Aiwa D33 P4 LRN133A, D33 P2 LRN106A Service Manual

D33 English

SERVICE MANUAL

VIDEO MECHANISM

TYPE

P2 LRN106A

P4 LRN133A

S/M Code No. 09-99B-336-8N2

DATA

TABLE OF CONTENTS

REMOVING CASSETTE MANUALLY .............................		3
DECK MECHANISM PARTS LOCATIONS
Top View ............................................................................		4
Bottom View ......................................................................		4
DECK MECHANISM DISASSEMBLY
1.	Drum Assembly ...........................................................	5
2.	Plate Assembly Top .....................................................	7
3.	Holder Assembly CST .................................................	7
4.	Guide CST ..................................................................	7
5.	Bracket Side (L)/Bracket Assembly Door ....................	7
6. Arm Assembly F/L .......................................................		7
7.	Lever Assembly S/W ...................................................	7
8. Arm Assembly Cleaner ................................................		8
9.	Head F/E .....................................................................	8
10.	Base Assembly A/C Head ...........................................	8
11. Brake Assembly S .......................................................		9
12.	Brake Assembly T .......................................................	9
13. Arm Assembly Tension ................................................		9
14.	Reel S & Reel T ..........................................................	9
15.	Support CST .............................................................	10
16.	Base Assembly P4 ....................................................	10
17.	Opener Lid ................................................................	10
18. Arm Assembly T/up ...................................................		10
19. Arm Assembly Pinch .................................................		10
20.	Belt Capstan/Motor Capstan .....................................	11
21.Clutch Assembly D33 .................................................		11
22.	Lever F/R ..................................................................	11
23.	Gear Assembly H-Up/D or Gear Assembly Up/D ......	11
24.	Bracket Assembly Jog ...............................................	12
25.	Guide Rack F/L, Gear Rack F/L ................................	12
26.	Brake Assembly Capstan ..........................................	12
27.	Gear Drive/Gear Cam/Gear Connector ....................	13
28.	Bracket Assembly L/D motor .....................................	13
29.	Gear Sector ...............................................................	14
30.	Base Tension/Plate Slider/Lever Tension ..................	14
31.	Gear Assembly P3/Gear Assembly P2 .....................	15
32.	Base Assembly P3/Base Assembly P2 .....................	15
33. Arm Assembly Idler Jog or Arm assembly Idler .........		15

DECK MECHANISM ADJUSTMENT
Tools and Fixtures for service .........................................		16
1.	Mechanism Alignment Position Check ........................	17
2.	Preparation for Adjustment .........................................	18
3.	Checking Torque .........................................................	18
4.	Guide Roller Height Adjustment ..................................	19
4-1. Preliminary Adjustment ..........................................		19
4-2. Precise Adjustment ................................................		19
5. Audio/Control (A/C) Head Adjustment .........................		20
5-1. Preliminary Adjustment ..........................................		20
5-2. Confirm that the Tape Path smoothly between
	the Take-up Guide and Pinch Roller .....................	21
5-3. Precise Adjustment (Azimuth Adjustment) .............		21
6.	X-Value Adjustment .....................................................	21
7. Adjustment after Replacing Drum Assembly
	(Video Heads) .............................................................	22
8.	Check the Tape Travel after Reassembling
	Deck Mechanism.........................................................	22
8-1. Checking Audio and RF Locking Time
	during Playback and after CUE or REV ................	22
8-2. Check for Tape Curling or Jamming .......................		22
MAINTENANCE/INSPECTION PROCEDURE
1.	Check before starting Repairs ....................................	23
2.	Required Maintenance ................................................	24
3.	Scheduled Maintenance .............................................	24
4.	Supplies Required for Inspection and Maintenance ...	24
5.	Maintenance Procedure ..............................................	24
5-1. Cleaning .................................................................		24
5-2. Greasing ................................................................		25
MECHANISM TROUBLESHOOTING GUIDE
1.	Deck Mechanism ........................................................	26
2.	Front Loading Mechanism ..........................................	29
MECHANISM EXPLODED VIEW 1/3 .............................		32
MECHANISM MAIN PARTS LIST 1/3 ............................		33
MECHANISM EXPLODED VIEW 2/3 .............................		34
MECHANISM MAIN PARTS LIST 2/3 ............................		35
MECHANISM EXPLODED VIEW 3/3 .............................		36
MECHANISM MAIN PARTS LIST 3/3 ............................		37

2

REMOVING CASSETTE MANUALLY

1. Remove the loading motor.

3. Turn the capstan belt to take up slack tape.

Loading motor

Capstan belt

Fine rod, etc.

Fig. 1

Fig. 3

2.Turn the gear connect in the direction of the arrow with you finger to perform unsledding.

4.Turn the gear connect in the direction of the arrow with you finger to perform unloading.

Gear connect

Fig. 2

3

DECK MECHANISM PARTS LOCATIONS

• Top View

	Bracket Side 'L' 5	6 Bracket
		Assembly Door
	Plate Assembly 2
	Top
		7 Arm Assembly F/L
		Opener Door
	Lever Assembly 8
	S/W	4 Guide CST
		3 Holder Assembly CST
		9 Arm Assembly Cleaner
	Head F/E 10	34 Bracket Assembly
		L/D Motor
		11 Base Assembly
		A/C Head
		21 Arm Assembly Pinch
	Drum Assembly 1	19 Opener Lid
	Support CST 17	18 Base Assembly P4
	Base Assembly P2 42	41 Base Assembly P3
	Brake Spring S	20 Arm Assembly T/Up
	Brake Assembly S 12	43 Arm Assembly
	Arm Assembly 14	ldler Jog
	Tension	16 Reel T
	Band Assembly	13 Brake Assembly T
	Tension
	Reel S 15	Brake Spring T
	Lever
	Assembly S/W 8

Pracedure		Part	Fixing Type	Fig-
Starting
				ure
No.
	1	Drum Assembly	3 Screws , Cap FPC	A-1
	2	Plate Assembly Top	Two Hooks	A-2
2	3	Holder Assembly CST	Chassis Hole	A-2
	4	Guide CST	2 Hooks	A-2
2,3,4	5	Bracket Side (L)	1 Screw	A-2
2,3,4	6	Bracket Assembly Door	1 Screw	A-2
2,3,4,5,6	7	Arm Assembly F/L	Chassis Hole	A-2
2,3,4,5	8	Lever Assembly S/W	Chassis Hole	A-2
	9	Arm Assembly Cleaner	Chassis Embossing	A-3
	10	Head F/E	2 Hooks	A-3
	11	Base Assembly A/C Head	1 Screw	A-3
	12	Brake Assembly S	Chassis Hole	A-4
2,3	13	Brake Assembly T	Chassis Hole	A-4
2,3,12,	14	Arm Assembly Tension	Chassis Hole	A-4
2,3,12,14	15	Reel S	Chassis Shaft	A-4
2,3,13	16	Reel T	Chassis Shaft	A-4
	17	Support CST	Chassis Embossing	A-5
	18	Base Assembly P4	Chassis Embossing	A-5
	19	Opener Lid	Chassis Embossing	A-5
19	20	Arm Assembly T/Up	Chassis Embossing	A-5
19	21	Arm Assembly Pinch	Chassis Shaft	A-5

• Bottom View

	Motor Capstan 23	39 Gear Assembly P3
	Gear Connector 33	40 Gear Assembly P2
	Gear Cam 32
	Brake Assembly 30	36 Base Tension
	Capstan
		35 Gear Sector
	Belt Capstan 22
		38 Lever Tension
	Gear Drive 31
		37 Plate Slider
	Guide Rack F/L 28
	Gear Rack F/L 29	27 Bracket Assembly
		Jog
	Clutch Assembly D33 24
	Lever F/R 25	26 Gear Assembly H-Up/D

NOTE : When reassembly perform the procedure in the reverse order.

1)When reassembling, confirm Mechanism and Mode Switch Alignment Position (Pefer to Page 17)

2)When disassembling, the Parts for Starting No. Should be removed first.

Pracedure		Part	Fixing Type	Fig-
Starting
				ure
No.
	22	Belt Capstan		A-6
22	23	Motor Capstan	3 Screws	A-6
	24	ClutchAssembly D33	1 Washer	A-6
22,24	25	Lever F/R	1 Hook	A-6
22,24	26	GearAssembly H-Up/D	2 Washers	A-6
	27	BracketAssembly Jog	1 Screw	A-7
	28	Guide Rack F/L	1Screw	A-7
28	29	Gear Rack F/L		A-7
28, 29	30	BrakeAssembly Capstan	Chassis Shaft	A-7
28, 29	31	Gear Drive	1 Washer	A-8
28, 29, 30	32	Gear Cam	Chassis Shaft	A-8
28,29,30,31	33	Gear Connector	Chassis Shaft	A-8
	34	BracketAssembly L/D Motor	3 Hooks	A-8
	35	Gear Sector	3 Washers	A-9
	36	BaseTension	1 Screw	A-9
22,24,25,27	37	Plate Slider	Chassis Shaft	A-9
28,29,31,35
36
22,24,25,27
28,29,31,35	38	LeverTension	Chassis Hole	A-9
36
35	39	GearAssembly P3	2 Hooks	A-10
35, 39	40	GearAssembly P2	2 Hooks	A-10
35, 39, 40	41	BaseAssembly P3	Chassis Hole	A-10
35,39,40,41	42	BaseAssembly P2	Chassis Hole	A-10
1, 2	43	ArmAssembly Idler Jog	1 Hook	A-10

4

DECK MECHANISM DISASSEMBLY

(S2)
(S2)	Stator
	(S3)

Drum Motor

(S3)

Rotor

Drum Sub Assembly

(Fig. A-1-1)

Drum FPC

(S1)

	Optional Parts	(S1)	(S1)
Holder FPC or	Holder FPC	or Holder FPC
(only for 2HD Models)	(only for 4HD-Mono Models)	(only for 4HD-Hi-Fi Models)

(Fig. A-1-1)

H1

Cap FPC

Fig. A-1

1. Drum Assembly (Fig. A-1-1)

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.

3)Remove two Screws (S2) and Separate the Stator of Drum Motor.

4)Remove two Screws (S3) and Separate the Rotor of Drum Motor from the Drum Sub Assembly.

NOTE

(1)When reassembling Cap FPC, two Holes of Drum FPC are inserted to the two Bosses of Holder FPC correctly. (Refer to Fig. B-1)

(Fig. B-1)

Cap FPC

Drum FPC

Holder FPC

Figure in the opposite direction

5

DECK MECHANISM DISASSEMBLY

H1
		Plate Assembly Top	H2
	(A)
			(B)
		(Fig. A-2-1)
		Lever Stopper (L)	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	(S2)
	(H5)	(Fig. A-2-7)
Bracket Side (L)	(S1)
(Fig. A-2-4)
		Groove
		Gear Rack F/L Groove
		Guide CST	(Fig. A-2-5)
		(Fig. A-2-3)	Bracket
			Assembly Door
H3
		Fig. A-2	H4
		6

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.

3. Holder Assembly CST (Fig.A-2-2)

1)Push the Lever Stopper(L),(R) in the direction of the arrows (A), (B), and move the Holder Assembly CST.

	Plate Assembly Top
Bracket Side (L)	Bracket Assembly Door

2)Push the Bracket Assembly Door to the right and lift up the Holder Assembly CST along the Guide Groove of the Bracket Assembly Door.

	Lever Stopper (L)	Lever Stopper (R)
	Holder Assembly CST
(A)		(B)

4. Guide CST (Fig.A-2-3)

1)Push two Hooks(H3),(H4) in the direction of the arrow and separate the left side.

2)Unhook (H5),(H6) as above No.1) and disassemble the Guide CST in the direction of the arrow.

	(H4)
(H3)
Bracket Side (L)	Bracket Assembly Door
5. Bracket Side(L) (Fig. A-2-4)/
Bracket Assembly Door (Fig.A-2-5)

1)Remove the Screw (S1) and disassemble the Bracket Side(L) in the front.

2)Remove the Screw (S2) and disassemble the Bracket Assembly Door in the front.

6. Arm Assembly F/L (Fig. A-2-6)

1) Push the Arm Assembly F/L to the left and lift up it.

NOTE

(1)When reassembling, confirm that the Gear(A) of the Arm F/L and the Gear(B) of the Gear Rack F/L are assembled as below.

7. Lever Assembly S/W (Fig. A-2-7)

Gear (A)

Gear (B)

1)Hook the Spring Lever S/W on (H5).

2)Lift up the left side of the Lever S/W from the Groove(A) of the Chassis.

Spring

Lever S/W

(H5)

(H5)

NOTE

(1)Place the Spring Lever S/W of the above (No.1) as original position.

Spring

Lever S/W

(H5)

(H5)

7

DECK MECHANISM DISASSEMBLY

		Arm Assembly
		Cleaner
		(A)
		(Fig. A-3-1)
		(S1)
		Base Assembly A/C Head
	(Fig. A-3-2)	(Fig. A-3-3)
(H1)
Head F/E
		Fig. A-3
8. Arm Assembly Cleaner(Fig. A-3-1)		9. Head F/E (Fig. A-3-2)

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)Unhook the two Hooks (H1) on the back side of the Chassis and lift up the Head F/E.

10. Base Assembly A/C Head (Fig. A-3-3)

1)Remove the Screw (S1) and lift up the Base Assembly A/C Head.

8

DECK MECHANISM DISASSEMBLY

Spring S Brake

Brake Assembly S

(Fig. A-4-1)

(A)

Arm Assembly

Tension

Spring Tension

(C)

Reel T

(Fig. A-4-5)

Band

(Fig. A-4-3) Assembly Spring T Brake

Tension

Reel S

B

Brake Assembly T

(Fig. A-4-2)

(Fig. A-4-4)

Fig. A-4

11. Brake Assembly S (Fig. A-4-1)

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.

NOTE

(1)When reassembling, be careful not to change the Spring with below No.12.(Refer to Fig. B-2).

12. Brake Assembly T (Fig. A-4-2)

1)Remove the Spring T Brake.

2)Hold the (B) part shown above Fig. A-4-2 and turn to the counterclockwise direction, and then lift up the Brake Assembly T.

NOTE

(1) When reassembling, be careful not to change the Spring with above No.11.(Refer to Fig. B-2).

(Difference for Springs)

(Fig. B-2)

Spring T Brake Color (Black)

Spring S Brake

Spring Tension

13. Arm Assembly Tension (Fig. A-4-3)

1)Remove the Spring Tension.

2)Hold the (C) part shown above Fig. A-4-3 and turn to the clockwise direction, and then lift up the Arm Assembly Tension.

NOTE

(1)When reassembling, be careful not to change the Spring with above No.11,12.(Refer to Fig. B-2).

14. Reel S (Fig. A-4-4) & Reel T (Fig. A-4-5)

1)Lift up the Reel S and Reel T.

NOTE

(1)When reassembling, be careful not to change the Reel S and Reel T each other.

Three Holes

Reel S

Reel T

(2) Confirm two Slide Washers under the Reel S and Reel T.

9

DECK MECHANISM DISASSEMBLY

		(D)
			Opener Lid
			(Fig. A-5-3)
		(C)
		Spring
		Arm T/Up
	Arm Assembly T/up
	(Fig. A-5-4)
			Arm
			Assembly
	Base Assembly P4		Pinch
			(Fig. A-5-5)
	Support CST
	(Fig. A-5-1)	(B)
	(A)
		(Fig. A-5-2)
		Fig. A-5

15. Support CST (Fig. A-5-1)

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.

16. Base Assembly P4 (Fig. A-5-2)

1)Break away the (B) part shown above Fig. A-5-2 from the Embossing of the Chassis in the counterclockwise direction and lift up the Base Assembly P4.

17. Opener Lid (Fig. A-5-3)

1)Hook the Spring Arm T/up on the Split digged under the Arm Assembly T/up.(Refer to Fig.A-5-4(D)).

2)Break away the (C) Part of the Opener Lid from the Embossing of the Chassis in the Clockwise direction and lift up the Opener Lid.

18. Arm Assembly T/up (Fig. A-5-4)

1)Confirm that the Spring Arm T/up is placed as above (No.17.1).

2) Lift up the Arm Assembly T/up.

NOTE

(1)When reassembling, unhook the Spring Arm T/up Shown above (No.17.1) to the original position.

Opener Lid

Spring Arm T/up

Arm Assembly T/up

19. Arm Assembly Pinch (Fig. A-5-5)

1) Lift up the Arm Assembly Pinch.

10

DECK MECHANISM DISASSEMBLY

(Fig. A-6-1)		Belt Capstan
	(B)	Motor Capstan
(A)
		Washer(W1)
		Clutch Assembly D33
(Fig. A-6-2)		(Fig. A-6-3)
		Washer(W2)	Optional Parts
Lever F/R		Gear Assembly H-Up/D		or	Gear Assembly Up/D
(Fig. A-6-4)		(For Hi-Rewind Models)			(For Normal Models)
Hook(H1)		Spring Up/D
	(C)	Slide Washer
					(Fig. A-6-5)
		(B')
	(A')
		(S1)
		Fig. A-6

20. Belt Capstan (Fig. A-6-1)/

Motor Capstan (Fig. A-6-2)

1)Remove the Belt Capstan.

2)Remove three Screws(S1) on the back side of the Chassis and lift up the Motor Capstan.

NOTE

(1)When reassembling, Confirm the (A), (B) parts of Motor Capstan is located to the (A'), (B') of the Chassis.

21. Clutch Assembly D33 (Fig. A-6-3)

1)Remove the Washer(W1) and lift up the Clutch Assembly D33.

NOTE

(1)When reassembling, move the (C) part of the Lever F/R up and down, then confirm if it is returned to original position.

23. Gear Assembly H-Up/D or Gear Assembly Up/D (Fig. A-6-5)

1)Remove the Washer(W2) and lift up the Gear Assembly H-up/D.

2)Remove the Spring Up/D.

3)Remove the Slide Washer.

NOTE

22. Lever F/R (Fig. A-6-4)

1)Unhook the (H1) shown above Fig. A-6-4 and lift up the Lever F/R.

(1)Gear Assembly H-Up/D is for Hi-Rewind Models.

(2)Gear Assembly Up/D is for Normal Models except Hi-Rewind Models.

11

DECK MECHANISM DISASSEMBLY

	Brake
	Capstan
Hole (A)+(B)
		Brake
	(H2)	Assembly Capstan
Gear Cam
		Spring Capstan
Guide		(Fig. A-7-4)
(S2)	(H1)	(S1)	Bracket Assembly Jog
(Fig. A-7-2)			(Fig. A-7-1)
	Gear Cam

(Fig. A-7-3)

Fig. A-7

24. Bracket Assembly Jog (Fig. A-7-1)

1)Remove the Screw(S1) and lift up the Bracket Assembly Jog.

25. Guide Rack F/L (Fig. A-7-2)/ Gear Rack F/L (Fig. A-7-3)

1)Remove the Screw(S2) and lift up the Guide Rack F/L.

2)Lift up the Gear Rack F/L.

26. Brake Assembly Capstan (Fig. A-7-4)

1)Hook the Spring Capstan on the Hook(H1).

2)Unhook the Hook(H2) and lift up the Brake Assembly Capstan.(Refer to Fig. to the right)

Hook(H2)

Hook(H2)

NOTE

(1)When reassembling, confirm that the Hole(A) of the Brake Assembly Capstan is aligned to the Hole(B) of the Gear Cam.

(Refer to above Fig. A-7-4).

12