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NC3600 P4LRH English
SERVICE MANUAL
VIDEO MECHANISM
TA
DA
S/M Code No. 09-995-333-1N1
VCR TEST TAPE INTERCHANGEABILITY TABLE
There are two types of the new allgnment tape CH-1B (for NTSC) and CH-2 (for PAL). On each tape four signals (1)-(4)
are recorded for the times and in the order shown below.
(1) : 8min. fi (2) : 2min. fi (3) : 5min. fi (4) : 5min.
The TTV-MP1 (for M-PAL), TTV-MS1 (for MESECAM) and TTV-S1 (for SECAM) allgnment tapes have the same
contents as the previous tapes.
Now in use TYPE New TYPE
Method Application
Model Contents *1 Model Contents *1
NTSC, Color bar, NTSC, Stairsteps, PB-Y Level/General electrical ADJ.
TTV-N1 CH-1B(2)
1kHz, SP 1kHz, SP Head ACE Height/Tilt ADJ.
NTSC, Color bar,
TTV-NS1 No Changed. For S-VHS (SQPB) check
1kHz, SP
NTSC, Color bar, CH-1B(4) NTSC, Color bar,
TTV-N1E Switching position ADJ.
1kHz, EP *2 1kHz, EP
NTSC, Color bar,
TTV-NS6E No Changed. For S-VHS (SQPB) check
No sound, EP
NTSC
NTSC, Stairsteps, NTSC, Stairsteps,
TTV-N2 CH-1B(1) Head ACE Azimuth ADJ.
7kHz, SP 7kHz, SP
TTV-N12 NTSC, Color bar, NTSC, Color bar, FM Envelope ADJ.
CH-1B(4)
(SCV-1998) 1kHz, SP 1kHz, EP X-Value ADJ.
TTV-N6 NTSC, Mono scope,
No Changed. For total picture quality check (resolution, etc)
(TTV-N06T) 7kHz, SP
NTSC, Stairsteps, NTSC, Color bar,
TTV-N7A CH-1B(3) No sound SP, HiFi Audio PB Level ADJ.
1kHz, SP, HiFi 400Hz HiFi 400Hz
Switching position ADJ.
PAL, Color bar, CH-2(2) PAL, Stairsteps,
TTV-P1 PB-Y Level/General electrical ADJ.
1kHz, SP *3 1kHz, SP
Head ACE Height/Tilt ADJ.
Switching position. (LP Model)
PAL, Color bar, PAL, Color bar,
TTV-P1L CH-2(4) FM Envelope ADJ. (LP Model)
1kHz, LP 1kHz, LP
X-Value ADJ. (LP Model)
PAL
HEAD ACE Azimuth ADJ.
PAL, Stairsteps, PAL, Stairsteps,
TTV-P2 CH-2(1) FM Envelope ADJ. (SP Model)
6kHz, SP 6kHz, SP
X-Value ADJ. (SP Model)
TTV-P6 PAL, Monoscope,
No Changed. For total picture quality check (resolution, etc)
(TTV-N06T) 6kHz, SP
PAL, Stairsteps, PAL, Color bar,
TTV-P7 1kHz, SP, CH-2(3) No sound HiFi Audio PB Level ADJ.
HiFi 1kHz SP, HiFi400Hz
PAL, Color bar,
TTV-P16 400Hz, No Changed. FM Filter ADJ.
SP, HiFi 1kHz
* 1. Described in the order of color format. video signal. linear audio. tape speed and Hi-Fi audio.
* 2. Use CH-1B (1)-(3) with models used exclusively in the SP mode.
* 3. Use CH-2 (3) and (4) when it is necessary to observe the chroma signal.
2
2. MECHANICAL ADJUSTMENT
2-1. LOCATION OF MECHANISM PARTS
Head cleaner
ACE head
Drum brush No. 8 guide cap
Pinch roller
Cylinder
Loading motor
assembly
FE head
S slider
T slider
Tension lever No. 9 guide lever
FL cam gear
S brake
Band brake T brake
T real table
S reel table FL drive slider
FL arm lever
Center gear
Idle lever assembly assembly
Fig-2-1-1 Upper side
Top bracket
Cassette holder
assembly
FL cassette Door open lever
guide assembly
Fig-2-1-2 Upper side
3
Capstan motor
T loading lever
assembly
Worm gear holder
S loading lever
Worm wheel assembly
Reel belt
Loading drive gear
Joint gear 1
Joint gear 2 Tension drive lever
Cam slider
Up/down lever
S-VHS switch Holder clutch
assembly
Pinch drive lever
Fig-2-1-3 Rear side
2-2. SERVICE TOOL LIST
Torque cassette Post height adjustment screwdriver
Alignment tape
(SRK-VHT-103-404) (SV-TG0-030-000)
4
2-3. ALIGNMENT TAPES FOR ADJUSTMENT
Mechanism PAL
Adjustment item SP/LP 2/4 head
FM envelope TTV-P2L
Slant Commercially available tape
A/C head Height TTV-P1 (TTV-P1L)
Azimuth TTV-P2
X value TTV-P2 (TTV-P2L)
RG post slant Commercially available tape
Tape back-tension SRK-VHT-103
2-4. GUIDELINE OF MAJOR PARTS REPLACEMENT