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WM-EX678
SERVICE MANUAL
Ver 1.0 1999 . 01
AEP Model UK Model
Manufactured under license from Dolby Laboratories Licensing Corporation. "DOLBY" and the double-D symbol a are trademarks of Dolby Laboratories Licensing Corporation.
Model Name Using Similar Mechanism Tape Transport Mechanism Type
NEW MT-WMEX672-162
SPECIFICATIONS
Tape section Frequency response (Dolby NR off) Output General Power requirements Mass Playback : 30 18,000 Hz Headphones (REMOTE 2 jack) Load impedance 8 300 1.5 V One rechargeable battery or one R6 (size AA) battery Approx. 77.7 × 109.1 × 21.4 mm (31/8 × 43/8 × 27/32 inches), incl. projecting parts and controls Approx. 140 g (5.0 oz.) Approx. 205 g (7.3 oz) (incl. rechargeable battery and cassette) Battery case (1) Stereo earphones with remote control (1) Battery charger (1) Rechargeable battery (NC-6WM, 1.2 V, 600 mAh, Ni-Cd) (1) Rechageable battery carrying case (1) Carrying pouch (1)
Supplied accessories
Dimensions (w/h/d)
Design and specification subject to change without notice.
CASSETTE PLAYER
MICROFILM
TABLE OF CONTENTS 1. SERVICE NOTE ······························································· 3 2. GENERAL ·········································································· 5 3. DISASSEMBLY
3-1. CASE BLOCK ASSEMBLY ·········································· 7 3-2. MAIN BOARD ······························································· 8 3-3. BELT (F2) ······································································· 8 3-4. MOTOR (F2) (M901) ····················································· 9 3-5. CASSETTE LID ASSEMBLY ······································· 9 3-6. REEL ORNAMENT ASSEMBLY ······························· 10 3-7. HOLDER ASSEMBLY ················································ 10 3-8. PINCH LEVER (N)/(R) ASSEMBLY ·························· 11 3-9. MAGNETIC HEAD (HP901) ······································· 11
4. MECHANICAL ADJUSTMENT ································ 12 5. ELECTRICAL ADJUSTMENT ·································· 12 6. DIAGRAMS
6-1. BLOCK DIAGRAM ····················································· 13 6-2. IC BLOCK DIAGRAMS ·············································· 15 6-3. PRINTED WIRING BOARD ······································· 16 6-4. SCHEMATAC DIAGRAM ··········································· 19 6-5. IC PIN FUNCTION ······················································ 22
7. EXPLODED VIEWS
7-1. CABINET BLOCK, MAIN BOARD ··························· 24 7-2. MECHANISM DECK BLOCK ···································· 25
8. ELECTRICAL PARTS LIST ······································· 26
Notes on chip component replacement · Never reuse a disconnected chip component. · Notice that the minus side of a tantalum capacitor may be damaged by heat. Flexible Circuit Board Repairing · Keep the temperature of soldering iron around 270°C during repairing. · Do not touch the soldering iron on the same conductor of the circuit board (within 3 times). · Be careful not to apply force on the conductor when soldering or unsoldering.
SAFETY-RELATED COMPONENT WARNING!! COMPONENTS IDENTIFIED BY MARK ! OR DOTTED LINE WITH MARK ! ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.
--2--
SECTION 1 SERVISE NOTE
[Service Mode]
The service mode enables to operate the mechanism of WM-EX678 while the MAIN board is opened. Rotation of the idler gear (A) (S side) is detected using the photoreflector (PH701) in the WM-EX678. PH701 is located on the MAIN board, therefore the rotation of the idler gear (A) (S side) cannot be detected by PH701 when the MAIN board is removed. As a result, the motor cannot be controlled and cannot run correctly. To repair the machine after the MAIN board is removed while the main power is turned on, follow the procedures as described below. 1. Setting 1) Remove the cabinets referring to section "3. DISASSEMBLY". Open the MAIN board. 2) Connect the motor (M901) and the plunger solenoid (PM901) to the MAIN board using the jumper wires. When the extension jig (1-769-143-11) (10 wires as a set) is used, they can be connected easily. 3) Short the TAPE DETECT switch (S901-1) and the ATS switch (S901-2). 4) Connect an AF oscillator to TP53 (P. IN) and TP14 (GND). 5) Connect DC 1.3 V from external regulated power supply to ` and ' terminals of the battery. 2. PRE-SET status The PLAY, FF and REW modes can be entered only from the PRESET status. 1) Check that the slider (NR) is in the center position (S701), and the FWD/REV switch is also in the center position. When these switches are not in the center position, set them to the PRE-SET status as follows. 2) Move the FWD/REV switch (S701) to the same position as the slider (NR) is set. 3) The slider (NR) can be moved when the main power of the regulated power supply is turned OFF once then back ON. Move the FWD/REV switch (S701) to the center position in synchronism with the timing when the slider (NR) is moved. 3. FF, REW modes 1) Check that the PRE-SET status is set. 2) Connect square wave or sine wave to TP53 (P. IN) and TP14 (GND). (See illustration below.) 3) Press the p switch (S702) to enter the STOP mode. 4) Press the FF AMS switch (S704) and the REW AMS switch (S705). 4. PLAY mode 1) Check that the PRE-SET status is set. 2) Connect square wave or sine wave to TP53 (P. IN) and TP14 (GND). (See illustration below.) 3) Press the p switch (S702) to enter the stop mode. 4) When the 9(REPEAT switch (S703) of the MAIN board is pressed, the slider (N/R) moves once to the F side then moves to the R side. When the FWD/REV switch (S701) is pressed in the synchronism with the above timing, the machine can enter the PLAY (R side) mode. Press the 9(REPEAT switch (S703) again, and move the FWD/REV switch (S701) in the synchronism with the motion of slider (NR). It enables the machine to enter into the PLAY (F side) mode. Note 1: When you fail to enter the PLAY mode, re-start from step 1) PRE-SET status. Note 2: Regarding the 9(REPEAT (S703), p (S702), FF AMS (S704), and REW AMS (S705) switches, use these switches of the remote control unit as much as possible. Note 3: If a headphones are used, the beep sound shows the timing of the FWD/REV switch (S701).
TAPE DETECT ATS SWITCH SWITCH (S901-1) (S901-2)
MAIN BOARD (SIDE B) --
Plunger (PM901) Short FF AMS (S704) AF OSC Square-wave (sine wave) 10 Hz, -3.5 dB Battery terminal ` Battery terminal ' +
TP53 (P.IN) PH701
oeREPEAT
REW AMS (S705)
(S703)
M M901
S701 FWDSTOPREV TP14 (GND)
p(S702)
--3--
[ Slider (NR) ]
[ Tape drive mechanism ] Tape drive mechanism in PLAY mode
Gear (NR) (FWD : Left side REV : Right side) Idler Gear Idler Gear (A)(S side) (A)(T side) Gear Gear (REEL)(S side) (REEL)(T side) Motor Pulley Cam Gear
Slider (NR)
F side R side Center
Gear (Y) Idler Gear
Clutch Assy
Insert Flywheel (N)
Pulley (Reverse) Insert Flywheel (R)
Tape drive mechanism in FF mode
Tape drive mechanism in REW mode
Idler Gear (A)(T side) Gear (REEL)(T side) Cam Gear
Gear (FR) (FF : Left side)
Gear (FR) (REW : Right side)
Idler Gear (A)(S side) Gear (REEL)(S side) Motor Pulley
Motor Pulley
Cam Gear
Clutch Assy Gear (Y)
Gear (Y)
Clutch Assy
Pulley (Reverse) Insert Flywheel (N) Insert Flywheel (R)
Insert Flywheel (N)
Pulley (Reverse) Insert Flywheel (R)
--4--
SECTION 2 GENERAL
This section is extracted from instruction manual.
--5--
SECTION 3 DISASSEMBLY
Note : Follow the disassembly procedure as shown in the flow chart below.
Set
Case block assembly
Main board
Belt (F2)
Motor (F2) (M901)
Cassette lid assembly
Reel ornament assembly
Holder assembly
Pinch lever (N/R) assembly
Magnetic head (HP901)
Note : Follow the disassembly procedure in the numerical order given.
3-1. CASE BLOCK ASSEMBLY
Claw
1 Battery case Lid
S707
3 Two screws (M1.4 × 2.5)
2 Screw (M1.4 × 2.5)
4 Two screws (M1.4 × 2.5)
knob (HOLD) Note: When assembling the case block assembly, align the knob (HOLD) with the position of S707.
5 Remove the case block assembly in the direction of the arrow.
--7--
3-2. MAIN BOARD
2 Remove soldering (four points) from the leaf switch.
3 Remove soldering (two points) from plunger solenoid. 1 Remove soldering (six points) from the head flexible boards. 7 MAIN board Note : Be careful of the claw. 6 Screw (M1.4)
S701
5 Two screws (M1.4)
4 Remove soldering (four points) from motor.
Claw
Head flexible board
SLIDER Note: When assembling the MAIN board, align the slider with the position of S701.
3-3. BELT (F2)
3 Belt (F2)
2 Terminal board (Battery')
1 Remove soldering from the battery terminal board.
--8--
3-4. MOTOR (F2) (M901)
1 Two screws (M1.4)
2 Motor (F2) (M901)
3-5. CASSETTE LID ASSEMBLY
1 Screw (M1.4 × 2) 5 Cassette Lid Assembly
2 Two screws (M1.4 × 2)
3 Open the cassette lid.
4 Shaft
--9--
3-6. REEL ORNAMENT ASSEMBLY
1 Reel Ornamene Assembly Note : Remove the assembly while removing the 5 claws and the boss carefully.
Claw
Claw
Claw Claw
Boss
Claw
3-7. HOLDER ASSEMBLY
2 Shaft
7 Cassette Bracket Assembly 5 Lock Lever (S) 3 Lock Lever (B) 4 Screw (Toothed Lock) (M1.4) 1 Two screws (M1.4 × 1.4) 6 Shaft
9 Remove the holder assembly in the direction of the arrow.
8 Remove soldering from six head flexible boards.
-- 10 --
3-8. PINCH LEVER (N)/(R) ASSEMBLY
Claw
1 Remove the pinch lever (R) assembly in the direction of the arrow. Note : Be careful of the claw. 2 Remove the pinch lever (N) assembly in the direction of the arrow. Note : Be careful of the claw.
Claw
3-9. MAGNETIC HEAD (HP901)
Claw
1 Remove the magnetic head (HP901) in the direction of the arrow. Note : Be careful of the claw.
-- 11 --
SECTION 4 MECHANICAL ADJUSTMENT
1. PRECAUTION Clean the following parts with a denatured-alcohol-moistened swab: playback head pinch roller rubber belts capstan Demagnetize the playback head with a head demagnetizer. Do not use a magnetized screwdriver for the adjustments. After the adjustments, apply suitable locking compound to the parts adjusted. The adjustments should be performed with the rated power supply voltage unless otherwise noted. 1. 2.
SECTION 5 ELECTRICAL ADJUSTMENT
PRECAUTION Specified voltage: 1.3 V (DC) Switch position (MENU) aNR : OFF AVLS : OFF BL SKIP : OFF MB/RV GRV : OFF
2. 3. 4. 5.
Test Tape Tape WS-48A Signal 3 kHz, 0 dB Used for Tape Speed Adjustment
· Torque Measurement Mode FWD FWD Back Tension REW REW Back Tension FF, REW Torque Meter CQ-102D CQ-102D CQ-102C CQ-102C CQ-201B Meter Reading 16 to 25 g·cm (0.22 to 0.34 oz·inch) 0.5 to 1.5g·cm (0.007 to 0.020 oz·inch) 16 to 25 g·cm (0.22 to 0.34 oz·inch) 0.5 to 1.5 g·cm (0.007 to 0.020 oz·inch) More than 50 g·cm (More than 0.69 oz·inch) Tape Speed Adjustment Procedure:
Test tape WS-48A (3kHz, 0dB) 16 Set +
2 REMOTE jack (J301)
Frequency counter
1. 2.
3.
Enter the FWD playback mode. Adjust RV601 so that the value of the frequency counter reading becomes 3,000 Hz. Specification value: Frequency counter 2,970 Hz 3,030 Hz Check that the frequency deviation at the beginning and ending of a tape is within 1.5 % (45 Hz).
Adjustment Point: [MAIN BOARD] -- SIDE B --
RV601
`?
-- 12 --
SECTION 6 DIAGRAMS
6-1. BLOCK DIAGRAM
B+ SWITCH Q305 AUDIO MASTER AMP IC301 17 RF OUT HP901 (PLAYBACK) L-CH FWD R-CH R-CH 1 5 FWD IN-L PREAMP REV IN-L MTL DRV-L PRE OUT-L 18 BASE 19 VCC DDC B+ RIPPLE FILTER Q301 BATT B+
WM-EX678
· SIGNAL PATH : PLAYBACK R-CH: Same as L-CH
6-2. IC BLOCK DIAGRAMS
IC301 TA2123F (EL)
BST OUT PW IN C LPF PW NF A PW IN A PW IN B PW NF B BST NF AGC IN
EQ A
14 VCC 7 4 IN-L SW 13 8 DOLBY NR AMP IC302 OUT-L 5
RV301 VOL 28 PW IN-L POWER AMP PW OUT-L
J301 2 REMOTE
36 35
34 BST
33
32 31
30 29 28 27 26
25
+
R-CH POWER AMP
20
EQ METAL CONTROL
R-CH
R-CH AVLS CONTROL SWITCH Q304 32
PW IN-C BST OUT BASS BOOST AMP V/I PW NF-L R-CH EQ-L 29 30 POWER AMP BEEP
PW OUT-C
21
F/R SW
L-CH REV R-CH R-CH
M/N SW
C-AMP SW 37 MT TC 38
BATT B+ VCC DATA REMO GND
PW C BEEP
33
BEEP 39 AMS OUT 40
44
46
+
S901-2 (ATS) R-CH
12
AMS IN
AMS
AGC DET
AMS OUT
BST SW
BEEP
MT SW PW SW
AGC IN
40
43
35
39
41 42 S707 HOLD
STOP REV
S901-1 (TAPE DETECT)
REVIVE/GROOVE SWITCHING Q302 SYSTEM CONTROLLER IC701
VREF IN 48 VREF MTL DRV
4 3 2
9
5
1
38
8
39
10
7
36
12 11
6 16
CTL DOLBY
CTL F/R
MEGA BASS CTL
BOOST CTL
MOTOR RESTART MOTOR DIR MOTOR BRK AVLS CTL
MOTOR CTL MUTE CTL AMP CTL
REVIVE CTL
BEEP
CASSETTE SW
DATA/RMUM KEY IN
REV SW CENTER SW FWD SW
AMS IN
1 2 3 IN A-F IN B-F VREF OUT
4 IN B-R
5 IN A-R
6 PRE NF-A
7 PRE OUT A
8 MTL DRV A
9 MTL DRV B
10 11 PRE OUT B PRE NF-B
STOP 1 SET
STOP 2 SET
SPEED CTL
BATT DET
28
29
48 46 47
44
45
15
13 BATT B+
14 DDC B+
35
RESET
XT0
XT1
X701 32.768kHz
IC302 NJM2185AV-TE2
IC601 MM1279XVBE
RV601 TAPE SPEED
20 PV 19 U V 1
Q603 SPEED CONTROL SWITCH 11 COMPARATOR OUT + IN+ VSP 10 9
OUTA
VEXT
THP601 RESET SIGNAL GENERATOR IC703
14
13
12
11
INA
10
9
DETA
V+
DCA
SW
8
PW 2 3 4 MOTIVE CONTROL CIRCUIT PRE DRIVER 18 17 16 15 SOFT SWITCH 14 TC1 13 TC2 SPEED CONTROL CURRENT CONTROL PU GND VCC FC
G2
SPEED CONTROL M901 (CAPSTAN/REEL) DDC B+ D703 BATT LED BATT 19 ROTATION DETECT SENSOR PH701 W DDC B+ U 19 V 1 W 3 7 VREF SWITCH & LOGIC CIRCUIT OSC CIRCUIT BIAS START REFERENCE 8 VOLTAGE
G1
V/I
BIAS CIRCUIT
+
W GND
SUM WEIGHT +
MOTOR DRIVE CIRCUIT
VDD B+
REGULATOR IC704
GM A-CH BLOCK
OSC DR
5 6 7 8
MOTIVE/ OSC
MOTIVE LOGIC
U
OSC
DR
V
DIRECTION CONTROL
CAPSTAN/REEL MOTOR DRIVE IC601 5
DDC B+
DC/DC CONVERTER IC702
6 PHOTO REFLECTOR SWITCH & BUFFER Q702
DRY BATTERY SIZE "AA" (IEC DESIGNATION R6) 1P. 1.5V
VREF
B-CH BLOCK: SAME AS A-CH.
START
BIAS REFERENCE VOLTAGE
AMS IN
+
FWD
S701 (DIRECTION)
MEGA BASS/GROOVE SWITCHING Q303
S702 705 R-CH
OFF
HOLD
MT SW PW SW BST SW F/R SW PRE SW M/N SW
41 42 43 44 45 46
SWITCH
PRE A +
PRE B MIX + 13 AMS SW
PRE GND 47
IN PHOTO 37
BATT B+ MOTOR BRAKE SWITCH Q602-2 MOTOR CONTROL SWITCH Q601, 602-1 + Q604 MOTOR CONTROL SWITCH BATTERY PACK (NI-CD) (NC-6WM 1.2V)
1 GND
2 IREF
3 VREF
4 INB
5 OUTB
6 DCB
7 DETB
VSP 9
IN+ 10
PHOTO CTL 18
PM CTL 17 16
PLUNGER DRIVE Q701
PM901 (PLUNGER)
-- 13 --
-- 14 --
-- 15 --
+
+
+
PW OUT-R
22
+
AGC DET
EQ B
DET
24 RF IN 23 PW GND 22 OUT B PW B 21 OUT C
+
PW A 20 OUT A 19 VCC RIPPLE FILTER
18 BASE 17 RF OUT 16 GND 15 AMS DET 14 AMS MIX
COMPARATOR
12
INVERTER
OUTPUT BIAS
12 R1 11 OUT
WM-EX678
6-4. SCHEMATIC DIAGRAM
1.3 Vp-p
30.5 µsec
2.8 Vp-p
11 µsec
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. · % : indicates tolerance. · C : panel designation. Note: The components identified by mark ! or dotted line with mark ! are critical for safety. Replace only with part number specified. · U : B+ Line. · H : adjustment for repair. · Power voltage is dc 1.5V and fed with regulated dc power supply from battery terminal. no mark : PB · Waveforms are taken with a oscilloscope. Voltage variations may be noted due to normal production tolerances. · Signal path. E : PB · Abbreviation FR : French EE : East European
-- 19 --
-- 20 --
-- 21 --
WM-EX678
SECTION 7 EXPLODED VIEWS
NOTE: · -XX, -X mean standardized parts, so they may have some differences from the original one. · Items marked "*" are not stocked since they are seldom required for routine service. Some delay should be anticipated when ordering these items. · Color Indication of Appearance Parts Example: KNOB, BALANCE (WHITE) . . . (RED) Parts of Color Cabinet's Color · · The mechanical parts with no reference number in the exploded views are not supplied. Abbreviation FR : French EE : East European
When indicating parts by reference number, please include the board name.
6-5. IC PIN FUNCTION
· MAIN BOARD IC701 ML63512-119TBZ060 (SYSTEM CONTROL)
Pin No. 1 2 3 4 5 Pin Name CTL DOLBY FWD SW CENTER SW REV SW CASSETTE SW I/O O I I I I Description Dolby ON/OFF control signal output to Dolby NR amplifier (IC302) "L": Dolby NR, ON, H: Dolby NR OFF Detection switch (S701) input terminal "L": FWD Detection switch (S701) input terminal "L": CENTER Detection switch (S701) input terminal "L": REV Cassette detection switch (S901-1) input terminal "L": with cassette "H": without cassette Serial data output of communication with the remote commander having phone, and the remote control sensing 6 DATA/RMUM I/O signal input from remote commander having phone Tone selection signal output to TA2123F (IC301) 7 REVIVE CTL MEGA BASS CTL F/R CTL BOOST CTL O "L": REVIVE "H": OFF/MEGA BASS/GROOVE Tone selection signal output to TA2123F (IC301) "L": MEGA BASS "H": OFF/REVIVE/GROOVE FWD/REV selection signal output to TA2123F (IC301) "L": FWD "H": REV Bass boost control signal output to TA2123F (IC301) "L": OFF "H": ON Power supply ON/OFF control signal output to TA2123F (IC301) 11 AMP CTL O "L": power supply OFF "H": power supply ON (The power supply ON/OFF control of Dolby NR amplifier (IC302) is performed.) 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 MUTE CTL SET STOP1 SET STOP2 BATT DET KEY IN PM CTL PHOTO CTL LED BATT LED DOLBY VDD1 VSS VDD VDDH CB1 CB2 VDDL XT0 XT1 TAT1B TAT2B OSCM OSC0 O I I I I O O O O I I I Power mute control signal output to TA2123F (IC301) "L": mute ON "H": mute OFF Battery voltage detection input terminal when the machine is stopped. (A/D input) Reference voltage input terminal when the machine is stopped. (A/D input) Battery voltage detection input terminal (A/D input) Key input terminal (A/D input) Plunger drive signal output "L": plunger ON Control signal output to the rotation detection circuit of the capstan/reel motor "L": rotation detection circuit ON LED (D703) drive signal output to BATT display "L": LED ON Drive signal output to aNR display Not used in this machine (empty terminal) Power supply terminal for external interface (+2.5 V) Ground terminal Power supply terminal (+1.5 V) Step-up power supply terminal for back-up Terminal to which condenser for step-up power supply is connected Terminal to which condenser for step-up power supply is connected Power supply terminal for internal logic Terminal to which main system clock is connected (32.768 kHz) Terminal to which main system clock is connected (32.768 kHz) Test input terminal Normally, fixed to "H". Test input terminal Normally, fixed to "H". Terminal to which external capacitor for oscillation is connected Not used in this machine (empty terminal) Terminal to which resistance for high-speed CR oscillation (800 kHz) is connected Not used in this machine (empty terminal) Terminal to which resistance for high-speed CR oscillation (800 kHz) is connected Not used in this machine (empty terminal) System reset signal input from the reset signal generator (IC703) "L": reset 35 36 37 38 RESET BEEP IN PHOTO AVLS CTL I O I O "L" is input for several hundreds msec after power supply starts up, then "H" is input. Beep sound output to TA2123F (IC301) Rotation detection input of capstan/reel motor (M901) AVLD ON/OFF control signal output "L": AVLS OFF, "H": AVLS ON 48 46 MOTOR DIR O 45 MOTOR CTL O Pin No. 39 40 41 42 43 44 Pin Name AMS IN LED AVLS LED BLSKIP LED MB LED REVIVE SPEED CTL I/O I O O O O O Description AMS detection signal input from TA2123F (IC301) "H": No music Drive signal output for AVLS display Not used in this machine (empty terminal) Drive signal output for BL SKIP display Not used in this machine (empty terminal) Drive signal output for MG GRV display Not used in this machine (empty terminal) Drive signal output for RV GRV display Not used in this machine (empty terminal) Motor speed control signal output to capstan/reel motor drive IC (IC601) "L": normal "H": half speed Motor start control signal output to capstan/reel motor drive IC (IC601) "H": motor ON Motor direction control signal output to capstan/reel motor drive IC (IC601) "L": clockwise "H": counter-clockwise Motor brake ON/OFF control signal output to capstan/reel motor drive IC (IC601) "H": brake ON (Normally "L" is input.) Signal output for motor start-up status control to capstan/reel motor drive IC (IC601) O "H": during FF/REW motor rotating
7-1. CABINET BLOCK, MAIN BOARD 13 23
not supplied
12 11 30 14 15 14
8 9 10
O O O
47
MOTOR BRK MOTOR RESTART
O
10
28 27 9
S901 MT-WMEX672-162
23
16 8 24 17
not supplied
7 6 4 29 1 5 25 1 25
18 19
7 3
not supplied
1 2
Ref. No. 1 1 2 3 4 4 5 6 7 8 8 9 10 11 12 Part No. Description Remarks Ref. No. 13 14 15 16 17 18 19 23 23 24 25 27 28 29 30 S901 Part No. 3-029-205-31 3-366-892-01 X-3376-277-1 X-3376-279-1 3-365-630-41 3-029-219-01 3-029-220-01 3-704-197-11 3-704-197-13 Description MD COVER SCREW (M1.4) BRACKET ASSY BRACKET (CASSETTE) ASSY SCREW (M1.4) Remarks
3-704-197-21 SCREW (M1.4 × 2.5), LOCKING (SILVER) 3-704-197-23 SCREW (M1.4 × 2.5), LOCKING (BLACK) (AEP,FR,EE) 3-029-230-01 KNOB (HOLD) 3-029-227-01 PLATE (TERMINAL), ORNAMENTAL 3-029-233-51 LID, BATTERY CASE (SILVER) 3-029-233-61 3-345-648-71 3-029-213-01 3-375-114-41 A-3021-172-A A-3021-173-A 3-029-210-01 X-3376-278-1 3-366-892-11 3-029-217-01 LID, BATTERY CASE (BLACK)(AEP,FR,EE) SCREW (M1.4), TOOTHED LOCK TERMINAL BOARD SCREW MAIN BOARD, COMPLETE (AEP,UK,EE) MAIN BOARD, COMPLETE (FR) TERMINAL BOARD (MINUS) TERMINAL BOARD ASSY, BATTERY SCREW (M1.4 × 1.4) LEVER (B), LOCK
34
OSC1
O
KNOB (OPEN) SPRING, TENSION SCREW (M1.4 × 2.0), LOCKING (SILVER) SCREW (M1.4 × 2.0), LOCKING (BLACK) (AEP,FR,EE) 3-032-323-01 PAPER (A), SHIELD 3-032-805-01 3-309-595-11 3-031-460-01 3-032-905-01 3-328-483-11 SHEET (T1.6) SHEET, INSULATING, PACK SHEET (BT) CUSHION (TO.4) SHEET
1-762-553-11 SWITCH, LEAF
-- 22 --
-- 23 --
-- 24 --
7-2. MECHANISM DECK BLOCK (MT-WMEX672-162)
64
67
63 60
M901
59 75 76
PM901
62 61
65 68 66 77 78 80 79 69 79 77
74
73 70 81 58 72 57 54 71 53 51 52 56 55 72 71
HP901
Ref. No. 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67
Part No. X-3377-039-1 X-3376-295-1 3-029-271-01 X-3376-294-1 3-029-275-01 3-029-278-01 3-029-276-01 3-029-289-01 X-3376-813-1 3-932-724-21 3-029-287-01 3-386-694-01 3-029-306-11 3-029-280-01 3-029-268-11
Description HOLDER ASSY (/M) PINCH LEVER (R) ASSY SPRING (HD) PINCH LEVER (N) ASSY WASHER (STOPPER N) WASHER WASHER (STOPPER R) WASHER CLUTCH ASSY (F) WASHER SPRING (TG), TORSION WASHER FLYWHEEL (N), INSERT BELT (F2) FLYWHEEL (R), INSERT
Remarks
Ref. No. 68 69 70 71 72 73 74 75 76 77 78 79 80 81 HP901 M901 PM901
Part No. 3-029-274-01 3-007-433-01 X-3377-037-1 3-010-274-02 3-010-954-01 3-029-282-01 3-029-285-01 3-029-284-01 3-029-281-01 3-010-273-02 3-029-273-01 3-029-283-01 3-029-286-01 3-029-288-01 1-500-576-11
Description RETAINER (F2), MOTOR SHEET (N), REFLECTION CHASSIS ASSY (F) (/M) TABLE, REEL SPRING (BT), COMPRESSION GEAR (Y) GEAR, CAM LEVER, TRIGGER GEAR, IDLER (B) GEAR (REEL) GEAR (FR) GEAR, IDLER (A) GEAR (NR) PULLEY, REVERSE HEAD, MAGNETIC (PLAYBACK)
Remarks
3-007-428-01 WASHER (R) 3-029-765-01 SCREW (M1.4), TOOTHED LOCK
1-763-166-11 MOTOR (CAPSTAN/REEL) (WITH PULLEY) 1-454-674-32 SOLENOID, PLUNGER
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MAIN
NOTE: · Due to standardization, replacements in the parts list may be different from the parts specified in the diagrams or the components used on the set. · -XX, -X mean standardized parts, so they may have some difference from the original one. · Items marked "*" are not stocked since they are seldom required for routine service. Some delay should be anticipated when ordering these items. Ref. No. Part No. Description · ·
SECTION 8 ELECTRICAL PARTS LIST
CAPACITORS: uF: µF RESISTORS All resistors are in ohms. METAL: metal-film resistor METAL OXIDE: Metal Oxide-film resistor F: nonflammable COILS uH: µH Abbreviation FR : French EE : East European Remarks Ref. No. C323 C601 C602 C603 C604 C605 C606 C607 C608 C609 C701 C702 C703 C704 C705 C706 C707 C708 C709 C710 C711 C712 Part No. 1-115-412-11 1-125-837-91 1-107-826-91 1-115-467-11 1-164-156-11 1-107-826-91 1-162-970-11 1-162-970-11 1-162-970-11 1-135-151-21 1-119-750-11 1-104-851-11 1-162-915-11 1-107-826-91 1-115-156-11 1-115-156-11 1-115-156-11 1-115-156-11 1-115-156-11 1-115-156-11 · SEMICONDUCTORS In each case, u: µ, for example: uA...: µA... , uPA... , µPA... , uPB... , µPB... , uPC... , µPC... , uPD..., µPD...
When indicating parts by reference number, please include the board name. The components identified by mark ! or dotted line with mark ! are critical for safety. Replace only with part number specified.
· ·
Description CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP TANTALUM CHIP TANTAL. CHIP TANTAL. CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP 680PF 1uF 0.1uF 0.22uF 0.1uF 0.1uF 0.01uF 0.01uF 0.01uF 4.7uF 22uF 10uF 10PF 0.1uF 1uF 1uF 1uF 1uF 1uF 1uF 1uF 1uF 5% 10% 10% 10%
Remarks 25V 6.3V 16V 10V 25V 16V 25V 25V 25V 4V 6.3V 10V 50V 16V 10V 10V 10V 10V 10V 10V 10V 10V
A-3021-172-A MAIN BOARD, COMPLETE (AEP,UK,EE) ******************** A-3021-173-A MAIN BOARD, COMPLETE (FR) ********************* < CAPACITOR > C101 C102 C103 C104 C105 C106 C107 C108 C109 C201 C202 C203 C204 C205 C206 C207 C208 C209 C301 C302 C303 C304 C305 C306 C307 C308 C309 C310 C311 C312 C313 C314 C315 C316 C317 C318 C319 C320 C321 C322 1-107-520-11 1-115-156-11 1-115-156-11 1-115-156-11 1-113-619-11 1-115-467-11 1-164-505-11 1-164-227-11 1-164-677-11 1-107-520-11 1-115-156-11 1-115-156-11 1-115-156-11 1-113-619-11 1-115-467-11 1-164-505-11 1-164-227-11 1-164-677-11 1-119-663-11 1-164-156-11 1-117-181-11 1-115-156-11 1-126-236-11 1-109-935-11 1-115-467-11 1-165-112-11 1-115-467-11 1-135-149-21 1-164-156-11 1-115-156-11 1-109-935-11 1-135-187-21 1-135-187-21 1-125-837-91 1-162-964-11 1-135-201-11 1-164-156-11 1-162-968-11 1-115-416-11 1-109-937-11 TANTAL. CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP TANTAL. CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP TANTAL. CHIP CERAMIC CHIP TANTAL. CHIP CERAMIC CHIP ELECT TANTAL. CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP TANTALUM CHIP CERAMIC CHIP CERAMIC CHIP TANTAL. CHIP TANTAL. CHIP TANTAL. CHIP CERAMIC CHIP CERAMIC CHIP TANTALUM CHIP CERAMIC CHIP CERAMIC CHIP CERAMIC CHIP TANTAL. CHIP 33uF 1uF 1uF 1uF 0.47uF 0.22uF 2.2uF 0.022uF 0.033uF 33uF 1uF 1uF 1uF 0.47uF 0.22uF 2.2uF 0.022uF 0.033uF 47uF 0.1uF 4.7uF 1uF 330uF 4.7uF 0.22uF 0.33uF 0.22uF 2.2uF 0.1uF 1uF 4.7uF 2.2uF 2.2uF 1uF 0.001uF 10uF 0.1uF 0.0047uF 1000PF 6.8uF 20% 2.5V 10V 10V 10V 6.3V 10V 16V 25V 16V 2.5V 10V 10V 10V 6.3V 10V 16V 25V 16V 2.5V 25V 2.5V 10V 2V 4V 10V 16V 10V 10V 25V 10V 4V 4V 4V 6.3V 50V 4V 25V 50V 25V 2.5V
10% 10% 10% 10% 20% 20% 20% 0.5PF 10%
10% 10% 10% 10% 20%
10% 10%
1-115-156-11 CERAMIC CHIP 1-115-156-11 CERAMIC CHIP
10% 10% 20%
< CONPOSITION CIRCUIT BLOCK > CB301 CB303 1-127-575-21 CERAMIC CHIP 1-127-576-21 CERAMIC CHIP < DIODE > D701 D702 D703 D709 D710 D711 8-719-404-50 8-719-072-70 8-719-067-79 8-719-068-83 8-719-422-58 DIODE MA111-TX DIODE MA2ZD14001S0 LED CL-170HR-CD-T-AB (BATT) DIODE MAZL068D0LS0-TX/L DIODE MA8062 470PF 22000PF 0 0 50V 50V
20% 20% 20% 10%
10% 20%
8-719-422-58 DIODE MA8062 < FERRITE BEAD >
20% 20% 20% 10% 10% 20% 10% 5% 20%
FB101 FB201
1-469-125-21 FERRITE 1-469-125-21 FERRITE < IC >
0uH (AEP,UK,EE) 0uH (AEP,UK,EE)
IC301 IC302 IC601 IC701 IC702 IC703 IC704
8-759-549-78 8-759-488-80 8-759-356-46 8-759-580-19 8-759-566-77
IC TA2123F(EL) IC NJM2185AV-TE2 IC MM1279XVBE IC ML63512-119TBZ060 IC XC6371C251PL
8-759-430-08 IC PST9008NL 8-759-280-84 IC S-81211SG-QA-T1
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MAIN
Ref. No. Part No. Description < JACK > J301 1-779-867-81 JACK (2 REMOTE) R212 JC114 JC214 1-216-864-11 METAL CHIP 1-216-864-11 METAL CHIP < COIL > L701 1-412-032-11 INDUCTOR CHIP 100uH < PHOTO INTERUPTER > PH701 8-749-014-43 PHOTO PR-20-T < TRANSISTOR > Q301 Q302 Q303 Q304 Q305 Q601 Q602 Q603 Q604 Q701 Q702 8-729-800-71 8-729-423-75 8-729-423-75 8-729-421-23 8-729-422-18 8-729-403-42 8-729-402-84 8-729-420-50 8-729-420-50 8-729-230-72 TRANSISTOR 2SB815B7-TB TRANSISTOR XN1116 TRANSISTOR XN1116 TRANSISTOR XN1216 TRANSISTOR XN4315 TRANSISTOR XN1401 TRANSISTOR XN4601 TRANSISTOR UN5215 TRANSISTOR UN5215 TRANSISTOR 2SA1362YG 0 0 5% 5% 1/16W 1/16W R213 R250 1-216-853-11 METAL CHIP 1-216-813-11 METAL CHIP 470K 220 1-216-825-11 METAL CHIP 2.2K Remarks Ref. No. R211 R212 Part No. Description 3.3K 100 5% 5% Remarks 1/16W 1/16W (AEP,UK,EE) 5% 1/16W (FR) 5% 1/16W 5% 1/16W (FR) 0.50% 5% 5% 5% 5% 5% 5% 5% 0.50% 5% 5% 5% 5% 5% 5% 5% 0.50% 0.50% 0.50% 0.50% 0.50% 0.50% 5% 5% 5% 5% 5% 5% 5% 5% 5% 0.50% 0.50% 0.50% 0.50% 0.50% 5% 5% 5% 0.50% 0.50% 0.50% 0.50% 0.50% 0.50% 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1-216-827-11 METAL CHIP 1-216-809-11 METAL CHIP
R301 R302 R303 R304 R305 R306 R307 R308 R309 R601 R602 R603 R604 R701 R702 R703 R704 R705 R706 R707 R708 R709 R710 R711 R712 R713 R714 R715 R717 R718 R719 R720 R721 R722 R723 R724 R726 R731 R732 R733 R734 R735 R736 R738 R739
1-218-887-11 1-216-849-11 1-216-833-11 1-216-835-11 1-216-837-11 1-216-793-11 1-216-825-11 1-216-851-11 1-218-899-11 1-216-837-11 1-216-809-11 1-216-829-11 1-216-823-11 1-216-823-11 1-216-855-11 1-216-853-11 1-218-911-11 1-218-911-11 1-218-911-11 1-218-915-11 1-218-903-11 1-218-895-11 1-216-853-11 1-216-853-11 1-216-853-11 1-216-841-11 1-216-803-11 1-216-827-11 1-216-821-11 1-216-821-11 1-216-809-11 1-218-871-11 1-218-839-11 1-218-855-11 1-218-851-11 1-218-875-11 1-216-821-11 1-216-833-11 1-216-847-11 1-218-895-11 1-218-851-11 1-218-871-11 1-218-867-11 1-218-895-11 1-218-911-11
RES,CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP RES,CHIP METAL CHIP METAL CHIP RES,CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP RES,CHIP RES,CHIP RES,CHIP RES,CHIP RES,CHIP RES,CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP RES,CHIP RES,CHIP RES,CHIP RES,CHIP RES,CHIP METAL CHIP METAL CHIP METAL CHIP RES,CHIP RES,CHIP RES,CHIP RES,CHIP RES,CHIP RES,CHIP
47K 220K 10K 15K 22K 4.7 2.2K 330K 150K 22K 100 4.7K 1.5K 1.5K 680K 470K 470K 470K 470K 680K 220K 100K 470K 470K 470K 47K 33 3.3K 1K 1K 100 10K 470 2.2K 1.5K 15K 1K 10K 150K 100K 1.5K 10K 6.8K 100K 470K
8-729-420-50 TRANSISTOR UN5215 < RESISTOR >
R101 R102 R103 R104 R105 R106 R107 R108 R109 R110 R111 R112 R112 R113 R150
1-216-849-11 1-216-839-11 1-216-811-11 1-216-831-11 1-216-823-11 1-216-825-11 1-216-837-11 1-216-789-11 1-216-821-11 1-216-837-11
METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP
220K 33K 150 6.8K 1.5K 2.2K 22K 2.2 1K 22K 3.3K 100 2.2K 470K 220
5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5%
1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W
1-216-827-11 METAL CHIP 1-216-809-11 METAL CHIP 1-216-825-11 METAL CHIP 1-216-853-11 METAL CHIP 1-216-813-11 METAL CHIP
1/16W 1/16W (AEP,UK,EE) 5% 1/16W (FR) 5% 1/16W 5% 1/16W (FR) 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W 1/16W
R201 R202 R203 R204 R205 R206 R207 R208 R209 R210
1-216-849-11 1-216-839-11 1-216-811-11 1-216-831-11 1-216-823-11 1-216-825-11 1-216-837-11 1-216-789-11 1-216-821-11 1-216-837-11
METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP METAL CHIP
220K 33K 150 6.8K 1.5K 2.2K 22K 2.2 1K 22K
< CONPOSITION CIRCUIT BLOCK > RB601 RB602 1-234-243-21 RES, NETWORK 220K (3216) 1-234-200-21 RES, NETWORK 100 (3216)
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WM-EX678 MAIN
Ref. No. Part No. Description < VARIABLE RESISTOR > RV301 RV601 1-225-684-21 RES, VAR, CARBON 30K/30K (VOL) 1-225-254-21 RES, ADJ, CARBON 2.2K (TAPE SPEED) ! < SWITCH > ! S701 S702 S703 S704 S705 S707 1-771-475-21 1-771-053-21 1-771-053-21 1-771-053-21 1-771-053-21 SWITCH, SLIDE (DIRECTION) SWITCH, KEY BOARD (p) SWITCH, KEY BOARD (9(REPEAT) SWITCH, KEY BOARD (FF) SWITCH, KEY BOARD (REW) Remarks Ref. No. Part No. Description ACCESSORIES *********** 1-418-021-11 1-528-252-21 1-528-543-22 1-528-744-23 1-759-700-21 3-008-521-01 3-029-488-01 3-864-887-11 3-864-887-21 REMOTE CONTROL UNIT (RM-WME21) BATTERY CHARGER (BC-7S)(UK) BATTERY, NI-CD (NC-6WM) BATTERY CHARGER (BC-7DY)(AEP,FR,EE) CASE, BATTERY Remarks
1-572-922-11 SWITCH, SLIDE (HOLD) < THERMISTOR >
CASE, BATTERY CHARGE POUCH, CARRYING MANUAL, INSTRUCTION (ENGLISH/FRENCH) MANUAL, INSTRUCTION (GERMAN/DUTCH) (AEP) 3-864-887-31 MANUAL, INSTRUCTION (SWEDISH/ITALIAN) (AEP) 3-864-887-41 MANUAL, INSTRUCTION (SPANISH/PORTUGUESE) (AEP) 3-864-887-51 MANUAL, INSTRUCTION (FINNISH/RUSSIAN) (AEP,EE) 3-864-887-61 MANUAL, INSTRUCTION (POLISH/CZECH) (EE) 8-953-272-90 HEADPHONE MDR-ED136SP//K SET
THP601 1-810-794-11 THERMISTOR, POSITIVE 3.3K < VIBRATOR > X701 1-579-258-11 VIBRATOR, CRYSTAL (32.768kHz) ************************************************************
MISCELLANEOUS ************** S901 1-762-553-11 SWITCH, LEAF HP901 1-500-576-11 HEAD, MAGNETIC (PLAYBACK) M901 1-763-166-11 MOTOR (CAPSTAN/REEL) (WITH PULLEY) PM901 1-454-674-32 SOLENOID, PLUNGER ************************************************************
The components identified by mark ! or dotted line with mark ! are critical for safety. Replace only with part number specified.
Sony Corporation
9-926-931-11
Personal A&V Products Company
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99A1651-1 Printed in Singapore © 1999.1 Published by Quality Engineering Dept. (Shibaura)