akira MC-6320V User manual

VCD MICRO SYSTEM
Service Manual

2
Model No.: MC-6320V
Version: 1.0
MODEL:
MC-6320V

3
Model No.: MC-6320V
Version: 1.0
CONTENTS
SPECIFICATIONS................................................................................................................................... 4
ALIGNMENT INSTRUCTIONS............................................................................................................. 5
CIRCUIT DIAGRAM .............................................................................................................................. 5
EXPLODED VIEW.................................................................................................................................. 5
PART LIST............................................................................................................................................... 5

4
Model No.: MC-6320V
Version: 1.0
SPECIFICATIONS
 Support VCD, CD, CD-RW
 Top loading CD player with Programmable track memories for up to 19 tracks
 Single cassette system (Auto stop system)
 2 bands (AM /MW /SW) radio, analogue tuning
 Automatic level control (ALD) for recording
 Built-In condenser Mic
 X-bass On /Off
 Full function remote control
 573(W) x 315(D) x 535(H)mm

5
Model No.: MC-6320V
Version: 1.0
ALIGNMENT INSTRUCTIONS
TEST EQUIPMENT
1. AM signal generator with test loop.
2. FM signal generator.
3. AM/FM-IF signal generator with 455 KHz and 10.7 MHz marker.
4. Oscilloscope with a wide band amplifier of approximately 100 KHz.
5. V.T.V.M ( Vacuum-tube voltmeter ).
6. Power supply.
AM ALIGNMENT
1. Turn on AM signal generator, IF generator, VTVM, oscilloscope and power supply.
2. Using the test loop across the output of MW signal generator, the radio will receive the generator
signal by induction.
3. Connect the VTVM, oscilloscope and 4 ohm dummy load to the Speaker terminal.
4. Set the Band Switch to AM position in sequence.
5. Set the Volume Control to max. Position.
6. Set signal generator frequency as listed in AM Alignment Chart and maintain a sufficient output
level to provide an obvious indication.
7. Proceed as listed in Alignment Chart.
FM-IF ALIGNMENT
1. Set the Selector Switch to FM position.
2. Connect a capacitor 0.1Uf between the PIN1 of IC 1 and the "+VE" output of FM-IF signal
generator. The "-VE" pole of FM-IF signal generator connect to GND.
3. Connect a capacitor 0.1UF between the PIN17 of IC 1 and the "+VE" input of signal generator.
The "-VE" pole of FM-IF generator connect to GND.
FM-RF ALIGNMENT
1. Turn on FM signal generator, VTVM, oscilloscope and power supply.
2. Input the signal to FM ANT.
3. Connect the VTVM, oscilloscope and 4 ohm dummy load to the Speaker terminal.
4. Set the Volume Control to max. Position.
5. Set the Signal Frequency as listed in FM Alignment Chart and maintain a sufficient output level
to provide an obvious reading.

6
Model No.: MC-6320V
Version: 1.0
ALIGNMENT CHART
Band Step
Signal
Generator
Frequency
Radio Dial
Setting Adjustment Remark
IF 1 455KHz T8
Adjust for best IF
wave
Form(at detector
output)
1 525KHz
Tuning Gang max.
capacity T5 Adjust for max.
Indication
2 1650KHz
Tuning Gang min.
capacity Trimmer of pvc Adjust for max.
Indication
3 " repeat steps 1 and 2 as required "
4 600KHz Tune to signal
(600KHz) AM ANT COIL Adjust for max.
Indication
5 1400KHz Tune to signal
(1400KHz) Trimmer of pvc Adjust for max.
Indication
AM
6 " repeat steps 4 and 5 as required "
FM-IF 1 10.7MHz T7
Adjust for best IF
wave Form & S
curve
2 87.35MHz
Tuning Gang max.
capacity L3 Adjust for max.
Indication
3 108.3MHz
Tuning gang min.
capacity Trimmer of pvc Adjust for max.
Indication
4 " repeat steps 2 and 3 as required "
5 90MHz Tune to signal
(90MHz) L2 Adjust for max.
Indication
6 106MHz Tune to signal
(106MHz) Trimmer of pvc Adjust for max.
Indication
FM-RF
7 " repeat steps 5 and 6 as required "

7
Model No.: MC-6320V
Version: 1.0
OPTIONAL BAND
Band Step
Signal
Generator
Frequency
Radio Dial
Setting Adjustment Remark
1 150KHz Tuning Gang max.
capacity T6 Adjust for max.
Indication
2 270KHz Tuning Gang min.
capacity CT3 Adjust for max.
Indication
3 " repeat steps 1 and 2 as required "
4 170KHz Tune to signal
(170KHz)
LW ANT
COIL
Adjust for max.
Indication
5 250KHz Tune to signal
(250KHz) CT1 Adjust for max.
Indication
LW
6 " repeat steps 4 and 5 as required "
1 3.1MHz Tuning Gang max.
capacity T6 Adjust for max.
Indication
2 12.25MHz Tuning gang min.
capacity CT3 Adjust for max.
Indication
3 " repeat steps 2 and 3 as required "
SW
4 3.5MHz Tune to signal
(3.5MHz) T1 Adjust for max.
Indication

8
Model No.: MC-6320V
Version: 1.0
CASSETTE SECTION
MOTOR SPEED
 Insert 3KHz TEST TAPE to deck compartment and adjust VR of motor to obtain the closing
frequency of 3KHz which is displayed on the frequency counter.
R/P HEAD AZIMUTH
 Set the function selection switch to TAPE position.
 Tune the volume control to max. output position.
 Insert 6.3KHz TEST TAPE into deck compartment. ( TECT MTT-113N )
 Adjust the playback head mounting screw to obtain the max. output of frequency 6.3KHz.
Reading at VTVM.
CD/VCD SECTION
 Connect the VTVM and oscilloscope to the speaker output of the unit.
 Put the test disk TCD-781 into the CD compartment.
 Set the function selection switch to CD position.
 Playback track 1 and set volume position to obtain 1V ( 0 dB ) output from the speaker terminal.
Playback track 6 and track 18 to read the output level which must within specification – 6dB.

9
Model No.: MC-6320V
Version: 1.0
CIRCUIT DIAGRAM

10
Model No.: MC-6320V
Version: 1.0
EXPLODED VIEW

11
Model No.: MC-6320V
Version: 1.0
PART LIST
NO PART NAME QTY
1 SPK logo 2
2 SPK mesh bracket 2
3 SPK cover 2
4 SPK panel 2
5 SPK clip 8
6 Speaker (4’) 2
7 Screw (TWS 3x10) 8
8 Speaker (1.5”) 2
9 Screw (TWS 3x8) 4
10 SPK box back cabinet 2
11 Screw (TPS) 3x25 8
12 Screw (2.6x5) 12
13 Cassette lens (L) 1
14 Cass door lens plate 1
15 Cassette lens (S) 1
16 Cass door spring 1
17 Cassette door 1
18 Front cabinet 1
19 Power knob 1
20 Power SW 1
21 Screw (TPS 3x10) 32
22 Volume knob 1
23 Damping gear 1
24 Bass HNOB 1
25 Volume PCB assy 1
26 Screw (TWS 3x10) 3
27 Cassette key 1 set
28 Cass key clip 1
29 Cass deck 1
30 Dial bracket 1
31 TS28EQ bkt 1
32 Dial bracket 1
33 Tuning bracket 1
34 Dial drum 1

12
Model No.: MC-6320V
Version: 1.0
NO PART NAME QTY
35 Bar holder 1
36 Rectify PCB 1
37 Transition SW 1
38 Screw (TWS 3x22) 2
39 Transformer 1
40 AC jack 1
41 Rear cabinet 1
42 Screw (MFS 3x8) 6
43 Blind plate 3
44 Screw (TPS 3x35) 4
45 Small battery door 1
46 CD cover lens 1
47 CD cover 1
48 CD steel cover 1
49 Magnet 1
50 Lock ring 1
51 Disk cover 1
52 Screw (MPS 2x7) 1
53 CD damping gear 1
54 Mute led PCB 1
55 CD door spring 1
56 CD door lock 1
57 600 plate 6
58 VCD output PCB assy 1
59 Phone PCB bkt 2
60 CD dust cover 1
61 CD deck 1
62 CD rubber 4
63 Screw (PWB 2x16) 4
64 CD (VCD) PCB 1
65 E-ring 1
66 Dial pully 1
67 Tuning shaft 1
68 Slide knob (R) 1
69 Slide knob (L) 1
70 Control PCB 1

13
Model No.: MC-6320V
Version: 1.0
NO PART NAME QTY
71 Sensor PCB 1
72 Function knob 1 set
73 Tuning knob 1
74 Display lens plate 1
75 Display lens 1
76 Control lens plate 1
77 Control lens 1
78 VCD output PVC plate 1