Sharp ViewCam VL-NZ100U, Service Manual

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24
VL-NZ50U/NZ100U
VL-NZ150U
10. ADJUSTING THE ELECTRICAL CIRCUITS
Before starting the electric circuit adjustment
•
The adjustment methods described herein are used, in most cases, when the expendable mechanical parts, including
the video head, have been replaced, at which time the electrical circuits need to be readjusted. Before adjusting the
electrical circuits, make sure that the mechanism works properly (i.e., the mechanism is properly adjusted). Incase of
the occurrence of any problem to the electrical circuits, be sure to use the specified measuring instruments to locate
the area to which the problem is occurring, and then take the necessary action, including repair, replacement or
adjustment, exactly as instructed in the electrical adjustment methods that will follow.
Do not attempt to make adjustments without using the proper measuring instruments.
•
This machine is configured so that the electrical circuits inside its PWB unit are composed, for the most part, of high-
density, small surface-mounted component parts for downsized machine body.
To perform repair service or parts replacement, do so using a soldering iron, but in as short a time as possible; this is
because surface-mounted component parts are generally so small in size and susceptible to heat, as compared with
the large discrete parts used in TV sets, desk-top video decks, etc., that attempting to heat their electrodes for a longer
time than is necessary with a soldering iron may result in their becoming defective.
This applies particularly when replacing the laminated chip capacitors.
For this purpose, ceramic soldering irons with a temperature regulator are recommended (iron tip temperature 250
°
C
and soldering time 5 seconds or shorter).
VL-NZ50U/NZ100U/NZ150U
Specifications of service jigs
No. Connection section Connector REF. No. No. of pins
New or
Part cord
Price
Continuation code
1 H/A_PWB–H/A_FPC P306– 80B-B QCNW-1832TAZZ BV
2 H/A_FPC–Main –SC3301 80B-B CPWBH2876TA01 Product unit use AS
3 Main–Battery Terminal SC900
←
20B-B QTANZ0152TAZZ Product unit use AN
4 Main–LCD Panel SC2801–LCD Panel 24 QCNW-1382TAZZ or BD
QCNW-1274TAZZ AZ
5 Main–Inverter PWB SC2802–SC9801 9 N QPWBHB196WJZZ AD
6 Inverter–Lamp Unit SC9802–LAMP 4 Direct connection : High tension caution —
7 Main–Operation PWB SC701–SC2001 6 QPWBHB197WJZZ Product unit use AD
8 Main–AIO PWB SC1202–SC2604 33 CPWBHB195WJ01(NZ100U/NZ150U) AU
CPWBHB247WJ01(NZ50U) Product unit use AR
9 Main–Card PWB SC1204–SC1502 27 CPWBHB195WJ01(NZ100U/NZ150U) AU
CPWBHB247WJ01(NZ50U) Product unit use AR
10 Main–Cam Head SC1201–SC53 33 CPWBHB195WJ01(NZ100U/NZ150U) AU
CPWBHB247WJ01(NZ50U) Product unit use AR
12 Power/Snap SW–Mic Unit SC2701
←
4 RMiCC0108TAZZ Product unit use AP
13 AIO–Power/Snap SW Unit SC2601
←
10 QSW-ZA004WJZZ Product unit use AW
14 AIO–Zoom Ope SW Unit SC2602
←
11 QSW-ZA003WJZZ Product unit use AY
15 AIO–Speaker P601
←
2 VSP0020P-918N Product unit use AL
16 Cam Head–Lens SC551
←
24 Direct connection —
17 Cam Head–CCD PWB SC101–SC21 33 QPWBHB194WJZZ Product unit use AD
18 Cam Head–Turn SW Unit P51
←
2 QSW-Z0376TAZZ Product unit use AF
19 Cam Head–Main P52–P1203 12 QCNW-2060TAZZ Product unit use AD
20 TP Jig for Envelope SC3302
←
10PB-B RUNTKA003WJZZ BF
confirmation
21 Main–DC Terminal_PWB P901–P2900 6 QCNW-A392WJZZ AE