment in which the VCR(VCP) is used. But, in general home use, a good picture will be maintained if inspection and maintenance is made every 1,000 hours. The table below shows the relation between time used and inspection period.

Table 1

(1) Grease : Kanto G-311G (Blue) or equivalent (2) Isopropyl Alcohol or equivalent (3) Cleaning Patches (4) Grease : Kanto G-381(Yellow) : Used only for Reel S and

Reel T

(1) Cleaning video head

First use a cleaning tape. If the dir t on the head is too stubborn to remove by tape, use the cleaning patch. Coat the cleaning patch with Isopropyl Alcohol. Touch the cleaning patch to the head tip and gently turn the head(rotating cylinder) right and left. (Do not move the cleaning patch vertically. Make sure that only the buckskin on the cleaning patch comes into contact with the head. Otherwise, the head may be damaged.) Thoroughly dry the head. Then run the test tape. If lsopropyl Alcohol remains on the video head, the tape may be damaged when it comes into contact with the head surface.

(2) Clean the tape transpor t system and drive system, etc,

by wiping with a cleaning patch wetted with Isporopyl Alcohol.

1 It is the tape transport system which comes into contact

with the running tape.The drive system consists of those parts which moves the tape.

2 Make sure that during cleaning you do not touch the tape

transport system with the tip of a screw driver and no that force is that would cause deforming or damage applied to the system.

2.Required Maintenance

3.Scheduled Maintenance

5) Maintenance Procedure 5-1) Cleaning

NOTES:

About 1

year

One hour

Two hours

Three hours

When

inspection is

necessary

Average hours used per day

About 18

months

About 3

years

4.Supplies Required for Inspection and Maintence

Fig. C-9-4

Drum (Rotating Cylinder)

Head Tip

Coat With Isopropyl Alcohol

Touch this section of cleaning patch to the head tip and gently turn the Drum (Rotating Cylinder)

Cleaning Patch

MAINTENANCE/INSPECTION PROCEDURE

75

(1) Greasing guidelines

Apply grease, with a cleaning patch. Do not use excess grease. It may come into contact with the tape transport or drive system.Wipe any excess and clean with clean ing patch wetted in Isopropyl Alcohol.

(2) Periodic greasing

Grease specified locations every 5,000 hours.

5-2) Greasing

NOTE:Greasing Points

3

2

1

4

5

6

9

7

8

1)Loading Path Inside & Top side

2)Base Tension Boss inside Hole

3)Arm Assembly F/L "U" Groove

4)Arm Take-up Rubbing Section

5)L/D Motor Worm Wheel Part

6)Shaft

7)Arm Assembly F/L of Buming Inside Hole

8)Reel S, T Shaft (G381:Yellow)

9)Brake T Groove

Gear Assembly Up/D

Gear Drive

Gear Sector

Gear Cam

Press

Cam Part

Gear Part

Stopper Part

Bracket Side (L)

Bracket Assembly Door

1

4

5

76

3

2

1) Loading Path Inside & Top side

2) Shaft

3) Gear Rack F/L Moving Section

4) Shaft

5) Lever Tension Groove

6) Clutch Assembly D33 Shaft

7) Brake "S" Rubbing Section

Chassis (Top)

Chassis (Bottom)

Guide Rack F/L Gear Rack F/L

Side

Bottom

inside

Bottom

Cam & Gear Part

Plate Slider (Top)

Plate Slider (Bottom)

Cam Part

Gear Part

Guide Rail

MECHANISM TROUBLESHOO TING GUIDE

76

Auto REW doesn't work.

Is the output of END sensor

of supply side "H"?

“H”: more than 3.5V

“L”:less than 0.7V~1V

Is the voltage across IR LED

between 0.8~1.5V?

Replace LED.

Is the Vcc.voltage of End

sensor 5V?

Check the syscon power.

Replace End sensor.

Check syscon circuit.

NO

YES

NO

1.Deck Mechanism

A.

NO

No F/R modes.

Is the present mode,

F/R Mode?

Is the mode SW assembled

correctly (refer to Pages 4-14.)

Is the normal voltage supplied to

the Capstan Motor Vcc1, Vcc2.?

Does terminal voltage(Vctl) of

Capstan Motor supply side

more than 4V?

Check Servo, Power Circuits.

Replace the Capstan Motor.

Does the Capstan Motor rotate?

Do the T/Up, Supply Reel rotate?

Check syscon circuit.

YES

B.

77

MECHANISM TROUBLESHOO TING GUIDE

AUTO STOP.

(PLAY/CUE/REV)

Are there T/up and supply reel pulses.

In Play/Cue/Rev is the pinch

roller in contact with the capstan

shaft.

Replace Reel Sensor.

Is the output of DFG, DPG OK?

Check aligment positions (page 4-

14) Check spring Pinch.

Replace Drum Motor.

Check Servo, Syscon.

Check the Syscon, µ-COM.

No cassette loading.

Insert the cassette.

Check Cassette Carry Assembly.

Is there variation for F/L S/W

Output?

(In Tape with REC Tab

“L”→“H”→“L”)

(In Tape without REC Tab

“L”→“H”→“L”→“H”)

Does the F/L S/W work normally?

Does the lever S/W work

normally.

Check Syscon Circuit.

Replace F/L S/W.

YES

NO

YES

C.

D.

78

MECHANISM TROUBLESHOO TING GUIDE

In PB mode Tape Presence

not sensed.

Is the Pinch Roller attached

to the Capstan Motor Shaft?

Check Alignment positions

(page 4-14)

Does the T/Up

Reel turn?

Replace the Belt.

Is the Belt ok?

Does the Drum

Motor turn?

Are there DPG,

DFG Pulses?

Are the T/Up Supply Reel Sensors

ok?

Check Syscon,

Circuit.

Check Syscon,

Circuit.

Check Servo, Syscon.

Does the Capstan Motor turn?

Is the terminal voltage

of the Drum Motor

more than 2.3V?

Replace the

Drum Motor.

Is the Vcc voltage of the Drum

Motor normal?

Check the clutch and the Idler

Assembly.

YES

NO

Is the terminal voltage of Capstan

Motor supplied more than 4V?

Replace the

Capstan Motor.

Is the Voltage supplied to the Capstan

Motor Vcc1,Vcc2 each?

YES

Check Servo,

Power.

NO

E.

79

MECHANISM TROUBLESHOO TING GUIDE

Cassette cannot be inserted.

Does the Lever Switch work?

Is the Lever Switch Spring

damaged or omitted?

Does the F/L switch work

normally?

Replace or add the

Lever Switch Spring.

Is the Vcc of Main P.C.Board 5V?

YES

Check syscon circuit.

YES

Check power circuit.

NO

Is the voltage between cassette

switch and GND on Main

P.C.Board 5V??

YES

Is there a short circuit between cassette

switch and GND on main P.C.Board?

Remove the short circuit part or

Replace the main P.C.Board.

NO

Check Mode switch location and

syscon circuit.

Replace F/L Switch.

YES

NO

YES

NO

Replace F/L Switch.

NO

Cassette will not eject.

Does the L/D motor rotate in reverse?

Check L/D Motor or Drive IC.

Replace lever Switch.

Does the Lever Switch work?

YES

NO

Does the Arm Assembly F/L work normally?

YES

NO

Does the Opener Door work?

YES

Replace Arm Assembly F/L.

Replace the Opener Door.

2. Front Loading Mechanism

A.

B.

80

MECHANISM TROUBLESHOO TING GUIDE

Cassette will not load.

Does the CST insert?

Does the opener Lid work?

Is the opener Door assembled correctly?

Replace the Opener Lid.

Replace the Arm Assembly F/L.

Check the power of L/D Motor.

Is the Holder Assembly Cassette

assembled correctly?

Replace the Rear Rack F/L.

Does the Gear Rack F/L work?

Does the Opener Door work?

Does the Arm Assembly F/L work?

Does the L/D Motor work?

Does the Holder Assembly Cassette

move the Arm Assembly F/L?

Replace the Front Loading

Mechanism Assembly.

YES

NO

YES

NO

YES

NO

YES

NO

C.

2–11, IKENOHATA 1–CHOME, TAITO-KU, TOKYO 110-8710, JAPAN TEL:03 (3827) 3111

920074

Printed in Singapore

Aiwa HV-GX910, HV-FX970 Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual