HV-FX7700 HV-BA75 HV-GX935 HV-FX7700, BA75 Z Z Z HV-GX935 SERVICE MANUAL STEREO VIDEO CASSETTE RECORDER <7700/75> VIDEO CASSETTE RECORDER<935> BASIC VIDEO MECHANISM : D33K-4HF/PAL(6721R-0250A)<7700/75> : D33K-4HD/NP-VCR(6721R-0205A)<935> S/M Code No. 09-007-347-2R3 DA TA RE VI SIO N This Service Manual is the "Revision Publishing" and replaces "Simple Manual" (S/M Code No. 09-007-347-2T3).
TABLE OF CONTENTS 10. Base Assembly A/C Head ........................................ 70 11. Brake Assembly S .................................................... 71 12. Brake Assembly T .................................................... 71 13. Arm Assembly Tension ............................................. 71 14. Reel S & Reel T ....................................................... 71 15. Support CST ............................................................ 72 16. Base Assembly P4 ...............
SPECIFICATIONS Video recording system Video head Tuner system TV system Video signal system Usable cssettes Recording/playback time Video recording system Video head Tuner system TV system Video signal system Usable cssettes Recording/playback time Rotary 2 head helical scanning system Double azimuth 4 heads Frequency synthesized tuner B/G PAL color signal, 625 lines, 50 fields VHS video cassettes PAL/MESECAM SP: 5 hours max. with E-300 tape. LP: 10 hours max.
DISASSEMBLY INSTRUCTIONS 1. Top Case Removal 1) Remove 4 screws holding the top case. 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 . 2. Panel Front Removal (see Fig. 1) 1) Release 7 tabs, and then remove the panel front. P3D02 PMD01 A FF CABLE PANEL FRONT FF CABLE A A TAB Fig. 1 Fig. 3 3. Key1 C.B. and Key2 C.B. Removal (see Fig.
SERVICE POSITION 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. MAIN C.B D33 MECHA SPARSER 60mm MAIN C.B D33 MECHANISM REAR PANEL SPARSER Location Install spacers at locations (A) and (B).
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.
ELECTRICAL MAIN PARTS LIST REF. NO PART NO. KANRI NO. DESCRIPTION REF.
REF. NO PART NO. KANRI NO. DESCRIPTION REF. NO PMK01 PMK02 PML01 PW101 R/C5F1 C828 C832 C835 C902 C912 87-015-684-080 87-015-684-080 87-010-400-080 87-016-455-080 87-016-455-080 CAP,E CAP,E CAP,E CAP,E CAP,E 47-16V<75,77> 47-16V 0.47-50V<75,77> 470UF-6.3V 470UF-6.3V<75,77> C956 C960 C961 C962 C963 87-015-695-080 87-015-695-080 87-015-695-080 87-015-695-080 87-010-552-040 CAP,E CAP,E CAP,E CAP,E CAP,E 1.0-50V 1.0-50V 1.0-50V<75,77> 1.
REF. NO PART NO. C766 C769 C770 L751 L752 KANRI DESCRIPTION NO. 87-010-403-040 CAP,E 3.3-50V<75,77> 87-015-681-080 CAP,E 10-16V<75,77> 87-015-684-080 CAP,E 47-16V<75,77> 87-005-196-080 COIL,10UH<75,77> 87-005-196-080 COIL,10UH<75,77> L753 L754 L755 X751 87-005-196-080 87-003-129-080 87-003-129-080 S5-290-219-000 COIL,10UH<75,77> INDUCTOR,6800<75,77> INDUCTOR,6800<75,77> X’TAL 18.
WIRE HARNESS DIAGRAM P7M01 PM701 1 1 A.MUTE "H" 2 TU.A.L 2 3 TU.A.R 3 4 BBE A.OUT.R 4 5 NICAM C.B <7700> NC 5 6 NC 6 7 12VT 7 8 BBE A.LOUT 8 9 NC 9 P7M02 1 GND PM702 1 2 DATA 2 3 CLK 3 4 GND 4 5 SIF 5 6 5V 6 7 NC 7 8 TU.MONO.AUD 8 9 GND 9 PMD01 PDM01 1 D.CTL 1 2 M.GND 2 3 DFG 3 4 12V 4 5 PG 5 6 GND 6 7 5.1V 7 PMC01 <7700,75> PKM02 KEY 2 C.B 1 2 3 4 5 PMK02 1 5.2VA OTPB LED "H" 2 3 KEY RTN 1 4 GND POWER KEY 5 MAIN C.B PKM02 KEY 1 C.
3 4 2 11 BK WH (BR) (BL) PW101 AC INPUT ! F101 ! ! + NOTES : ! R101 ! C113 (C101,L102, C102) LINE FILTER BLOCK R141,142,143 D141 1 BD101 (D102,R104, C105,C106) 3 4 1 2 IC102 4 6 ! HOT CIRCUIT Symbol denotes DC chassis ground. Symbol denotes AC ground.
BLOCK DIAGRAM-2 (AUDIO SIGNAL SECTION) JK901 MOD.A.OUT 21 BUF.V.IN 19 TU.A.L 17 20 To POWER/ TUNER SECTION 18 16 TU.V.IN 15 12 VIDEO OUT 1 11 10 VIDEO OUT 2 9 8 AUDIO OUT 1 7 6 AUDIO OUT 2 5 4 3 To AUDIO/ VIDEO SECTION 2 MONO A.
BLOCK DIAGRAM-3 (AUDIO SIGNAL-Hi-Fi AUDIO SECTION) BUF.V.IN TU.V.IN IIC CLK To IIC DATA SYSTEM CONTROL/ A.ENV SERVO/OSD LP REC MUTE "H" SECTION A.H/SW To POWER/ TUNER SECTION AUDIO IC801 TDA9605H Hi-Fi AUDIO PROCESS IC901 MM1443XJ INPUT SELECT SW OUT(R) SORTIE G OUT(L) SORTIE D JK901(1/2) 21 29 V.OUT3 E1.V 1 30 V.OUT2 E2.V 3 18 17 HiFi PB B 31 V.OUT1 EXT.V 5 16 15 TU.V 28 13 TU.A.L 11 TU.A.
BLOCK DIAGRAM-4 (VIDEO SECTION) IC301 LA71598M AUDIO/VIDEO PROCESSOR Q304 74 57 FROM CYL.HEADS 54 51 61 C. COMB 72 71 LPF 46 Y DELAY 45 Q303 C LPF 85 LP ’B’ PB 52 MAIN CONV ACC 82 LP ’A’ PB 59 43 41 SP ’B’ PB 88 SP ’A’ PB 91 NL DE EMP YNR FM DEM PB FM AGC V.
BLOCK DIAGRAM-5 (NORMAL AUDIO SECTION) IC301 LA71598M AUDIO/VIDEO PROCESS <935> To SCART SECTION FL301,Q311 AUDIO IN 2 78 AUDIO IN 1 76 To Hi-Fi AUDIO/ SCART SECTION <7700,75> LINE AMP ALC AUTO BIAS REC AMP MUTE 99 CONTROL Q307 BIAS OSC 80 96 98 7 6 AUDIO REC/PB HEAD To SCART SECTION <935> :REC AUDIO SIGNAL IC301 LA71598M AUDIO/VIDEO PROCESS 1 AUDIO REC/PB HEAD 100 4 EQ AMP Q308, Q309, Q310 6 LINE AMP Vref MUTE 5 99 REC "H" SERIAL DECODER AUDIO BIAS 24 23 DATA CLK To SY
18 144 To Hi-Fi AUDIO/ SCART SECTION 27 To SYSTEM CONTROL/ SERVO/OSD SECTION To POWER SECTION To Hi-Fi AUDIO/ SCART SECTION :REC VIDEO SIGNAL :PB VIDEO SIGNAL FM1/AM FM2 NICAM A NICAM B IDENT SCARTL SCARTR SCART1 R SCART1 L 18,432MHz Audio PLL :REC AUDIO SIGNAL :PB AUDIO SIGNAL Demodulator A/D A/D D/A D/A SCART Switching Facilities D/A LOUDSPEAKER L X751 DSP D/A LOUDSPEAKER R <7700,BA75> IC751 MSP3417D-QG NICAM/A2 BLOCK To POWER SECTION 19 94 59 60 <935> 141 5.
BLOCK DIAGRAM-7 (SYSTEM CONTROL/SERVO SECTION) MAIN (SYSTEM CONTORL/SERVO/OSD SECTION)C.
BLOCK DIAGRAM-8 (SYSTEM CONTROL/SERVO SECTION) MAIN (SYSTEM CONTORL/SERVO/OSD SECTION)C.B <935> 7MT229GK 949 72,73 To LOADING MOTOR To SCART SECTION UPD16311GC DISPLAY DRIVER 83,107 104 103 To POWER/ TUNER SECTION To LOWER DRUM PDM01 84,108 9 IC501 HD6432197XA04F SYSCON/SERVO/OSD PROCESS 50 85 To CAPSTAN MOTOR PCM01 29 949 28 38 To AUDIO/ VIDEO SECTION A.LEVEL(R) A.LEVEL(L) A.
SCHEMATIC DIAGRAM-1 (POWER/TUNER/NICAM SECTION) MAIN(POWER/TUNER SECTION)C.
SCHEMATIC DIAGRAM-2 (POWER/TUNER SECTION) MAIN(POWER/TUNER SECTION)C.
VOLTAGE CHART-2 (AUDIO/VIDEO SECTION) IC301 PIN PB REC PIN PB 1 2.44 REC PIN 2.42 21 2.41 PB REC PIN 2.52 41 2.93 2.92 PB 61 3.43 3.43 81 0 0 2 2.44 2.42 22 0 0 42 3.16 3.14 62 3.31 3.32 82 0.03 0.04 3 2.46 2.44 23 4.48 4.52 43 3.02 2.05 63 5 5 83 0 0 4 2.45 2.35 24 4.19 4.23 44 64 5 5 84 0.03 0.03 5 0.09 0.88 25 1.69 1.69 45 2.34 2.33 65 2.03 2.03 85 0.03 0.03 6 2.46 2.34 26 0.05 0.06 46 1.46 1.44 66 2.66 2.
WAVEFORMS-1 (AUDIO/VIDEO SECTION) 1 2 IC301 Pin 38, 1Vp-p Video in IC301 Pin 20 500mVp-p PB mode 5 3 IC301 Pin 6 2.2Vp-p REC mode 7 IC301 Pin 29 2.1Vp-p PB mode 10 9 13 IC301 Pin 67 600mVp-p PB mode 11 14 IC301 Pin 66 600mVp-p PB mode 8 IC301 Pin 41 400mVp-p PB mode IC301 Pin 24 5Vp-p PB/REC modes IC301 Pin 23 5Vp-p PB/REC modes IC301Pin 7 1.4Vp-p REC mode IC301 Pin 28 4.2Vp-p PB/REC modes 32, 31 6 4 12 IC301 Pin 71, 340mVp-p REC mode 15 IC301 Pin 11 3.
SCHEMATIC DIAGRAM-3 (AUDIO/VIDEO SECTION) R321 1.2K:<7700,75> 1k:<935> MAIN(AUDIO/VIDEO SECTION)C.B R3A1 47K:<7700,75> JUMPER:<935> To FULL ERASE HEAD (5/10) (6/10) (7/10) R3B1 5.1K:<7700,75> 3.3K:<935> To SYSTEM CONTROL/ SERVO/OSD SECTION AUDIO/VIDEO PROCESSOR (2/10) To AUDIO/CTR HEADS (4/10) 936 (3/10) 11 11 8 13 12 12 12 <7700,75> <7700,75> To Hi-Fi AUDIO/ SCART SECTION 16 7 To CYL.
SCHEMATIC DIAGRAM-4 (Hi-Fi AUDIO/SCART SECTION) MAIN(Hi-Fi AUDIO/SCART SECTION)C.B <7700,75> To POWER/ TUNER SECTION AUDIO IIC IIC GDZJ5.6B To SYSTEM CONTROL/ SERVO/OSD SECTION Hi-Fi AUDIO PROCESSOR GDZJ5.
VOLTAGE CHART-3 (Hi-Fi AUDIO/SCART SECTION) SCHEMATIC DIAGRAM-5 (SCART SECTION) IC801 PB MAIN(SCART SECTION)C.B <935> 3.6 4.4 4.2 0.9 5.1 0.0 0.0 0.7 0.6 0.7 11.9 3.9 3.9 3.9 0.8 3.9 3.9 0.0 0.8 3.9 3.9 3.9 REC 1.9 4.4 4.1 0.9 5.0 0.0 4.2 4.3 4.2 4.3 12.0 3.9 3.9 3.9 0.8 3.9 3.9 0.0 0.8 3.9 3.9 3.9 40 35 30 25 6.0 6.0 0.0 6.0 20 6.0 4.5 3.8 6.0 6.0 0.0 6.0 6.1 4.6 3.8 IC801(TDA9605H) 3.8 3.9 3.9 3.9 5 3.8 REC 3.8 3.9 3.9 3.
SCHEMATIC DIAGRAM-6 (SYSTEM CONTROL/SERVO SECTION) MAIN(SYSTEM CONTROL/SERVO/OSD SECTION)C.B <7700,75> (3/3) 9MT168GK (9/9) DISPLAY To KEY 1 C.B PKM01 To KEY 2 C.B PKM02 LOADING MOTOR DRIVE -10PC EEPROM (4/5) (1/5) To LOADING MOTOR GDZJ6.8C (8/9) (2/5) (2/9) (1/5) (2/5) (6/9) J502 (7/9) (3/5) To AUDIO/VIDEO SECTION 64 65 82 77 141 (5/5) RESET R/FIND MUTE"L" R.FINDER 6 5 4 3 2 1 (9/9) PMJ01 FLD DATA MS FLD DATA SW MDO RES 5.
VOLTAGE CHART-4 (SYSTEM CONTROL/SERVO SECTION) IC501 PIN PB PB REC PIN PB PB REC PIN PB 1 0 REC PIN 0 21 2.45 2.47 41 0 0 61 5.15 5.15 81 3.37 3.37 101 0 1.44 2 2.54 2.42 22 2.42 2.42 42 0 0 62 5.0 5.0 82 5.26 5.26 102 5.25 5.25 3 2.54 2.44 23 0 0 43 4 2.54 2.35 24 2.30 0 44 5 2.54 0.88 25 0.8 (MONO) 0 45 6 2.55 2.34 26 5.28 5.27 46 0 0 66 7 2.65 2.34 27 4.67 4.71 47 0 5.23 67 0.85 0.85 87 8 2.53 0 28 5.28 5.
WAVEFORMS-2 (SYSTEM CONTROL/SERVO SECTION) 1 2 V.
SCHEMATIC DIAGRAM-7 (SYSTEM CONTROL/SERVO SECTION) MAIN(SYSTEM CONTROL/SERVO/OSD SECTION)C.B <935> (3/3) 7MT229GK (9/9) DISPLAY To KEY 2 C.B PKM02 To KEY 1 C.B PKM01 LOADING MOTOR DRIVE -10PC (4/5) (1/4) To LOADING MOTOR GDZJ6.8C (2/9) (8/9) (2/4) (1/4) (2/4) (6/9) EEPROM (7/9) (3/5) To AUDIO/VIDEO SECTION 64 65 82 77 141 (5/5) RESET R/FIND MUTE"L" R.FINDER 6 5 4 3 2 1 (9/9) PMJ01 FLD DATA MS FLD DATA SW MDO RES 5.
FL DISPLAY-1 FL DISPLAY-2 • GRID ASSIGNMENT • GRID ASSIGNMENT • ANODE CONNECTION • ANODE CONNECTION 41 42
WIRING-1 (MAIN C.B) 1 2 3 4 5 6 7 9 8 11 10 12 13 JK801 To CAPSTAN MOTOR PCM01 AC INPUT A MAIN C.B To LOWER DRUM PDM01 To LOADING MOTOR PMC01 PMD01 PML01 AUDIO To AUDIO/CTL HEAD To CYL.HEADS P3D02 JK901(1/2) EURO AV1 AUDIO/VIDEO P3D01 JK901(2/2) EURO AV2 DECODER B C E 14 ENTREE ANTENNE AERIAL SORTIE G OUT L SORTIE D OUT R SORTIE ANTENNE RF.
WIRING-2 (MAIN C.B) 1 2 3 4 5 To CAPSTAN MOTOR PCM01 AC INPUT A MAIN C.B 6 To LOWER DRUM PDM01 To LOADING MOTOR PMC01 9 8 11 10 12 13 14 ENTREE ANTENNE AERIAL To AUDIO/CTL HEAD PMD01 PML01 7 To CYL.HEADS P3D02 JK901 EURO AV1 AUDIO/VIDEO P3D01 SORTIE ANTENNE RF.
WIRING-3 (KEY1 C.B) SCHEMATIC DIAGRAM-8 (KEY1 SECTION) 1 2 3 4 5 6 KEY 1 C.B <7700,75> A KEY 1 C.B SW907 REW/ SW908 PLAY SW909 /F.FWD SW909 SW907 /F.FWD REW/ B SW911 EJECT SW908 PLAY C SW905 REC/OTR SW906 PAUSE/STILL SW910 STOP SW905 REC/OTR SW911 EJECT SW906 PAUSE/STILL SW910 STOP D To MAIN C.B SYSTEM CONTROL/ SERVO/OSD SECTION PMK01 To MAIN C.B PMK01 E SCHEMATIC DIAGRAM-9 (KEY2 SECTION) WIRING-4 (KEY2 C.
WIRING-5 (KEY1 C.B) SCHEMATIC DIAGRAM-10 (KEY1 SECTION) 1 KEY 1 C.B <935> 2 3 4 B SW907 /REW /F.FWD SW908 PLAY SW910 STOP/EJECT C SW906 PAUSE/STILL SW910 STOP/EJECT SW908 PLAY SW907 SW909 /REW /F.FWD SW906 PAUSE/STILL SW905 REC/OTR SW909 SW905 REC/OTR 6 A KEY 1 C.B To MAIN C.B SYSTEM CONTROL/ SERVO/OSD SECTION PMK01 5 SW912 CHANNEL SW911 CHANNEL D SW911 SW912 CHANNEL CHANNEL To MAIN C.
WIRING-7 (NICAM C.B) 1 2 3 4 5 A NICAM C.B B C E C B D E C B E To MAIN C.B PM701 To MAIN C.
ADJUSTMENT Test Equipment • Oscilloscope • AC Millivolt Meter • Test Tape TTV-P1 Adjustment Location MAIN C.
1. Servo Adjustment 1) PG Adjustment MODE MEASUREMENT POINT ADJUSTMENT POINT SPECIFICATION PLAY (TTV-P1) VIDEO OUT H/SW (W502, W503) 'PLAY' KEY (SET) + 'O' KEY (REMOCON) 6.5H ± 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 (W502, W503) and CH2 to the Video Out for the VCR. 3.
IC DESCRIPTION IC, HD6432197X Pin No.
Pin No. Pin Name I/O Description 43 R/C IN I 44 S Canal I/O 45 N.C – Not connected 46 VCR 'H' O TV/VCR control output 47 REC 'H' O Recording current control output 48 OSD 'H' O OSD color control in YC SECAM/MESECAM mode 49 T/UP REEL I Take-up reel input 50 CAP. REC 'H' O Capstan forward/reverse control output 51 TOP SENSOR I Top sensor input 52 SEARCH 'H' O Capstan Vcc control output 53 PLUS2 DATA O VCR Plus+ II control code output 54 R.
Pin No. Pin Name I/O Description 84 CAP ACCEL I/O Capstan control output during slow 85 I-LIMIT I/O Output to control capstan current 86 S. MONITOR2 O Servo monitor 2 87 S. MONITOR1 O Servo monitor 1 88 CST SW I CST SW/REC Tab input 89 RX I AV link data input 90 TX O AV link data output 91 BBE 'L' O BBE: AIWA RGB PATH: AKAI 92 SUP. REEL I Supply reel input 93 TU. SEC VL 'H' O Tuner SECAM VHF-L band switching control 94 TU.
IC, µPD16311GC-AB6 Pin No. Pin Name I/O 1~4 SHTL1 ~SHTL4 I Description 4-bit general-purpose input pins Serial data output. 5 DATA OUT O Lower bits are first output synchronized with the trailing edge of shift clock. (The output is Nch open drain.) 6 DATA IN I Serial data input. Lower bits are first input synchronized with the leading edge of shift clock.
58 283 (FX7700/BA75 Models) A43 457 P.C.B A00 457 457 457 457 457 284 280 A43 260 P.C.B 452 330 283 (GX935 Model) 250 462 284 280 275 DIG501 TU701 P.C.
MECHANICAL MAIN PARTS LIST 1/1 REF. NO ! PART NO. 250 260 275 275 280 KANRI DESCRIPTION NO.
101 426 110 103 60 116 115 117 104 105 A21 100 112 113 106 114 107 A23 108 032 109 426 A22 MECHANISM EXPLODED VIEW 1/3
MECHANISM MAIN PARTS LIST 1/3 REF. NO PART NO. KANRI NO.
031 024 011 017 012 504 022 401 505 003 001 401 002 018 023 (FX7700, BA75 Models) 003 019 (GX935 Model) 401 014 004 016 A03 406 409 406 007 406 013 006 032 028 015 504 029 025 020 A04 027 026 021 009 MECHANISM EXPLODED VIEW 2/3 62
MECHANISM MAIN PARTS LIST 2/3 REF. NO 001 001 001 001 002 PART NO. S7-23R-010-4A0 S7-23R-010-6D0 S8-50R-HG2-2Z0 ——— S6-80R-B00-04B KANRI NO.
053 054 426 060 061 64 062 519 517 032 063 055 518 051 056 052 057 058 059 410 518 064 077 066 067 065 070 A11 078 426 069 068 A12 079 MECHANISM EXPLODED VIEW 3/3
MECHANISM MAIN PARTS LIST 3/3 REF. NO PART NO. 032 051 052 053 054 KANRI DESCRIPTION NO.
DECK MECHANISM PARTS LOCATIONS Top View Pracedure Starting No.
DECK MECHANISM DISASSEMBLY (S2) Stator (S2) (S3) Drum Motor (S3) Rotor Drum Sub Assembly (Fig. A-1-1) Drum FPC (S1) (S1) Optional Parts Holder FPC or (only for 2HD Models) (S1) or Holder FPC Holder FPC (only for 4HD-Mono Models) H1 (only for 4HD-Hi-Fi Models) Cap FPC (Fig. A-1-1) Fig. A-1 1. Drum Assembly (Fig. A-1-1) (Fig. B-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.
DECK MECHANISM DISASSEMBLY H1 H2 Plate Assembly Top (A) (B) (Fig. A-2-1) Holder Assembly CST Lever Stopper(R) (Fig. A-2-2) Arm Assembly F/L (Fig. A-2-6) Arm F/L Lever Assembly S/W (Fig. A-2-7) (H5) (S4) Bracket Side (L) (S4) (Fig. A-2-4) Groove Gear Rack F/L Groove Bracket Assembly Door (For Jog Shuttle Models) H3 Guide CST (Fig. A-2-5) (Fig. A-2-3) Fig.
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. NOTE (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. (H4) (H3) Bracket Side (L) Plate Assembly Top Bracket Assembly Door 5. Bracket Side(L) (Fig. A-2-4)/ Bracket Assembly Door (Fig.
DECK MECHANISM DISASSEMBLY Arm Assembly Cleaner (A) (S5) (Fig. A-3-1) Base Assembly A/C Head ( H1) (Fig. A-3-3) (Fig. A-3-2) Head F/E (For Jog Shuttle Models) Fig. A-3 8. Arm Assembly Cleaner(Fig. A-3-1) NOTE 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. (1) Place the Spring Lever S/W of the above (No.1) as original position. 9. Head F/E (Fig.
DECK MECHANISM DISASSEMBLY Spring S Brake Brake Assembly S (Fig. A-4-1) (A) Arm Assembly Tension Spring Tension Reel T (C) (Fig. A-4-5) Band Assembly Tension Reel S (Fig. A-4-3) Spring T Brake B Brake Assembly T (Fig. A-4-2) (Fig. A-4-4) (For Jog Shuttle Models) Fig. A-4 11. Brake Assembly S (Fig. A-4-1) 13. Arm Assembly Tension (Fig. A-4-3) 1) Remove the Spring S Brake. 2) Hold the (A) part shown above Fig. A-4-1 and turn to the clockwise direction, and then lift up the Brake Assembly S.
DECK MECHANISM DISASSEMBLY (D) Opener Lid (Fig. A-5-3) (C) Arm Assembly T/up (Fig. A-5-4) Arm Assembly Pinch Base Assembly P4 (Fig. A-5-5) Support CST (B) (Fig. A-5-1) (A) (Fig. A-5-2) Fig. A-5 15. Support CST (Fig. A-5-1) NOTE 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. (1) When reassembling, confirm the opener lid is placed on the Hook(H1) of the Arm Assembly T/UP as below figure. 16.
DECK MECHANISM DISASSEMBLY Belt Capstan (Fig. A-6-1) (B) Motor Capstan (A) Washer(W1) Clutch Assembly D33-K (Fig. A-6-3) (Fig. A-6-2) Washer(W2 ) Optional Parts Gear H-Up/D-K Lever F/R (For Hi-Rewind Models) (Fig. A-6-4) Hook(H1) or Gear Up/D-K (For Normal Models) Spring Up/D (C) Brake Assembly Capstan (For 4HD Models) (Fig. A-6-5) (B ') ( A') (For Jog Shuttle Models) (For Jog Shuttle Models) (S6) Fig. A-6 20. Belt Capstan (Fig. A-6-1)/ Motor Capstan (Fig.
DECK MECHANISM DISASSEMBLY Brake Assembly Capstan Hole (A)+(B) Barke Assembly Capstan Gear Cam (H2) (For 4HD Models) Spring Capstan (Fig. A-7-4) Hole (A) Guide Rack F/L (H1) (S4) (S4) Barke Assembly Jog (For Jog Shuttle Models) (Fig. A-7-2) Gear Rack F/L (Fig. A-7-1) Gear Cam Hole (B) (Fig. A-7-3) Fig. A-7 (For Jog Shuttle Models) 24. Bracket Assembly Jog (Fig. A-7-1) (Jog shuttle model option) Hook(H2) 1) Remove the Screw(S4) and lift up the Bracket Assembly Jog. Hook(H2) 25.
DECK MECHANISM DISASSEMBLY Washer (W1) Gear Drive (Fig. A-8-1) Gear Cam Hole (B) (Fig. A-8-2) Brake Assembly Capstan (For 4HD Models) Gear Connector Hole (A) Hole (A')+(A) (Fig. A-8-3) Gear Connector Hole (B') Hole (A') Chassis H1 Bracket Assembly L/D Motor Hole (B')+(B) H2 (Fig. A-8-4) Gear Cam Fig. A-8 (Fig. B-3) 27. Gear Drive (Fig. A-8-1)/ Gear Cam (Fig. A-8-2)/ Gear Connector (Fig. A-8-3) Gear Cam (C) 1) Remove the Washer(W1) and lift up the Gear Drive. 2) Lift up the Gear Cam.
DECK MECHANISM DISASSEMBLY (W1) Washer Gear Sector (S4) (Fig. A-9-1) Base Tension Plate Slider (Fig. A-9-2) (Fig. A-9-3) Lever Tension (Fig. A-9-4) (A) (For Jog Shuttle Models) Fig. A-9 29. Gear Sector (Fig. A-9-1) NOTE 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 Tension (Fig. A-9-4) (1) When reassembling, turn the Lever Tension to the clockwise direction in maximum.
DECK MECHANISM DISASSEMBLY (Fig. A-10-1) Gear Assembly P3 H1 Gear Assembly P3 H2 Gear Assembly P2 (Fig. A-10-2) (A) (B) (A) Gear Assembly P2 (B) Chassis Optional Parts Base Assembly P2 Arm Assembly Idler or Arm Assembly Idler Jog (For Normal Models) (For Jog Shuttle Models) (Fig. A-10-4) (Fig. A-10-5) (H3) (Fig. A-10-3) Base Assembly P3 Fig. A-10 31. Gear Assembly P3 (Fig. A-10-1)/ Gear Assembly P2 (Fig. A-10-2) NOTE 1) Unhook the two Hooks(H1) and lift up the Gear Assembly P3.
DECK MECHANISM ADJUSTMENT • Tools and Fixtures for Service SR K 1. Cassette Torque meter 1. SRK-VHT-303(Not SVC part) -V HT -S 2. Alignment tape (See figure below) 3. Torque gauge 3. 600g.Cm ATG 5. Post height adjusting driver Parts No: SV-TGO-030-000 (SMALL) SV-TGO-020-000 (LARGE) 6. + Type driver (ø 5) 300 250 200 150 SR K 0 50 VID CAS EO S TOR ETTE Q MET UE VHT ER -303 -T K- V HT0 SR 50 100 150 200 300 250 4.
DECK MECHANISM ADJUSTMENT 1.Mechanism Alignment Position Check Purpose:To determine if the Mechanism is in the correct position, when a Tape is ejected. Test Equipment/ Fixture Test Conditions (Mechanism Condition) Blank tape Eject Mode (with Cassette ejected) 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.
DECK MECHANISM ADJUSTMENT Cassette without Tape. Cover the Holes of the End Sensors at the both sides of the Bracket Side(L) and Bracket Assembly Door to prevent a light leak. Then The Deck Mechanism drives to the Stop Mode. In this case, The Deck Mechanism can accept inputs of each mode, however the Rewind and Review Operation can not be performed for more than a few seconds because the Take-up Reel Table is in the Stop State and can not be detected the Reel Pulses. 2.
DECK MECHANISM ADJUSTMENT 4.Guide Roller Height Adjustment 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. 4-1. Preliminary Adjustment Test Equipment/ Fixture • Post Height Adjusting Driver Test Conditions (Mechanism Condition) • Play or Review Mode Adjustment Procedure Adjustment Point • Guide Roller Height Adjustment screws on the Supply and Take-Up Guide Rollers.
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. 5-1. Preliminary Adjustment (Height and Tilt Adjustment) Perform the Preliminary Adjustment, when there is no Audio Output Signal with the Alignment Tape.
DECK MECHANISM ADJUSTMENT slowly turn the Tilt Adjustment Screw(C) in the Counterclockwise direction. 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.
DECK MECHANISM ADJUSTMENT 7. Adjustment after Replacing Drum Assembly (Video Heads) Purpose: To correct for shift in the Roller Guide and X value after replacing the Drum.
MAINTENANCE/INSPECTION PROCEDURE 1 Check before starting repairs 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.
MAINTENANCE/INSPECTION PROCEDURE 4. Supplies Required for Inspection and Maintence 2. Required Maintenance 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.
MAINTENANCE/INSPECTION PROCEDURE (2) Periodic greasing Grease specified locations every 5,000 hours. 5-2) Greasing (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.
MECHANISM TROUBLESHOOTING GUIDE 1.Deck Mechanism A. Auto REW doesn't work. YES Is the output of END sensor of supply side "H"? “H”: more than 3.5V “L”: less than 0.7V~1V YES NO Is the Vcc. voltage of End sensor 5V? NO Check the syscon power. YES Replace End sensor. Is the voltage across IR LED between 0.8~1.5V? YES Replace LED. NO Check syscon circuit. B. No F/R modes. YES Is the present mode, F/R Mode? NO Is the mode SW assembled correctly (Refer to Page 79.
MECHANISM TROUBLESHOOTING GUIDE C. AUTO STOP. (PLAY/CUE/REV) Check aligment positions (page 79) Check spring Pinch. In Play/Cue/Rev is the pinch roller in contact with the capstan shaft. NO Is the output of DFG, DPG OK? YES Are there T/up and supply reel pulses. Replace Drum Motor. NO YES NO Check Servo, Syscon. YES Check the Syscon, µ-COM. Replace Reel Sensor. D. No cassette loading. Insert the cassette. YES Does the lever S/W work normally. NO Check Cassette Carry Assembly.
MECHANISM TROUBLESHOOTING GUIDE E. In PB mode Tape Presence not sensed. Is the Pinch Roller attached to the Capstan Motor Shaft? NO Check Alignment positions (page 79) YES Does the T/Up Reel turn? NO NO Is the Belt ok? YES Replace the Belt. YES Check the clutch and the Idler Assembly.
MECHANISM TROUBLESHOOTING GUIDE 2. Front Loading Mechanism A. Cassette cannot be inserted. Does the Lever Switch work? NO Is the Lever Switch Spring damaged or omitted? YES Replace or add the Lever Switch Spring. NO YES Does the F/L switch work normally? NO Replace F/L Switch. YES Is the Vcc of Main P.C.Board 5V? YES Is the voltage between cassette switch and GND on Main P.C.Board 5V? YES Check syscon circuit. NO Check power circuit. NO Check Mode switch location and syscon circuit.
MECHANISM TROUBLESHOOTING GUIDE C. Cassette will not load. Does the CST insert? YES Does the opener Lid work? YES NO Replace the Opener Lid. Does the Gear Rack F/L work? YES NO Replace the Rear Rack F/L. Does the Opener Door work? YES NO Does the Arm Assembly F/L work? YES Is the opener Door assembled correctly? NO Does the L/D Motor work? YES Replace the Arm Assembly F/L. NO Does the Holder Assembly Cassette move the Arm Assembly F/L? YES Check the power of L/D Motor.
2–11, IKENOHATA 1–CHOME, TAITO-KU, TOKYO 110-8710, JAPAN TEL:03 (3827) 3111 H251701 Printed in Singapore
