Instruction/ maintenance manual of the product TCM-21DV Sony
Go to page of 16
SERVICE MANUAL CASSETTE-CORDER US Model TCM-20D V/21D V/22D V/23D V Canadian Model TCM-20D V/22D V AEP Model TCM-20D V/21D V E Model TCM-20D V/23D V Chinese Model TCM-20D V SPECIFICA TIONS TCM-20DV/21.
– 2 – T ABLE OF CONTENTS 1. SER VICING NOTES ............................................... 2 2. GENERAL ................................................................... 3 3. DISASSEMBL Y .......................................................
– 3 – SECTION 2 GENERAL This section is e xtracted from instruction manual. • Location of Controls REC TIME MIC VOL B PLA Y M FF/CUE SPEED CONTROL EAR VOR z REC x STOP m REW/ REVIEW P AUSE DC IN 3 V .
– 4 – CABINET (REAR), CASSETTE LID Note: Follo w the disassembly procedure in the numerical order giv en. SECTION 3 DISASSEMBL Y • This set can be disassembled in the order sho wn below .
– 5 – MAIN BO ARD, MECHANISM DECK (MT -20D V -118) BEL T 6 claw 2 screw (1.7) 3 screw (M1.4) 4 MAIN board 7 mechanism deck (MT-20DV-118) 5 three screws (IB lock) 1 Remove the two solders electret condenser microphone (MIC101). 1 Remove the two solders magnetic head (HRP901).
– 6 – INST ALLA TION MAIN BO ARD On installation MAIN board, adjust to the S101 and the S102. screw (1.7) screw (M1.4) MAIN board S101 (REC/PB) S102 (POWER) lever (REC).
– 7 – Mode T orque Meter Meter Reading 4.90 mN•m FWD CQ-403C (more than 50 g) (more than 1.76 oz) Mode T orque Meter Meter Reading FWD 2.16 - 4.7 mN•m (22 - 48 g•cm) CQ-102C (0.31 - 0.67 oz•inch) FWD 0.05 - 0.29 mN•m (0.5 - 3 g•cm) Back T ension (0.
– 8 – SECTION 5 ELECTRICAL ADJUSTMENTS T ape Speed Adjustment Mode: playback Procedure: – Normal Speed – 1. Set [REC TIME] switch (S601) to NORMAL (4.8 cm/s) posi- tion, and playback the tape (WS-48A) . 2. Adjust R V601 so that frequency counter reading becomes 3,040 Hz.
TCM-20D V/21D V/22D V/23D V – 9 – – 10 – SECTION 6 DIA GRAMS 6-1. BLOCK DIA GRAM MIC AMP, REC/PB EQ AMP IC101 (1/3) POWER AMP, VOR CONTROL,REGULATOR IC101 (2/3) 05 • SIGNAL PATH : PLAY : REC.
TCM-20D V/21D V/22D V/23D V – 11 – – 12 – 6-2. PRINTED WIRING BO ARDS C140 C110 C121 R610 C126 C108 R137 R110 R114 C145 R119 R109 R108 C144 C146 C148 C107 C141 C106 R103 R102 R105 R106 R134 R1.
TCM-20D V/21D V/22D V/23D V – 13 – – 14 – Note on Schematic Diagram: • All capacitors are in µF unless otherwise noted. pF: µµF 50 WV or less are not indicated except for electrolytics and tantalums. • All resistors are in Ω and 1 / 4 W or less unless otherwise specified.
• IC Block Dia gram IC101 LA4168ML-TE-L + – + – + – + – 21 22 23 24 25 26 27 28 29 30 2 3 5 4 6 7 8 9 10 1 11 12 13 14 15 16 17 18 19 20 300k EQ MIC 2.
– 17 – Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark (2) MECHANISM DECK SECTION-1 (MT -20D V -118) 51 X-3377-250-1 LEVER, (2) ASSY , PINCH 52 3-925-146-01 BUTTON (FF) (.
– 18 – (3) MECHANISM DECK SECTION-2 (MT -20D V -118) Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark 101 3-321-483-11 RING, RET AINING (0.
– 19 – SECTION 8 ELECTRICAL P ARTS LIST Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark * A-3021-314-A MAIN BOARD, COMPLETE ********************* 3-924-741-01 TERMINAL, PLUS < CAP ACITOR > C101 1-163-809-11 CERAMIC CHIP 0.
– 20 – Ref. No. Part No. Description Remark Ref. No. Part No. Description Remark R105 1-216-049-11 RES-CHIP 1K 5% 1/10W R106 1-216-049-11 RES-CHIP 1K 5% 1/10W R108 1-216-085-00 MET AL CHIP 33K 5% 1/10W R109 1-216-037-00 MET AL CHIP 330 5% 1/10W R110 1-216-037-00 MET AL CHIP 330 5% 1/10W R111 1-216-069-00 MET AL CHIP 6.
An important point after buying a device Sony TCM-21DV (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Sony TCM-21DV yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Sony TCM-21DV - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Sony TCM-21DV you will learn all the available features of the product, as well as information on its operation. The information that you get Sony TCM-21DV will certainly help you make a decision on the purchase.
If you already are a holder of Sony TCM-21DV, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Sony TCM-21DV.
However, one of the most important roles played by the user manual is to help in solving problems with Sony TCM-21DV. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Sony TCM-21DV along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
