SAT/DVD (AA,AH mode) (AG,AJ mode) HR-S6970AA,HR-S6970AG,HR-S6970AH,HR-S6970AJ [V17S1] For disassembling and assembling of MECHANISM ASSEMBLY, refer to the SERVICE MANUAL No.86700(MECHANISM ASSEMBLY). TABLE OF CONTENTS PRECAUTION............... . . 1-3 SPECIFIC SERVICE INSTRUCTIONS .
Page 2
SPECIFICATION HR-S6970AA HR-S6970AH HR-S6970AG HR-S6970AJ GENERAL Power requirement Rating AC 110 V - 240 V, 50 Hz/60 Hz Operating AC 90 V - 260 V, 50 Hz/60 Hz Power consumption Power on 18 W 20 W 18 W 20 W Power off 3.5 W...
SECTION 1 PRECAUTION SAFTY PRECAUTIONS Prior to shipment from the factory, JVC products are strictly in- Consequently, when servicing these products, replace the spected to conform with the recognized product safety and elec- cathode ray tubes and other parts with only the specified trical codes of the countries in which they are to be parts.
Page 4
1.1.2 Safety Check after Servicing Examine the area surrounding the repaired location for damage (4) Leakage current test or deterioration. Observe that screws, parts and wires have been Confirm specified or lower leakage current between earth returned to original positions, Afterwards, perform the following ground/power cord plug prongs and externally exposed ac- tests and confirm the specified values in order to verify compli- cessible parts (RF terminals, antenna terminals, video and...
SECTION 2 SPECIFIC SERVICE INSTRUCTIONS Different table of features The following table indicates main different points between models HR-S6970AA,HR-S6970AG,HR-S6970AH and HR-S6970AJ. HR-S6970AA HR-S6970AG HR-S6970AH HR-S6970AJ POWER PLUG AS/NZS HK3PIN SASO CONVERSION PLUG NOT USED <-- <-- PROVIDED BROADCASTING STANDARD B/G,D/K,I <--...
Page 6
Jig RCU mode Mechanism service mode This unit uses the following two modes for receiving remote con- This model has a unique function to enter the mechanism into ev- trol codes. ery operation mode without loading of any cassette tape. This (1) User RCU mode:Ordinary mode for use by the user.
Page 7
2.5.3 Suggested servicing schedule for main components The following table indicates the suggested period for such ser- vice measures as cleaning, lubrication and replacement. In prac- tice, the indicated periods will vary widely according to environmental and usage conditions. However, the indicated components should be inspected when a set is brought for ser- vice and the maintenance work performed if necessary.
SECTION 3 DISASSEMBLY 3.1 Removing the major parts 3.1.1 How to read the procedure table This table shows the steps for disassembly of the externally fur- nished parts and board assemblies. Reverse these steps when Door re-assembling them. opener Step/ Fig.
Page 9
HOLD PART OF ROLLER ARM ASS'Y WHILE ATTACHING INERTIA PLATE. INERTIA PLATE SHOULD BE ATTACHED (S1b) (S1a) SO AS TO SER SMALL DIAMETER OF CENTRAL ROUND HOLE ABOVE. [1]Top cover POSITION ROLLER'S INSTALLATION HOLE IN THE "A" PART. INSERT ROLLER UNTIL THE "b" PART OF ROLLER'S HOOK IOCK UP TO THE "B"...
SECTION 4 ADJUSTMENT Before adjustment 4.1.4 Color (colour) bar signal,Color (colour) bar pattern 4.1.1 Precaution Colour bar signal [PAL] Colour bar pattern [PAL] • The adjustments of this unit include the mechanism com- White(100%) (75%) patibility and electrical adjustments. During the perfor- White(75%) mance of this work, be sure to observe the precautions for each type of adjustment.
Page 11
4.1.6 Manual tracking mode (Auto tracking ON/OFF) set- 4.2 Mechanism compatibility adjustment ting Notes: (1) In order to set to the manual tracking mode during tape • Although compatibility adjustment is very important, it playback, press the “SP/EP(LP)”button on the remote con- is not necessary to perform this as part of the normal trol unit.
Page 12
4.2.2 FM waveform linearity Proper waveform variation Signal (A1) • Alignment tape(SP, stairstep, PAL) [MHPE] (A2) • Alignment tape(LP,stairstep,PAL) [MHPE-L] Mode • PB Equipment • Oscilloscope Measuring point (D) • TP106 (PB. FM) External trigger (E) • TP111 (D.FF) Improper waveform variation Down Adjustment part (F) •...
Page 13
4.2.4 A/C head phase (X-value) 4.3 Electrical adjustment Signal (A1) • Alignment tape(SP, stairstep, PAL) [MHPE] Note: (A2) • Alignment tape(LP,stairstep,PAL) [MHPE-L] The following adjustment procedures are not only necessary Mode • PB after replacement of consumable mechanical parts or board Equipment •...
Page 14
(4) Transmit the code (F) from the Jig RCU to adjust so that the noise bar becomes the specified value (G) on the TV monitor in the slow mode. (5) Set the VCR to the Stop mode. Y level (6) Confirm that the noise bar is (G) on the TV monitor in the slow mode.
SECTION 5 TROUBLESHOOTING Manually removing the cassette tape (3) Unload the pole base assembly by manually turning the gear of the loading motor until the pole base assembly is If you cannot remove the cassette tape which is loaded because hidden behind the cassette lid.
Page 16
5.2 Emergency display function 0 : 00 : 00 Normal display (Counter or clock) This unit saves details of the last two emergencies as the EMG history and allows the status of the VCR and the mechanism of EMG content display (E:Latest:Previous) See 5.2.4 E: * * : * * each emergency to be shown both on the display and as OSD in-...
Page 17
EE : Loading motor control status FF : Sensor information (See sensor information details.) GG : Capstan motor speed HH : Key code (JVC code) : Supply reel winding diameter data, higher 8 bits. JJ : Supply reel winding diameter data, lower 8 bits.
Page 18
5.2.4 EMG content description Note: EMG contents "E08/E09" are for the model with Dynamic Drum (DD). CONTENT CAUSE If the mechanism mode does not change to the next mode within 4 sec- E01: Loading EMG 1. The mechanism is locked in the middle of the mode transition during a tape loading operation. onds after the loading motor starts rotating in the loading direction, while 2.
Page 19
5.2.5 EMG detail information < 1 > *2 : Mechanism operation mode The status (electrical operation mode) of the VCR and the status [Table of MN*] (mechanism operation mode/sensor information) of the mecha- Display Mechanism operation mode nism in the latest EMG can be confirmed based on the figure in Command standby (No command to be executed) EMG detail information <...
Page 20
3- : Mechanism sensor information *5 : Cassette tape type < 1 > [Common table of MN* and HD*] Display Cassette tape type <1> Cassette type not identified Mechanism sensor information Large reel/small reel (T-0 to T-15/T-130 to T-210) not classified Display Mechansim Small reel, thick tape (T-120) identified/thin tape (T-140) identified...
Page 22
Victor Company of Japan, Limited AV & MULTIMEDIA COMPANY DIGITAL VIDEO STORAGE CATEGORY 12, 3-chome, Moriya-cho, kanagawa-ku, Yokohama, kanagawa-prefecture, 221-8528, Japan (No.YD047) Printed in Japan...
Page 25
CIRCUIT BOARD NOTES CHARTS AND DIAGRAMS 1. Foil and Component sides 4. Voltage measurement NOTES OF SCHEMATIC DIAGRAM 1) Foil side (B side) : Parts on the foil side seen from foil face (pattern face) 1) Regulator (DC/DC CONV) circuits Safety precautions are indicated.
Page 37
2D DIGITAL CIRCUIT BOARD COMPONENT PARTS LOCATION GUIDE <MAIN> LPB10241-001B REF.NO. LOCATION REF.NO. LOCATION REF.NO. LOCATION REF.NO. LOCATION REF.NO. LOCATION REF.NO. LOCATION REF.NO. LOCATION REF.NO. LOCATION CAPACITOR C2007 A D 14O C5107 D5208 Q7003 B C 10A R2234 B C 18K R4016 B C 13F K5101...
Page 39
VIDEO BLOCK DIAGRAM (2) MAIN (VIDEO/N. AUDIO, TERMINAL) 2Fsc TP106 SYSCON PB. FM 2Fsc V.PULSE C.SYNC I2C_DATA_AV FILTER USED I2C_CLK_AV SB_GAIN(PWM) CONT X-TAL CR DET 2fsc B-Y INVERT TP111 VCO/OSC CLOCK DRIVER DOWN D. FF LCVCO CONV SYSCON CCD- CHROMA KILLER CONT MODE...
Page 40
AUDIO BLOCK DIAGRAM MAIN ( VIDEO/N. AUDIO , FMA, TERMINAL, TUNER ) J7105 IC2201 FRONT_IN EXT2_IN(R) FRONT U.DRUM AUDIO IN ( R ) AUDIO HEAD EXT2_IN(L) FMA_CH1 FRONT AUDIO IN ( L ) FMA_CH2 RFC_OUT TU6001 ANT IN IC6701 AUDIO IN 2 fsc_IN ANA_IN1+ DACM_L...
Page 41
SYSTEM CONTROL BLOCK DIAGRAM MAIN ( SYSCON ) IC3001 ( SYSTEM CONTROL MICRO PROCESSOR ) I2C_DATA S-SUB OSC2(OUT) I2C_CLK X3002 MAIN SYSTEM CLOCK (10MHz) OSC1(IN) I2C_DATA I2C_CLK A.MUTE ( H ) X3001 C3025 TIMER CLOCK H.REC_ST ( H ) H.REC_ST(H) TIMER CLOCK ( 32kHz ) CN3001...
Page 42
CPU PIN FUNCTION REMOTE CONTROLLER SCHEMATIC DIAGRAM <SYSCON IC3001> PIN NO. LABEL IN/OUT FUNCTION PIN NO. LABEL IN/OUT FUNCTION SVss CTLREF CTL REFERENCE VOLTAGE DIG5 LED DRIVE (LP20878-014#/015#) CTL[+] IN/OUT CTL(+) SIGNAL I2C_CLK2 SERIAL DATA TRANSFER CLOCK FOR MEMORY IC CTL[-] IN/OUT CTL(-) SIGNAL I2C_DATA2...
Page 43
VOLTAGE CHARTS <VIDEO/N.AUDIO> <SYSCON> <S-SUB> <FMA> <SWITCHING REGULATOR> <TUNER/DEMOD> <FRONT> <TERMINAL> <ADV.JOG> MODE MODE MODE MODE MODE MODE MODE MODE MODE MODE MODE MODE PLAY PLAY PLAY PLAY PLAY PLAY PLAY PLAY PLAY PLAY PLAY PLAY PIN NO. PIN NO. PIN NO.
Page 46
Victor Company of Japan, Limited AV & MULTIMEDIA COMPANY DIGITAL VIDEO STORAGE CATEGORY 12, 3-chome, Moriya-cho, kanagawa-ku, Yokohama, kanagawa-prefecture, 221-8528, Japan (No.YD047) Printed in Japan...
Page 47
* BEWARE OF BOGUS PARTS Parts that do not meet specifications may cause trouble in regard to safety and performance. We recommend that genuine JVC parts be used. * (x_) in a description column shows the number of the used part.
Exploded view of general assembly and parts list Block No. M1MM VHS MECHANISM ASSY<M2> 2D DIGITAL BOARD ASSY<05> MAIN BOARD ASSY<03> For the model with CONV.PLUG POWER CORD Attach POWER CORD to CONVERSION PLUG and after should be fix by accessory screw of CONVERSION PLUG.
Page 49
MODEL MARK MODEL MARK HR-S6970AA HR-S6970AH HR-S6970AG HR-S6970AJ General assembly Block No. [M][1][M][M] Symbol No. Part No. Part Name Description Local 1 LP10542-024A FRONT PANEL ASSY 1 LP10542-020B FRONT PANEL ASSY 1 LP10542-023B FRONT PANEL ASSY ...
VHS mechanism assembly and parts list Block No. M2MM Not used A/C HEAD BOARD ASSY <12> LOADING MOTOR BOARD ASSY <55> PMD0053A-C Classification Part No. Symbol in drawing NOTE:The section marked in AA and BB Grease KYODO-SH-JB indicate lubrication and greasing areas. COSMO-HV56 3-4(No.YD047)
Page 51
MODEL MARK MODEL MARK HR-S6970AA HR-S6970AH HR-S6970AG HR-S6970AJ VHS mechanism Block No. [M][2][M][M] Symbol No. Part No. Part Name Description Local LP40097-002E GUIDE POLE CAP NAH0004-001 FULL ERASE HEAD LP30958-001B LOADING GEAR BASE QYTPST2620ZA TAP SCREW M2.6 x 20mm(x2)
Page 52
MODEL MARK MODEL MARK HR-S6970AA HR-S6970AH HR-S6970AG HR-S6970AJ Symbol No. Part No. Part Name Description Local LP31100-002A DRIVE LEVER LP30978-001B DRIVE ARM(L) LP30979-001S DRIVE ARM(R) LP40847-001B TORSION SPRING LP30980-002A CONNECT PLATE LP10403-001C SIDE HOLDER(L) LP10404-001E SIDE HOLDER(R) LP30983-002A LOCK LEVER(L)
MODEL MARK MODEL MARK HR-S6970AA HR-S6970AH HR-S6970AG HR-S6970AJ Electrical parts list Main board Symbol No. Part No. Part Name Description Local Block No. [0][3] Q2055 or RT1N44HC-X DIGI TRANSISTOR Symbol No. Part No. Part Name Description Local Q2055...
Page 54
MODEL MARK MODEL MARK HR-S6970AA HR-S6970AH HR-S6970AG HR-S6970AJ Symbol No. Part No. Part Name Description Local Symbol No. Part No. Part Name Description Local Q7006 or 2SA1530A/QR/-X TRANSISTOR D5301 or RD15ES/B3/-T2 Z DIODE Q7007 2SB709A/QR/-X TRANSISTOR D5302 MTZJ11C-T2...
Page 55
MODEL MARK MODEL MARK HR-S6970AA HR-S6970AH HR-S6970AG HR-S6970AJ Symbol No. Part No. Part Name Description Local Symbol No. Part No. Part Name Description Local C209 QERF0JM-476Z E CAPACITOR 47uF 6.3V M C2259 QEKJ1HM-334Z E CAPACITOR 0.33uF 50V M...
Page 56
MODEL MARK MODEL MARK HR-S6970AA HR-S6970AH HR-S6970AG HR-S6970AJ Symbol No. Part No. Part Name Description Local Symbol No. Part No. Part Name Description Local C7011 QEKJ0JM-476Z E CAPACITOR 47uF 6.3V M R2203 NRSA63J-473X MG RESISTOR 47kΩ 1/16W J...
Page 57
MODEL MARK MODEL MARK HR-S6970AA HR-S6970AH HR-S6970AG HR-S6970AJ Symbol No. Part No. Part Name Description Local Symbol No. Part No. Part Name Description Local R3218 QRE141J-472Y C RESISTOR 4.7kΩ 1/4W J R7025 NRSA63J-472X MG RESISTOR 4.7kΩ 1/16W J...
Page 58
MODEL MARK MODEL MARK HR-S6970AA HR-S6970AH HR-S6970AG HR-S6970AJ Symbol No. Part No. Part Name Description Local Symbol No. Part No. Part Name Description Local J7105 QNN0381-002 PIN JACK FRONT IN C1208 NDC21HJ-221X C CAPACITOR 220pF 50V J J7106...
Page 59
MODEL MARK MODEL MARK HR-S6970AA HR-S6970AH HR-S6970AG HR-S6970AJ A/C head board Block No. [1][2] Symbol No. Part No. Part Name Description Local LPA10158-01A1 A/C HEAD BOARD ASSY ADV. jog board Block No. [3][9] Symbol No. Part No. Part Name...
Packing materials and accessories parts list The instruction manual to be provided with this product will differ according to the destination. Block No. M3MM ADHESIVE TAPE FINAL ASSY <M1> ACCESSORIES ASSY DOCUMENTS ASSY CUSHION(R) REMOCON FRONT SIDE CUSHION(L) PACKING ASSY FRAME UNIT ASSY SPEC OF BARCODE 3-14(No.YD047)
Page 61
MODEL MARK MODEL MARK HR-S6970AA HR-S6970AH HR-S6970AG HR-S6970AJ Packing and accessories Block No. [M][3][M][M] Symbol No. Part No. Part Name Description Local LP31421-006A PACKING CASE LP31423-001B CUSHION ASSY LP41038-002A POLY BAG LP41078-001A POLY BAG QAM0505-001 RF CABLE QAM0516-002 S CABLE...