Table of Contents
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TABLE OF CONTENTS
1 Safety Precautions----------------------------------------------- 5
1.1. For Service Technicians --------------------------------- 5
1.2. Insulation Resistance Test ------------------------------ 5
1.3. Power Caution --------------------------------------------- 5
2 Warning-------------------------------------------------------------- 6
2.1. Battery Caution -------------------------------------------- 6
2.2. About Lead Free Solder (PbF: Pb free)-------------- 6
2.2.1. Suggested Pbf Solder ------------------------------- 6
2.3. Discarding of P.C. Board -------------------------------- 6
2.4. Note For Repairing---------------------------------------- 7
3 Specifications ----------------------------------------------------- 8
3.1. Main monitor station (VL-MWD272) ------------------ 8
3.2. Sub monitor station (VL-WD613)---------------------- 8
3.3. Door phone (VL-V522L) --------------------------------- 8
3.4. Charger ------------------------------------------------------ 9
4 Technical Descriptions ----------------------------------------10
4.1. Block Diagram---------------------------------------------10
4.2. IC Operation -----------------------------------------------12
4.2.1. Monitor Station Section-----------------------------12
4.2.2. Door Station Section --------------------------------15
4.2.3. Wireless Monitor Station Section ----------------17
5 Location of Controls and Components ------------------19
6 Installation Instructions ---------------------------------------19
7 Operating Instructions ----------------------------------------19
8 Service Mode -----------------------------------------------------20
8.1. Things to do after replacing IC ------------------------20
8.1.1. Main Monitor Station --------------------------------20
8.1.2. Wireless Monitor Station ---------------------------21
9 Troubleshooting Guide----------------------------------------22
9.1. Operation Check of the Door Station ----------------22
Monitor -------------------------------------------------27
Recording----------------------------------------------28
Supply --------------------------------------------------29
Communication---------------------------------------33
Transmission------------------------------------------35
Reception ----------------------------------------------36
Recording----------------------------------------------37
Station --------------------------------------------------39
Station -------------------------------------------------------40
Power Supply -----------------------------------------41
LCD -----------------------------------------------------42
VL-SWD272BX/SWD272CX/SWD272CX1/SWD272AZ/VL-WD613CX/VL-WD613CX1
PAGE
Radio Communication ----------------------------- 43
Transmission ----------------------------------------- 45
Reception --------------------------------------------- 46
Charging----------------------------------------------- 47
9.3.7. Before Using------------------------------------------ 48
station/wireless monitor station) ----------------- 48
9.4. Error Messages ------------------------------------------ 48
9.5. Signal Route ---------------------------------------------- 49
10 Disassembly and Assembly Instructions--------------- 55
10.1. Main Monitor Station ------------------------------------ 55
10.1.1. How to Remove the AC Cord [No.1] ---------- 55
and LCD [No.3] ------------------------------------- 56
10.2. Door Station ----------------------------------------------- 57
Camera Unit [No.2] --------------------------------- 58
Speaker [No.3] --------------------------------------- 59
10.2.4. How to Remove the Front Panel [No.4] ------- 61
10.2.5. Installation of the lead wires ---------------------- 62
10.3. Wireless Monitor Station ------------------------------- 63
[No.2] --------------------------------------------------- 66
10.3.3. How to Remove the Speaker [No.3]------------ 69
10.3.5. Charger Unit ------------------------------------------ 70
11 Measurements and Adjustments -------------------------- 71
11.1. Main Monitor Station ------------------------------------ 71
11.1.1. Main Board-------------------------------------------- 71
11.1.2. Factory Mode----------------------------------------- 73
11.2. Door Station ----------------------------------------------- 76
11.3. Wireless Monitor Station ------------------------------- 77
11.3.1. Connections ------------------------------------------ 77
11.3.2. When replacing BBIC and X'tal------------------ 78
monitor station) -------------------------------------- 79
12 Miscellaneous---------------------------------------------------- 81
12.1. How to Replace the Flat Package IC --------------- 81
12.1.1. Preparation ------------------------------------------- 81
12.1.2. Flat Package IC Removal Procedure ---------- 81
12.1.4. Bridge Modification Procedure------------------- 81
13 Schematic Diagram -------------------------------------------- 82
13.1. Main Monitor Station ------------------------------------ 82
13.1.1. Main Board (1) / External I/F --------------------- 82
13.1.2. Main Board (2) / BBIC------------------------------ 83
13.1.3. Main Board (3) / DPJP3_KEY ------------------- 84
13.1.4. Main Board (4) / LCD------------------------------- 85
3
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